Autonomic Nervous System

Question 0

What is homeostasis

Answer 0

Sense of body keeping it self and balance

Question 1

What is the role of the autonomic nervous system

Answer 1

Homeostasis
Vasculature
Control internal organs

Question 2

What is vasculature

Answer 2

Way ANS control homeostasis and internal organs

Can do vasoconstriction and vasodilation

Question 3

What are autonomic sensations

Where they from

Answer 3

Stretch/pressure- from mechanoreceptors
Pain-from nociceptors
Temperature-from Thermoreceptors
Oxygen and pH-from chemoreceptors

Question 4

Mechanoreceptors respond to

Answer 4

Pressure in aortic barrel receptors, blood pressure, carotid sinuses and lungs
Stretch in veins, bladder, intestines

Question 5

What do chemoreceptors respond to

Answer 5

Carotid and aortic bodies-oxygen in them
Medulla- hydrogen ion concentration,pH, co2
Hypothalamus- involved in homeostasis, glucose, electrolyte levels in blood

Question 6

What are the stimuli for nociceptors

Where are they located

Answer 6

Stretch, ischemia, irritating chemicals

Internal viscera, walls of arteries

Question 7

Where Thermo receptors located

What do they sense

Answer 7

Hypothalamus-internal temperature

Skin-external temperature

Question 8

What are in the afferent pathways

Answer 8

Dorsal roots

cranial nerves

Question 9

What are the cranial nerves

Answer 9

V I I-facial
IX- glasil pharangelia
X-vagus

Question 10

What do all three of the cranial nerves carry info about

Do nine and 10 also carry info about

Answer 10

Face

Visceral functions

Question 11

Are the visceral control areas

Answer 11

The pons

The medulla

Question 12

Does the medulla control

Answer 12

Heart rate
respiration
vasoconstriction and dilation

Question 13

Do the Pons control

Answer 13

Respiration

Question 14

What are the visceral control areas essential for

Do problems in these areas affect

Answer 14

Maintenance of life

Heart lungs and other areas and can be hazardous to life

Question 15

The three main regions of the visceral modulatory areas

Answer 15

Hypothalamus
thalamus
limbic system

Question 16

What is the hypothalamus

Answer 16

The master control region for homeostasis cardiovascular respiratory and metabolic

Question 17

It is a thalamus get input from and where does it project it to

Answer 17

ANS

limbic system

Question 18

What is the limbic system

Answer 18

Composed of regions and cerebral cortex and sub cortical regions
way of connecting emotions and feelings with visceral functions

Question 19

What are the efferent (motor) system is composed of

Answer 19

Somatic -1 neuron

autonomic- 2 neurons

Question 20

What does the preganglionic neurotransmitter do

Answer 20

Make acetylcholine which binds to nicotinic

Question 21

What does the second neuron in the parasympathetic nervous system do

Answer 21

Release acetylcholine

Question 22

What does the sympathetic nervous system release

Answer 22

Norepinephrine and epinephrine and acetylcholine

Question 23

What is the adrenal medulla

Answer 23

Glands that secrete hormones into the blood

Question 24

What hormones does the adrenal medulla secrete

Answer 24

Mostly Epinephrine little bit of norepinephrine

Question 25

What are the four main receptors that bind to most sympathetic fibers

Answer 25

Alpha one and two receptors | Beta one and two receptors

Question 26

Where is the preganglionic neuron located

Answer 26

In spinal cord between T1 and L2 in lateral horn Sacral sc s2-s4 Brain stem

Question 27

What does the preganglionic neuron innervate

Answer 27

Body and adrenal Medulla

Question 28

What is the only part of the autonomic nervous system that innervates the extremities

Answer 28

Sympathetic nervous system

Question 29

What are the targets in the sympathetic nervous system

Answer 29

Blood vessels sweat glands muscles that erect hair on skin internal viscera

Question 30

What are the functions of the sympathetic nervous system

Answer 30

Vasodilation vasoconstriction Increased heart rate and contractility bronchodilation slow down G.I. tract

Question 31

What is the receptor to increased heart rate and contractility

Answer 31

Beta 1

Question 32

What is the receptor to do bronchodilation

Answer 32

Beta 2

Question 33

What is the nerve supply composed of in the sympathetic nervous system to the head and upper limbs

Answer 33

Superior cervical ganglion middle of cervical ganglion stellate ganglion

Question 34

What does the sympathetic cervical ganglia supply

Answer 34

Blood vessels of the skin of face and upper extremities Sweating in skin of the face and upper extremities Pupillary dilation Supplies one of two muscles that elevate upper eyelid Salivary gland produce thick saliva Control body temperature

Question 35

How does the sympathetic nervous system regulate body temperature

Answer 35

Increased metabolic rate -generate more heat, increasing temp Decreased blood flow to skin -increase/maintain body temperature Sweating -decrease temperature Erection- increase temperature. (Piloerection)

Question 36

What is the parasympathetic nervous system also called

Answer 36

Craniosacral

Question 37

What are the cranial nerves in the parasympathetic nervous system

Answer 37

Cranial nerve III- oculomotor nerve cranial nerve VII - facial nerve cranial nerve IX -glossopharyngeal nerve

Question 38

What does cranial nerve III do

Answer 38

Constrict pupil | increased convexity of lens- near vision

Question 39

What does cranial nerve VII do

Answer 39

Salivary glands

Question 40

What does cranial nerve IX do

Answer 40

Salivary glands | lachrymal glands

Question 41

What is the biggest nerve

Answer 41

Cranial nerve X-vagus nerve

Question 42

What percent of all fibers come from cranial nerve X

Answer 42

75% of brainstem autonomic efferents

Question 43

What does cranial nerve X do

Answer 43

Heart- lower heart rate and contraction Lungs- bronchoconstriction Upper G.I. tract and liver- activate to digest food and store energy

Question 44

What does parasympathetic nervous system in the sacral spinal cord control

Answer 44

Bowel and bladder | sexual organs

Question 45

What is a unique function the sympathetic system does

Answer 45

Effectors in limbs face and body wall | assist in elevation of upper eyelid

Question 46

What is a unique function the parasympathetic system does

Answer 46

Increased convexity of lens

Question 47

In peripheral nerve damage what do you see

Answer 47

Vasodilation skin looks flushed absence of sweating

Question 48

What is damage to peripheral nerve (cervical ganglia) known as what do you see

Answer 48

Horner's syndrome constriction of pupil drooping eyelid

Question 49

What are causes of Horner syndrome

Answer 49

Trauma surgery to neck lung cancer

Question 50

What does injury to the spinal cord cause

Answer 50

Bowel and bladder control problems blood pressure regulation body temperature

Question 51

What does injury to the brain stem cause

Answer 51

Interferes with the control of heart rate blood pressure respiration may affect cranial nerve nuclei

Question 52

Does damage to the cerebral region -hypothalamus cause

Answer 52

Disrupt homeostasis - weight - temperature regulation - emotional displays