Autonomic Nervous System ppt 24

Question 1

What is the autonomic response?

Answer 1

Emotional responses of the body & responses to environment without conscious knowledge of the individual.

Question 2

What does the ANS control?

Answer 2

functions of the involuntary organs of the body that include heart & blood vessels, exocrine & endocrine glands, & all visceral organs.

functions of the body such as circulation, respiration, digestion, excretion, & reproduction.

Question 3

Parasympathetic preganglionic neuron are referred to as

Answer 3

crainosacral outflow

Question 4

Sympathetic preganglionic neurons are referred to as

Answer 4

thoracolumbar outflow

Question 5

What is the peripheral ganglion of the lacrimal gland?

Answer 5

Pterygopalatine ganglion

Question 6

Sympathetic and Parasympathetic preganglionic

Answer 6

myelinated type B fiber

Question 7

Sympathetic and Parasympathetic postganglionic

Answer 7

unmyelinated type C fiber

Question 8

Parasympathetic neurotransmitter

Answer 8

pre- Ach

post- Ach

Question 9

Sympathetic neurotransmitter

Answer 9

pre- Ach

post- Ach/NE

Question 10

What do sympathies fibers do on the visceral organs

Answer 10

increase heart and respiratory rates, and inhibit digestion and elimination

Question 11

What is the dual ANS innervation of the eye?

Answer 11

• Pupillary dilator muscle (sympathetic) dilates pupil

- Constrictor pupillae (parasympathetic) constricts pupil

Question 12

What is the dual ANS innervation of the external genitalia?

Answer 12

• Point and Shoot
• Parasympathetic fibers cause vasodilation and are responsible for erection
• Sympathetic fibers cause ejaculation

Question 13

What effectors receive only sympathetic innervation?

Answer 13

adrenal medulla, erector pili muscles, sweat glands and many blood vessels

Question 14

ANS regulation of the enteric (gut)

Answer 14

Sympathetic and parasympathetic influence

The enteric nervous system can also function independently through local reflexes

Question 15

What are visceral reflex arc?

Answer 15

same basic components as somatic reflexes, but all visceral reflexes are polysynaptic.

Question 16

What is orthostatic hypotension?

causes?

Answer 16

sitting or lying down suddenly stands up.

Caused by decrease the frequency of action potentials in sympathetic nerves innervating blood vessels.

Question 17

What is Raynaud’s?

Answer 17

spasmodic contraction of blood vessels in the periphery of the body, results in pale, cold hands

exaggerated sensitivity of blood vessels to sympathetic innervation

Question 18

Achalasia

Answer 18

difficulty in swallowing and in controlling contraction of the esophagus

abnormal parasympathetic regulation of the swallowing reflex.

Question 19

Hirschprung’s disease

Answer 19

Ineffective parasympathetic stimulation and a predominance of sympathetic stimulation of the colon inhibit peristaltic contractions

Question 20

Familial Dysutonomia

Answer 20

autosomal recessive gene, causes reduced tear gland secretion, poor vasomotor control, trouble in swallowing, and other symptoms. It is the result of poorly controlled autonomic reflexes (loss of neurons in autonomic and sensory ganglia.)

Question 21

Horner’s Syndrome

Answer 21

Pancoast tumor in the apex of the lung as the tumor compresses the sympathetic fibers

hornE PAM

(pseudoptosis),
(miosis),
(Anhidrosis)
Sinking of eyeball in the orbit (Enophthalmos),