Chapter 16 - The Autonomic Nervous System Notes Flashcards Preview

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ANS

Autonomic nervous system

1

Function of ans

Coordinates the physiological systems of the body

2

Ans is a _____ system

Motor

3

Ans is under ______ control

Involuntary

4

Ans controls these functions

Heart rate
Blood pressure
Respiration
Gi functions
Glandular secretions

5

Number of divisions in ans

2

6

What are division of ans

Sympathetic
Parasympathetic

7

Sympathetic division consists of

Preganglionic fibers from the lumbar and thoracic spinal nerve segments
(Thoracolumbar)

8

Sympathetic division made up of nerve fibers from

Segments of T1-L2

9

What are paravertebral ganglia

Sympathetic chain ganglia

10

Where is sympathetic chain ganglia located

Adjacent to spinal column in thoracolumbar reguon

11

What division has flight or fight system

Sympathetic - preganglionic fibers

12

Nerves that exit the sympathetic chain ganglia are called

Sympathic nerves

13

Where do sympathetic nerves travel

Directly to visceral organs

14

What are the second order neurons to visceral organs

Sympathetic nerves

15

Sympathetic ganglia that are separate from the ganglia are called

Collateral ganglia or prevertebral ganglia

16

Collateral ganglia form the

Splanchnic nerves

17

What does the splanchnic nerves innervate

Visceral organs

18

Sympathetic fibers also innervate the ______ that sit on the kidneys

Adrenal glands

19

What does the adrenal glands secrete

Epinephrine
Norepinephrine

20

The adrenal gland is considers a specialized structure that contains

Second order neuron

21

The sympathetic division influences all ______ and ________ structures in the body

Visceral
Somatic

22

Effects of sympathetic stimulation (increases)

Mental alertness
Metabolic rate
Respiratory rate
Heart rate
Blood pressure

23

Effects of sympathetic stimulation (activate/deactivate)

Activate:
Energy reserves
Sweat glands

Deactivate:
Digestive and urinary tract functions

24

The parasympathetic division is composed of

Neurons from brain stem and sacral nerve roots
(Craniosacral)

25

Functions of PSD directed towards

Food processing
Absorption of nutrients
Relaxing states of the body

26

PSD = _______
SD = ________

Calming system
Activity system

27

Neurotransmitter involved in the psd

Acetylcholine (ach)

28

All psd synapses secrete

Ach

29

The psd nervous system influences

Only visceral structures supplied by cranial nerves or those in abdominopelvic cavity