The Peripheral Nervous System Flashcards

1
Q

The peripheral nervous system

A

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

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2
Q

Peripheral nervous system structure are what?

A

Outside the brain and spinal cord

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3
Q

What do nerves allow the CNS to do?

A

Receive information and take action

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4
Q

Functional components of the PNS

A

Sensory inputs and motor output either somatic or visceral

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5
Q

What is somatic?

A

Skeletal muscles

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6
Q

What is visceral?

A

ANS; Smooth muscles, cardiac muscles, glands

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7
Q

What are general sensory inputs?

A

touch, pain, pressure, temperature

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8
Q

What are special sensory inputs?

A

hearing, vision, taste, smell

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9
Q

Where does sensory (afferent) signals go?

A

Towards CNS

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10
Q

Where does motor (efferent) signals go?

A

Away from CNS, innervates muscles and glands

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11
Q

What are the two regions of PNS?

A

Somatic body region and visceral body region

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12
Q

What are the 4 main subdivisons of PNS?

A

Somatic sensory, visceral sensory, somatic motor, visceral motor

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13
Q

What does somatic sensory do?

A

Information taking from skeletal muscles

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14
Q

What does visceral sensory do?

A

Information taking from cardiac muscle, smooth muscle, or glands

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15
Q

What does somatic motor do?

A

Information going back to the skeletal muscle

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16
Q

What does the visceral motor do?

A

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

17
Q

What does afferent (sensory) division do?

A

Transmits impulses from receptors to the CNS

18
Q

What do somatic afferent fibers do?

A

Carry impulses from skin, skeletal
muscles, and joints

19
Q

What do visceral afferent fiber do?

A

Transmit impulses from smooth muscles, cardiac muscles, or glands

20
Q

What do motor (efferent) division do?

A

Transmits impulses from the CNS to effector organs

21
Q

What does autonomic nervous system do?

A

Regulates smooth muscle, cardiac muscle, glands

22
Q

What does somatic nervous system do?

A

Provides conscious control of skeletal muscles

23
Q

What are proprioceptive senses (cranial nerves)?

A

Knowing where all parts of the body are at all times

24
Q

What is sympathetic nervous system?

A

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

25
What is parasympathetic nervous system?
Rest and Digest, maintaining homeostasis
26
What are the effects of sympathetic activation?
Generalized response, increased in alertness, energy, cardiovascular, respiratory, muscle tone
27
Effects of parasympathetic activation?
Relaxation, food processing, energy absorption, brief effects at specific sites