E4 Flashcards
Olfactory glands _______
A) house the sense of smell.
B) regenerate to form new olfactory epithelium.
C) react to aromatic molecules.
D) coat the olfactory epithelium with a pigmented mucus.
E) group as olfactory bulbs.
coat the olfactory epithelium with a pigmented mucus
Olfactory information is first received by which part of the brain?
A) pons
B) cerebellum
C) thalamus
D) cerebrum
E) medulla oblongata
cerebrum
Before an olfactory receptor can detect an odorant, it has to _________
A) contact a basal cell.
B) bind to receptors on olfactory dendrites.
C) open ion channels.
D) respond to applied pressure.
E) be transported to the olfactory bulbs.
bind to receptors on olfactory dendrites
Which of the following is TRUE of olfactory discrimination?
A) There are 6 primary smells known.
B) The number of olfactory receptors decline as we age.
C) All odorants require the same concentration to activate an olfactory receptor.
D) There are different types of olfactory receptor cells to detect each type of odorant.
E) The olfactory receptor population does not divide.
The number of olfactory receptors decline as we age
All of the following are true of olfactory pathways except which one?
A) They project first to the occipital lobes and then to the thalamus.
B) Neurons from the olfactory epithelium synapse in the olfactory bulb.
C) Information flows to the olfactory cortex, hypothalamus, and limbic system.
D) They reach the forebrain without first synapsing in the thalamus.
E) The limbic system-olfactory pathway connection means that there are close ties between experiences and memories with smell.
They project first to the occipital lobes and then to the thalamus
Some neural tissues retain stem cells and thus the capacity to divide and replace lost neurons. Which of these special senses can replace its damaged neural receptors?
A) olfaction
B) hearing
C) equilibrium
D) proprioception
E) vision
olfaction
A normal, relaxed inhalation carries about ________ of the inhaled air to the olfactory organs.
A) 50 percent
B) 8 percent
C) 2 percent
D) 35 percent
E) 10 percent
2 percent
Olfactory receptors send axons through the cribriform plate. They synapse on neurons in the
A) medulla oblongata.
B) medial geniculate.
C) cerebral cortex.
D) olfactory bulb.
E) olfactory tract.
olfactory bulb
Olfactory organs are located in the nasal cavity inferior to the perforated bony structure known as the
A) cribriform plate.
B) sphenoid bone.
C) sella turcica.
D) vomer.
E) zygomatic process.
cribriform plate
The olfactory organ consists of the ________ and the lamina propria.
A) gustatory cells
B) basilar membrane
C) olfactory epithelium
D) hippocampus
E) ethmoid bone
olfactory epithelium
The olfactory receptors are highly modified
A) epithelial cells.
B) interneurons.
C) sensory neurons.
D) motor neurons.
E) neuroglial cells.
sensory neurons
Which of the following types of sensory information reaches the cerebral cortex directly?
A) visual
B) hearing
C) equilibrium
D) olfactory
E) gustatory
olfactory
When odorant molecules contact the dendritic processes of olfactory receptors the initial response is
A) an action potential.
B) activation of a kinase.
C) a generator potential.
D) a hyperpolarization potential.
E) a conversion of 11-trans retinal to 11-cis retinal.
a generator potential
During a sinus infection it is difficult to smell because
A) basal cell division decreases.
B) olfactory glands stop producing mucus.
C) olfactory supporting cells block odorant molecules from reaching the receptors.
D) the hypothalamus stops responding to olfactory stimulation.
E) excess mucus blocks odorant molecules from reaching the receptors.
excess mucus blocks odorant molecules from reaching the receptors
Damage to the insula is most likely to affect which of the following senses?
A) olfaction
B) gustation
C) vision
D) hearing
E) equilibrium
gustation
Our taste buds are most receptive to which of the following types of compounds?
A) sweet
B) salty
C) sweet and salty
D) bitter
E) umami
bitter
As we age
A) taste bud sensitivity increases.
B) taste bud sensitivity doubles.
C) the number of taste buds increases.
D) the number of taste buds decreases.
E) the number of taste buds decreases but the number of olfactory receptors increases to compensate.
the number of taste buds decreases
Which of the following correctly states how a gustatory receptor will be stimulated by an acidic or sour compound?
A) G proteins will be activated.
B) Hydrogen ions will diffuse into the receptor cell causing depolarization.
C) Sodium ions will diffuse into the receptor cell causing depolarization.
D) Second messengers will be activated.
E) Adenylate cyclase will be activated.
Sodium ions will diffuse into the receptor cell causing depolarization
The function of gustatory receptors parallels that of
A) photoreceptors in the eye.
B) mechanoreceptors in the ear.
C) olfactory receptors.
D) lamellar corpuscles.
E) proprioceptors.
olfactory receptors
Which of the following lingual papillae has the largest number of taste buds?
A) pharynx
B) foliate papillae
C) filiform papillae
D) fungiform papillae
E) vallate papillae
vallate papillae
Destruction to your left glossopharyngeal nerve would result in
A) inability to sense sweetness at the tip of your tongue.
B) inability to identify sour and bitter foods at the posterior one-third of the tongue.
C) inability to smell.
D) inability to see.
E) inability to hear.
inability to identify sour and bitter foods at the posterior one-third of the tongue.
Stimulation of receptors within the trigeminal nerve might produce a perception of
A) intensely sweet.
B) intensely sour.
C) quite salty.
D) peppery hot.
E) bitter.
peppery hot
An adult has approximately ________ taste buds.
A) 100
B) 10,000
C) 4,000,000
D) 500
E) 50,000
10,000
A patient who experienced head trauma has lost the ability to taste spicy food. You should expect damage to cranial nerve
A) VII.
B) III.
C) IX.
D) V.
E) XII.
V
Which of the following is not one of the six primary taste sensations?
A) sweet
B) peppery
C) sour
D) salty
E) umami
peppery
The taste sensation that is triggered by the amino acid glutamate is known as
A) sweet.
B) umami.
C) salty.
D) peppery.
E) sour.
umami
The sense of taste is also known as
A) proprioception.
B) maculation.
C) gustation.
D) olfaction.
E) sublation.
gustation
The membrane structures that respond to chemical stimuli to produce sweet, bitter, and umami sensations are called
A) gustatory hairs.
B) chemically-gated ion channels.
C) voltage-regulated ion channels.
D) G proteins.
E) papillae.
G proteins
Taste buds are clusters of individual
A) vallate papillae.
B) gustatory hairs.
C) epithelial cells.
D) olfactory receptors.
E) gustatory receptors.
gustatory receptors
Each gustatory cell extends ________ (called taste hairs) into the surrounding fluids through a narrow taste pore.
A) microvilli
B) villi
C) papillae
D) palpebra
E) G proteins
microvilli
Taste buds on the tongue are often associated with epithelial projections called
A) macula.
B) lingual papillae.
C) ganglion cells.
D) pharyngeal papillae.
E) ampulla.
lingual papillae
A typical gustatory cell survives for only about ________ day(s) before it is replaced.
A) 10
B) 1
C) 60
D) 30
E) 365
10
Tears pass through which of the following structures before emptying into the nasal cavity?
A) anterior chamber
B) posterior chamber
C) nasolacrimal duct
D) scleral venous sinus
E) corneoscleral junction
nasolacrimal duct
Which structure of the eye is the most sensitive but contains no blood vessels?
A) iris
B) choroid
C) retina
D) sclera
E) cornea
cornea
Which of the following is incorrectly matched?
A) anterior chamber: between the cornea and the iris
B) posterior chamber: between the iris and the lens
C) ciliary body: site of extrinsic eye muscle attachment
D) retina: consists of a pigmented layer and a neural layer
E) sclera: covers most of the ocular surface
ciliary body: site of extrinsic eye muscle attachment
Which of the following is a function of the pigmented layer of the retina?
A) provide eye color
B) house the photoreceptors
C) secrete vitreous humor
D) absorb light passing through the neural layer
E) refract light onto the photoreceptors
absorb light passing through the neural layer
The purpose of the intrinsically photosensitive retinal ganglion cell (ipRGC) photoreceptors are
A) to give clear sharp vision.
B) to allow us to see in dim light.
C) to replace rods as we age.
D) influence the circadian rhythm.
E) to provide color vision.
influence the circadian rhythm
The primary cause of blindness in the United States is
A) cataracts.
B) diabetic retinopathy.
C) glaucoma.
D) retinal detachment.
E) retinopathy of prematurity.
diabetic retinopathy
Jonathan received a strong blow to the eye. The eyeball remained intact but he suddenly could not see. This has likely caused
A) development of cataracts.
B) a detached retina.
C) development of glaucoma.
D) astigmatism.
E) myopia.
a detached retina
Which of the following is FALSE concerning lacrimal glands?
A) They produce a strongly hypertonic fluid.
B) They produce most of the volume of tears.
C) They produce lysozyme.
D) They produce watery, slightly alkaline secretions.
E) They are located in recesses in the frontal bones.
They produce a strongly hypertonic fluid
The ________ division of the autonomic nervous system is said to function during “rest and digest.”
A) sympathetic
B) parasympathetic
C) thoracolumbar
D) visceral
E) somatomotor
parasympathetic
The sympathetic division of the ANS is also known as which of the following?
A) somatic division
B) craniosacral division
C) resting division
D) thoracolumbar division
E) lumbosacral division
thoracolumbar division
Preganglionic fibers leave the CNS and then synapse on
A) postganglionic fibers.
B) visceral reflex responses.
C) motor neurons.
D) ganglionic neurons.
E) afferent neurons.
ganglionic neurons.
Preganglionic neurons of the autonomic nervous system are located in
A) the brain.
B) the lateral gray horns of the spinal cord.
C) the posterior gray horns of the spinal cord.
D) both the brainstem and the lateral gray horns of the spinal cord.
E) the cerebrum
both the brainstem and the lateral gray horns of the spinal cord.
Ganglionic neurons innervate all of the following except
A) smooth muscle.
B) cardiac muscle.
C) adipose tissue.
D) glands.
E) skeletal muscle
skeletal muscle
The parasympathetic nervous system is especially active during which physiological state?
A) exertion
B) trauma
C) digestion
D) stress
E) exercise
digestion
A visceral motor neuron whose cell body is within the CNS is called a(n)________ neuron.
A) upper motor
B) lower motor
C) preganglionic
D) postganglionic
E) somatomotor
preganglionic
In which system are the ganglia in or near the target organ?
A) sympathetic division of the ANS
B) parasympathetic division of the ANS
C) somatic nervous system
D) afferent nervous system
E) central nervous system
parasympathetic division of the ANS
The parasympathetic division is also called the ________ division.
A) thoracolumbar
B) craniosacral
C) thoracocranial
D) craniolumbar
E) craniococcygea
craniosacral
Which of the following is not controlled by the ANS?
A) skeletal muscle system
B) cardiovascular system
C) respiratory system
D) digestive system
E) urinary system
skeletal muscle system
visceral motor neuron nuclei are located in which part of the brain?
A) midbrain
B) primary motor cortex
C) hypothalamus
D) thalamus
E) cerebellum
hypothalamus
Sympathetic postganglion fibers that innervate the small intestines originate from the
A) inferior mesenteric ganglion.
B) cardiac plexus.
C) celiac ganglion.
D) sacral splanchnic nerves.
E) superior mesenteric ganglion
superior mesenteric ganglion
Sympathetic nerves contain postganglionic fibers that innervate organs in which cavity?
A) thoracic
B) pelvic
C) abdominal
D) cranial
E) abdominopelvic
thoracic
Which is not a sympathetic ganglion?
A) celiac
B) otic
C) inferior mesenteric
D) superior mesenteric
E) sacral chain
otic
A pedestrian narrowly avoids being hit by an oncoming car. He notices that it takes a little while for his heart rate and respiratory rate to return to normal. This is likely because
A) the parasympathetic nervous system has become activated.
B) sympathetic activation of the adrenal medulla has released epinephrine and norepinephrine
into the bloodstream.
C) the splanchnic nerves have become activated.
D) somatic motor neurons have increased the heart and respiratory rate.
E) the corticospinal pathway has become ac
tivated.
sympathetic activation of the adrenal medulla has released epinephrine and norepinephrine
into the bloodstream.
Sympathetic preganglionic fibers are ________ and have ________ axons.
A) short; myelinated
B) short; unmyelinated
C) long; myelinated
D) long; unmyelinated
E) intermediate; small
short; myelinated
In the sympathetic nervous system, where are the preganglionic neurons located?
A) cervical and sacral segments of the spinal cord
B) sacral segments of the spinal cord
C) brain stem
D) thoracic and lumbar segments of the spinal cord
E) cerebellum
thoracic and lumbar segments of the spinal cord
Preganglionic neurons of the sympathetic nervous system are located in the
A) lateral gray horns of the cervical cord.
B) anterior gray horns of the cervical and thoracic spinal cord.
C) lateral gray horns of segments T1 to L2 of the spinal cord.
D) anterior gray horns of segments T1 to L2 of the spinal cord.
E) lateral gray horns of T1 to S2 of the spinal cord.
lateral gray horns of segments T1 to L2 of the spinal cord.
Clusters of ganglionic sympathetic neurons lying along either side of the spinal cord are called sympathetic ________ ganglia.
A) intramural
B) collateral
C) chain
D) paravertebral
E) adrena
chain
Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called ________ ganglia.
A) intramural
B) collateral
C) chain
D) paravertebral
E) adrenal
collateral
Injury to the neurons of a collateral ganglion would affect the function of the
A) heart.
B) pupils.
C) sweat glands.
D) digestive tract.
E) arrector pili muscles.
digestive tract.
Damage to the ventral roots of the first five thoracic spinal nerves on the right side of the body would interfere with the ability to
A) dilate the right pupil.
B) constrict the right pupil.
C) dilate the left pupil.
D) constrict the left pupil.
E) smile and frown
dilate the right pupil.
Postganglionic axons usually are
A) myelinated.
B) unmyelinated.
C) larger than preganglionic fibers.
D) located in the brain.
E) located in the spinal cord
unmyelinated.
Stimulation of the neurons in the celiac ganglion would lead to
A) relaxation of the urinary sphincter.
B) increased heart rate.
C) conversion of liver glycogen reserves into glucose.
D) activation of ventral sweat glands.
E) increased gastric motility
conversion of liver glycogen reserves into glucose.
Collateral ganglia contain neurons that innervate tissues and organs in which cavity?
A) thoracic
B) pelvic
C) abdominal
D) craniosacral
E) abdominopelvic
abdominopelvic
Sympathetic nerves
A) provoke feelings of sympathy.
B) allow us to relax, rest, and recover.
C) contains short preganglionic fibers and longer postganglionic fibers.
D) control swallowing.
E) stimulate gastric secretion
contains short preganglionic fibers and longer postganglionic fibers.
Preganglionic fibers that innervate the collateral ganglia form the
A) adrenal medulla.
B) celiac ganglia.
C) sympathetic chain ganglia.
D) inferior mesenteric ganglia.
E) splanchnic nerves
splanchnic nerves
Which of the following is not innervated by the celiac ganglia?
A) liver
B) spleen
C) stomach
D) pancreas
E) bladder
bladder
The adrenal medullae secrete
A) medullin.
B) epinephrine.
C) norepinephrine.
D) renin.
E) both epinephrine and norepinephrine
both epinephrine and norepinephrine
Specialized ganglionic sympathetic neurons that release hormones into the bloodstream are found within the
A) intramural ganglia.
B) collateral ganglia.
C) chain ganglia.
D) brain stem.
E) adrenal medullae
adrenal medullae
Postganglionic fibers that innervate targets in the body wall or thoracic cavity originate on neurons within
A) intramural ganglia.
B) collateral ganglia.
C) sympathetic chain ganglia.
D) suprarenal ganglia.
E) white rami communicantes.
sympathetic chain ganglia.
Each of the following effects is associated with the action of postganglionic sympathetic fibers except
A) increased sweat secretion.
B) reduced circulation to the skin.
C) decreased heart rate.
D) dilation of the pupils.
E) increased blood flow to skeletal muscles.
decreased heart rate.
Splanchnic nerves
A) originate from first-order neurons located in the upper five thoracic segments of the spinal cord.
B) innervate the viscera or internal organs.
C) control sympathetic function of structures in the thorax.
D) connect chain ganglia.
E) are formed of parasympathetic fibers
innervate the viscera or internal organs.
Autonomic disorders would not cause
A) excessive perspiration.
B) appetite.
C) sexual arousal.
D) problems in maintenance of blood pressure.
E) problems related to skeletal muscle function
problems related to skeletal muscle function
The celiac, superior mesenteric and inferior mesenteric ganglia are collectively called ________ ganglia.
A) chain
B) collateral
C) intramural
D) paravertebral
E) termina
collateral
The ________ nervous system stimulates the arrector pili muscles and gives you
“goosebumps.”
A) parasympathetic
B) afferent
C) dorsal
D) sympathetic
E) somatic
sympathetic
As the result of an accident, the white rami communicantes of spinal nerves T1 and T2 on the left side of Brad’s body are severed. What organ(s) would you expect to be affected by this
injury?
A) left pupil
B) right pupil
C) heart
D) both pupils
E) left pupil and heart
left pupil and heart
Identify the structure labeled “1.”
A) somatic motor neuron
B) preganglionic neuron
C) sensory neuron
D) ganglionic neuron
E) astrocyte
preganglionic neuron
Identify the round structure labeled “3.”
A) dorsal root ganglion
B) spinal nerve
C) chain ganglion
D) intramural ganglion
E) rami communicantes
chain ganglion
Identify the structure labeled “4.”
A) preganglionic neuron
B) postganglionic fibers of sympathetic nerve
C) preganglionic fibers of sympathetic nerve
D) collateral ganglion
E) white ramus communicans
postganglionic fibers of sympathetic nerve
Identify the structure labeled “2.”
A) ventral root
B) dorsal ramus
C) spinal nerve
D) ventral ramus
E) white ramus communicans
spinal nerve
Identify the structure labeled “6.”
A) somatic motor neuron
B) preganglionic neuron
C) sensory neuron
D) ganglionic neuron
E) astrocyte
ganglionic neuron
Tom suffers from hypertension (high blood pressure). Which of the following might help
deal with his problem?
A) a drug that blocks alpha-1 receptors in smooth muscle
B) a drug that blocks alpha-2 receptors in adipose tissue
C) a drug that increases cAMP levels in cardiac muscle tissue
D) a drug that blocks beta receptors in cardiac muscle tissue
E) a drug that blocks alpha-1 receptors in smooth muscle and blocks beta receptors in cardiac muscle tissue
a drug that blocks alpha-1 receptors in smooth muscle and blocks beta receptors in cardiac
muscle tissue
Drugs that have effects similar to those of sympathetic activation are called
sympathomimetic drugs. Which of the following would you not expect to observe in a person
who has taken a sympathomimetic drug?
A) sweating
B) increased heart rate
C) dilation of respiratory passages
D) decreased blood pressure
E) increased blood sugar level
decreased blood pressure
Drugs known as beta-blockers may be useful for treating
A) constipation.
B) diarrhea.
C) excessive salivation.
D) excessive heart rate.
E) prostate disorders.
excessive heart rate.
Sympathetic axon terminals form a branching network of swollen segments called
A) ganglia.
B) receptors.
C) varicosities.
D) nuclei.
E) bulbs.
varicosities.
The majority of norepinephrine released by varicosities only briefly affects the target tissue
because it is quickly reused or broken down by
A) monoamine oxidase.
B) acetylcholinesterase.
C) nitroxide.
D) decarboxylase.
E) catalase
monoamine oxidase.
Which of the following is a sympathetic neurotransmitter used for vasodilation?
A) acetylcholine
B) norepinephrine
C) dopamine
D) serotonin
E) nitric oxide
nitric oxide
Stimulation of the beta receptors on heart muscle cells results in
A) the decrease in ATP production.
B) increased heart rate and force of contraction.
C) decreased force of contraction.
D) slower heart rate.
E) inhibition of the heart muscle
increased heart rate and force of contraction.
Regarding the sympathetic nervous system, the neurotransmitter ACh is
A) always excitatory when used in the synapses of the sympathetic nervous system.
B) broken down by COMT.
C) going to reduce the activity of the other neurotransmitter norepinephrine.
D) broken down by monoamine oxidase.
E) a chemica
l similar to the structure of adrenaline.
always excitatory when used in the synapses of the sympathetic nervous system.
Which of the following statements is true?
The stimulation of beta-adrenergic receptors can lead to
1. an increase in metabolic activity.
2. contraction of airway smooth muscle.
3. the breakdown of triglycerides within adipocytes.
A) 1
B) 2
C) 3
D) 1 and 3
E) 1, 2, and 3
1 and 3
An inhaler used to treat airway constriction in asthma or allergy might contain a drug that
A) activates β1 adrenergic receptors.
B) activates β2 adrenergic receptors.
C) activates muscarinic cholinergic receptors.
D) blocks β2 adrenergic receptors.
E) activates β2 adrenergic receptors or activates muscarinic cholinergic receptors.
activates β2 adrenergic receptors.
Most sympathetic effector junctions release norepinephrine but a significant number release
acetylcholine instead. Which of these is an example of an organ of the cholinergic type?
A) the heart
B) a blood vessel in the skin
C) a sweat gland
D) the liver
E) the salivary glands
a sweat gland
A certain drug decreases heart rate by blocking a receptor on cardiac pacemaker cells. This
drug probably binds to ________ receptors.
A) nicotinic cholinergic
B) muscarinic cholinergic
C) alpha-1 adrenergic
D) alpha-2 adrenergic
E) beta-1 adrenergic
beta-1 adrenergic
Drugs that stimulate alpha receptors, causing constriction of peripheral vessels, are
A) sympathetic blocking agents.
B) sympathomimetic.
C) parasympathetic blocking agents.
D) parasympathomimetic.
E) autonomic blocking agents
sympathomimetic.
Sympathomimetic drugs might be used to
A) decrease heart rate.
B) decrease blood pressure.
C) dilate airways.
D) increase gastric motility.
E) reduce blood sugar levels
dilate airways.
If the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called
A) cholinergic.
B) anergic.
C) adrenergic.
D) synergic.
E) noradrenergic.
adrenergic.
Disorders involving the vagus nerve might
cause
A) food to remain in your stomach longer.
B) a drop in blood pressure.
C) constriction of the pupils.
D) more saliva production.
E) increased sweating
food to remain in your stomach longer.
The statement “It initiates contraction of urinary bladder smooth muscle” is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the somatic nervous system
true only for the parasympathetic nervous system
Preganglionic fibers of parasympathetic neurons are present in all of the following cranial
nerves except
A) III.
B) VII.
C) IX.
D) X.
E) XII.
XII.
Almost 75 percent of all parasympathetic outflow travels along the ________ nerve(s).
A) splanchnic
B) facial
C) vagus
D) glossopharyngeal
E) trigemina
vagus
Which of the following is not a parasympathetic ganglion?
A) ciliary
B) pterygopalatine
C) submandibular
D) otic
E) celiac
celiac
Parasympathetic functions include all of the following, except
A) decrease in the rate of cardiac contraction.
B) constriction of the pupils.
C) dilation of the airways.
D) stimulation of urination.
E) stimulation of defecation
dilation of the airways.
Which of the following statements concerning the parasympathetic division of the autonomic
nervous system is false?
A) Preganglionic neurons are located in the brain stem and sacral region of the spinal cord.
B) Ganglionic neurons are located in ganglia within or near to effectors.
C) Preganglionic fibers are relatively short and postganglionic fibers are relatively long.
D) The actions of the parasympathetic division are more localized than those of the sympathetic division.
E) The ganglionic neurons always release acetylcholine
Preganglionic fibers are relatively short and postganglionic fibers are relatively long.
Parasympathetic preganglionic fibers leave the CNS in all of the following locations except
A) the midbrain.
B) the pons.
C) the medulla oblongata.
D) spinal segments T1-L2.
E) spinal segments S2-S4
spinal segments T1-L2.
Preganglionic fibers from the sacral segments of the spinal cord form the ________ nerve(s).
A) pelvic
B) splanchnic
C) celiac
D) sympathetic
E) mesenteric
pelvic
Parasympathetic stimulation
A) increases heart rate.
B) increases gastric motility.
C) causes sweat glands to secrete.
D) causes blood vessels in the skin to dilate.
E) causes the pupils to dilate.
increases gastric motility.
Intramural ganglia in the digestive, urinary, and reproductive organs are innervated by the ________ nerves.
A) spinal
B) splanchnic
C) chain
D) pelvic
E) collateral
pelvic
Damage to the glossopharyngeal nerve would likely cause
A) increase in heart rate.
B) problems in sexual arousal.
C) a reduction in saliva.
D) visual problems.
E) urine retention.
a reduction in saliva.
Parasympathetic ganglia that are near the eyes and salivary glands are called ________
ganglia.
A) somatic
B) collateral
C) contralateral
D) intramural
E) terminal
terminal
The statement “Its postganglionic axons always use acetylcholine as the neurotransmitter” is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the somatic nervous system
true only for the parasympathetic nervous system.
Nicotinic receptors
A) respond to epinephrine.
B) respond to norepinephrine.
C) open chemically-gated sodium ion channels.
D) can be either excitatory or inhibitory in function.
E) are found at synaptic junctions of the sympathetic nervous system.
open chemically-gated sodium ion channels
Muscarinic receptors
A) are normally activated by acetylcholine.
B) are found mostly in autonomic ganglia.
C) always produce an excitatory response.
D) control sodium channels in the affected membrane.
E) are blocked by norepinephrine
are normally activated by acetylcholine.
The statement “Preganglionic axon terminals release acetylcholine” is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the soma
tic nervous system
true for both the parasympathetic and sympathetic nervous systems.
Parasympathetic effects are localized and short-lived because
A) muscarinic receptors are deactivated by norepinephrine.
B) acetylcholine is inactivated at the synapse by acetylcholinesterase.
C) norepinephrine hyperpolarizes the postganglionic membrane.
D) norepinephrine is inactivated at the synapse by monoamine oxidase.
E) epinephrine blocks the muscarinic receptors
acetylcholine is inactivated at the synapse by acetylcholinesterase.
Nicotine poisoning differs from muscarine poisoning in that
A) it causes vomiting.
B) it causes salivation.
C) it causes sweating.
D) it causes skeletal muscle convulsions.
E) it causes diarrhea
it causes skeletal muscle convulsions.
Drugs that block nicotinic receptors would be
A) sympathomimetic.
B) parasympathomimetic.
C) parasympathetic blocking agents.
D) sympathetic blocking agents.
E) autonomic blocking agents
autonomic blocking agents
Parasympathetic blocking agents can be useful in treating
A) heart failure.
B) high blood pressure.
C) urinary incontinence.
D) hyperactivity.
E) excessive sweating
urinary incontinence.
A doctor places drops in the eyes to dilate the pupils for an examination. The type of drug
that is used is a(n) ________ drug.
1. sympathomimetic
2. parasympathomimetic
3. adrenergic activating
4. cholinergic activating
A) 1, 2
B) 3
C) 4
D) 1, 3
E) 2, 4
1, 3
Mary accidentally ate poisonous mushrooms that contain muscarine. You would expect to
observe all of the following symptoms except
A) diarrhea.
B) salivation.
C) very fast heart rate.
D) sweating.
E) low blood pressure.
very fast heart rate.
The ganglia located lateral to the vertebral column are part of the sympathetic
A) chain.
B) tract.
C) decussation.
D) tubes.
E) canal
chain.
Which of the following is not a true statement regarding the sympathetic division?
A) PNS ganglia are near the vertebral column.
B) Preganglionic fibers are relatively short.
C) Preganglionic neurons are located between T1 and L2 of the spinal cord.
D) The effects are not widespread but very specific and localized.
E) Postganglionic fibers are relatively long
The effects are not widespread but very specific and localized.
All parasympathetic neurons are
A) adrenergic.
B) cholinergic.
C) nitroxidergic.
D) gamma-aminobutyric.
E) dopaminergic
cholinergic.