The Peripheral Nervous System

Question 1

The peripheral nervous system

Answer 1

Stimulus -> Sensory Neuron (afferent) -> CNS -> Efferent neurons -> Somatic motor neurons or Autonomic neurons

Question 2

Peripheral nervous system structure are what?

Answer 2

Outside the brain and spinal cord

Question 3

What do nerves allow the CNS to do?

Answer 3

Receive information and take action

Question 4

Functional components of the PNS

Answer 4

Sensory inputs and motor output either somatic or visceral

Question 5

What is somatic?

Answer 5

Skeletal muscles

Question 6

What is visceral?

Answer 6

ANS; Smooth muscles, cardiac muscles, glands

Question 7

What are general sensory inputs?

Answer 7

touch, pain, pressure, temperature

Question 8

What are special sensory inputs?

Answer 8

hearing, vision, taste, smell

Question 9

Where does sensory (afferent) signals go?

Answer 9

Towards CNS

Question 10

Where does motor (efferent) signals go?

Answer 10

Away from CNS, innervates muscles and glands

Question 11

What are the two regions of PNS?

Answer 11

Somatic body region and visceral body region

Question 12

What are the 4 main subdivisons of PNS?

Answer 12

Somatic sensory, visceral sensory, somatic motor, visceral motor

Question 13

What does somatic sensory do?

Answer 13

Information taking from skeletal muscles

Question 14

What does visceral sensory do?

Answer 14

Information taking from cardiac muscle, smooth muscle, or glands

Question 15

What does somatic motor do?

Answer 15

Information going back to the skeletal muscle

Question 16

What does the visceral motor do?

Answer 16

Information going back to cardiac muscle, smooth muscle, or glands

Question 17

What does afferent (sensory) division do?

Answer 17

Transmits impulses from receptors to the CNS

Question 18

What do somatic afferent fibers do?

Answer 18

Carry impulses from skin, skeletal
muscles, and joints

Question 19

What do visceral afferent fiber do?

Answer 19

Transmit impulses from smooth muscles, cardiac muscles, or glands

Question 20

What do motor (efferent) division do?

Answer 20

Transmits impulses from the CNS to effector organs

Question 21

What does autonomic nervous system do?

Answer 21

Regulates smooth muscle, cardiac muscle, glands

Question 22

What does somatic nervous system do?

Answer 22

Provides conscious control of skeletal muscles

Question 23

What are proprioceptive senses (cranial nerves)?

Answer 23

Knowing where all parts of the body are at all times

Question 24

What is sympathetic nervous system?

Answer 24

Fight or Flight, stressor occurring, catabolic (expend energy)

Question 25

What is parasympathetic nervous system?

Answer 25

Rest and Digest, maintaining homeostasis

Question 26

What are the effects of sympathetic activation?

Answer 26

Generalized response, increased in alertness, energy, cardiovascular, respiratory, muscle tone

Question 27

Effects of parasympathetic activation?

Answer 27

Relaxation, food processing, energy absorption, brief effects at specific sites