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Exam 1: DHHD 5002 > Johnson 1 > Flashcards

Johnson 1 Flashcards

1
Q

CNS is composed of…

A

Brain and Spinal Cord

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2
Q

Convey information from receptors to the central nervous system

A

Afferent Fibers

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3
Q

Convey information from the central nervous system to effectors (muscles and glands)

A

Efferent Fibers

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4
Q

Efferent fibers go to…

A
  • Somatic Nervous System

- Autonomic Nervous System

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5
Q

Conveys information

from the CNS to Skeletal Muscles

A

Somatic Nervous System

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6
Q

Conveys information from the CNS to smooth muscle, cardiac muscle, and glands.

A

Autonomic Nervous System

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7
Q

Autonomic Nervous System consists of…

A
  • Sympathetic

- Parasympathetic

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8
Q

(Thoraco-lumbar) Nervous System

A

Sympathetic

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9
Q

(Cranio-sacral) Nervous System

A

Parasympathetic

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10
Q

There are ___ pairs of spinal nerves and ___ pairs of cranial nerves.

A
  • 31

- 12

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11
Q

The functional unit of the nervous system is the _____.

A

Neuron

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12
Q

A _____ is the nerve cell body and all of its processes.

A

Neuron

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13
Q

A ______ consists of an axon covered by a sheath (neurolemma). Axons may be myelinated or unmyelinated. In the peripheral nervous system, the sheaths are formed by Schwann cells.

A

Nerve fiber

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14
Q

A _____ is a functional contact between neurons.

A

Synapse

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15
Q

In a ______, a neurotransmitter is released from the axonal ending of one neuron into a cleft and acts on receptors on the membrane surface of the second neuron.

A

Synapse

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16
Q

A collection of nerve cell bodies WITHIN the CNS

A

Nucleus

17
Q

A collection of nerve cell bodies OUTSIDE the CNS (i.e., in the PNS)

A

Ganglion

18
Q

A _____ is a bundle of nerve fibers held together by connective tissue and located outside the CNS. It may contain more than one type of nerve fiber, and a nerve fiber may lie in several different nerves throughout its course.

A

Nerve

19
Q

Can a nerve fiber travel in more than one nerve?

A

Yes

20
Q

There are only ____ basic types of nerve fibers in the peripheral nervous system.

A

four

21
Q

Name the four basic types of nerve fibers in the PNS.

A

Afferent: afferent
Efferent: efferent to skeletal muscle, preganglionic efferent (autonomic), postganglionic efferent (autonomic)

22
Q

Neurons of ANS innervate:

A
  1. All smooth muscle
  2. All cardiac muscle
  3. All glands
23
Q

Primarily the domain of cranial nerves

A

Head

24
Q

Domain of spinal nerves; From skin externally to layer lining body wall internally (includes extremities)

A

Body wall

25
Q

a. Thorax
b. Abdomen
c. Pelvis

A

Viscera

26
Q

31 pairs of spinal nerves

A 
Cervical: 8 pairs 
Thoracic: 12 pairs 
Lumbar: 5 pairs 
Sacral: 5 pairs 
Coccygeal: 1 pair
27
Q

Which fibers are necessary for the body wall and extremities?

A
  • Afferent fiber
  • Efferent to skeletal muscle
  • Preganglionic and postganglionic efferent fibers
28
Q

For the body wall and extremities, where is the location of the afferent fibers?

A

Dorsal root ganglion

29
Q

For the body wall and extremities, where is the location of the efferent to skeletal muscle fibers?

A

Ventral gray horn

30
Q

For the body wall and extremities, where is the location of the preganglionic efferent fibers?

A

Intermediolateral cell column

31
Q

For the body wall and extremities, where is the location of the postganglionic efferent fibers?

A

Sympathetic trunk

32
Q

Nerve fiber types found in NERVES supplying a skeletal muscle

A
  1. Efferent to skeletal muscle
  2. Afferent
  3. Postganglionic efferent
33
Q

Nerve fiber types found in NERVES supplying skin (cutaneous) or a joint (articular)

A
  1. Afferent

2. Postganglionic efferent

34
Q

A ______ is the area of skin supplied by afferent fibers in the dorsal root ganglion of a single spinal nerve

A

Dermatome

35
Q

In many regions of the body, major branches of adjacent ventral primary rami join in networks called ______. Note that dorsal primary rami always remain segmental.

A

plexuses

Exam 1: DHHD 5002 (23 decks)

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