A&P - Chapter 22 (Part 1)

Question 1

What kind of movement is in the autonomic nervous system? (2)

Answer 1

1. Involuntary

2. Visceral motor

Question 2

Where does the autonomic nervous system conduct impulses?

Answer 2

From the CNS to the smooth, cardiac muscles and glands

Question 3

What 2 parts make up the autonomic nervous system motor divisions?

Answer 3

1. Sympathetic

2. Parasympathetic

Question 4

Sympathetic nervous system

Answer 4

Flight or flight

Question 5

Parasympathetic

Answer 5

Rest and digest

Question 6

What areas are associated with the sympathetic nervous system? (2)

Answer 6

1. Thoracic

2. Lumbar

Question 7

What areas are associated with the parasympathetic? (2)

Answer 7

1. Cranial

2. Sacral

Question 8

What does the autonomic nervous system contain? (2)

Answer 8

1. Afferent
   - sensory
2. Efferent
   - motor

Question 9

What are the major functions of the autonomic nervous system? (4)

Answer 9

Regulates…

1. Heartbeat
2. Smooth muscle contractions
3. Glandular secretions
4. Metabolic functions

Question 10

What does regulating metabolic functions allow?

Answer 10

Maintenance of homeostatic balance

- reacts to threats that could disrupt the balance

Question 11

Do the sympathetic and parasympathetic divisions have separate neural pathways?

Answer 11

Yes

Question 12

What do many autonomic effectors have?

Answer 12

Dual innervated by both divisions of the ANS

Question 13

What does dual innervation of both the divisions of the ANS allow?

Answer 13

Very precise control of the effectors

Question 14

What is each efferent ANS pathway made up of? (3)

Answer 14

1. Autonomic nerves
2. Ganglia
3. Plexuses

• all made up of efferent autonomic neurons

Question 15

What does efferent autonomic regulation depend on?

Answer 15

Feedback from sensory receptors

Question 16

What do 2 efferent neurons conduct?

Answer 16

Information/impulses from the CNS to the autonomic effectors

Question 17

What are the 2 efferent neurons?

Answer 17

1. Preganlionic neurons

2. Postganglionic neurons

Question 18

What do preganglionoic neurons conduct?

Answer 18

Impulses from the CNS to an autonomic ganglia where it synapses with the postganglionic neurons

Question 19

What do postganglionic neurons conduct?

Answer 19

Impulses to visceral effectors

Question 20

What do sympathetic postganglionic neurons have? (2)

Answer 20

1. Dendrites
2. Cell bodies

• in the sympathetic ganglia

Question 21

Where are most dendrites/cell bodies located in the sympathetic ganglia?

Answer 21

In front and on each side of the spinal column

- in the lateral gray horns of the upper lumbar segments of the spinal cord

Question 22

Where does each sympathetic chain ganglia run from?

Answer 22

C2 to the coccyx

Question 23

How many chains are normally on each side of the vertebral column

Answer 23

22

Question 24

What can the preganglionic neurons do once inside the sympathetic chain ganglion? (3)

Answer 24

1. Synapse with the sympathetic postganglionic neurons
2. Send ascending/descending branches through the sympathetic trunk to synapse with the postganglionic neurons in other chain ganglia
3. Pass through one or more chain ganglia without synapsing