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+ CAPS 391 > Intro to Nervous System > Flashcards

Intro to Nervous System Flashcards

1
Q

What is the nervous system responsible for?

A

receiving and processing impulses from the external or internal environments, and initiating an appropriate response

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2
Q

What are the 2 parts of the nervous system (structural)?

A

central nervous system (CNS)

peripheral nervous system (PNS)

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3
Q

What are the 3 parts of the nervous system (functional)?

A

somatic nervous system
visceral (autonomic) nervous system
enteric nervous system

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4
Q

What do sensory/afferent nerve fibers do?

A

carry signals towards CNS

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5
Q

What do motor/efferent nerve fibers do?

A

carry signals away from CNS

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6
Q

Describe the overlap between the structural and functional classifications of the nervous system.

A

parts of somatic and visceral (autonomic) systems are contained within CNS, and other parts are included in the PNS

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7
Q

What structures does the CNS consist of?

A

brain and spinal cord

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8
Q

What is the function of the CNS?

A

integrative and control centres

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9
Q

What structures does the PNS consist of?

A

cranial nerves and spinal nerves

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10
Q

What is the function of the PNS?

A

communication lines between CNS and rest of body

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11
Q

What are the 2 divisions of the PNS?

A

sensory (afferent) division

motor (efferent) division

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12
Q

What structures does the sensory (afferent) division of the PNS consist of?

A

somatic and visceral sensory nerve fibers

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13
Q

What is the function of the sensory (afferent) division of the PNS?

A

conducts impulses from receptors to CNS

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14
Q

What structures does the motor (efferent) division of the PNS consist of?

A

motor nerve fibers

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15
Q

What is the function of the motor (efferent) division of the PNS?

A

conducts impulses from CNS to effectors (muscles and glands)

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16
Q

What are the 2 parts of the motor (efferent) division of the PNS?

A

somatic nervous system

autonomic nervous system (ANS)

17
Q

What structures does the somatic nervous system consist of?

A

somatic motor (voluntary)

18
Q

What is the function of the somatic nervous system?

A

conducts impulses from CNS to skeletal muscles

19
Q

What structures does the autonomic nervous system consist of?

A

visceral motor (involuntary)

20
Q

What is the function of the autonomic nervous system?

A

conducts impulses from CNS to cardiac muscles, smooth muscles, and glands

21
Q

What are the 2 divisions of the autonomic nervous system (ANS)?

A

sympathetic division

parasympathetic division

22
Q

What is the function of the sympathetic division of the ANS?

A

mobilizes body systems during activity

23
Q

What are the functions of the parasympathetic division of the ANS? (2)

A
  • conserves energy

- promotes housekeeping functions during rest

24
Q

Where do sensory/afferent nerve fibers carry signals? (3)

A

from

  • sensory (afferent) division of PNS
  • skin
  • stomach

→ CNS

25
Q

What are somatic sensory fibers?

A

sensory/afferent nerve fibers that carry signal from skin to CNS

26
Q

What are visceral sensory fibers?

A

sensory/afferent nerve fibers that carry signal from stomach to CNS

27
Q

Where do motor/efferent nerve fibers carry signals?

A

from CNS →

  • PNS (and through all parts/divisions)
  • skeletal muscle
  • heart
  • bladder
28
Q

What are motor fibers of the somatic nervous system?

A

motor/efferent nerve fibers that carry signal from CNS to skeletal muscle

29
Q

What are sympathetic motor fibers of the ANS?

A

motor/efferent nerve fibers that carry signal from CNS to heart

30
Q

What are parasympathetic motor fibers of the ANS?

A

motor/efferent nerve fibers that carry signal from CNS to bladder

+ CAPS 391 (28 decks)

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