PERIPHERAL NERVOUS SYSTEM Flashcards

1
Q

bundles of neurons found outside the CNS

A

Nerves

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2
Q

is a connective tissue sheath that surround each fiber

A

Endoneurium

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3
Q

wraps groups of fibers bound into a fascicle

A

Perineurium

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4
Q

binds groups of fascicles

A

Epineurium

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5
Q

3 kinds of nerves based on structure

A

Sensory, motor, and mixed nerves

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6
Q

Carry impulse towards the CNS. Contain axons from sensory neurons

A

Sensory (afferent) nerves

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7
Q

Carry impulses away from the CNS

A

Motor (efferent) nerves

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8
Q

Contain both sensory and motor fibers

A

Mixed nerves

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9
Q

name the nerve: smell

A

Olfactory

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10
Q

name the nerve: vision

A

Optic

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11
Q

name the nerve: motion of eyeballs and dilation of pupils

A

Oculomotor

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12
Q

name the nerve: detects touch on face and controls the muscles of mastication

A

Trigeminal

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13
Q

name the nerve: activates facial muscles and controls the anterior third

A

Facial

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14
Q

name the nerve: inner ear, hearing, and balance

A

Vestibulocochlear

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15
Q

name the nerve: pharynx, swallowing, and posterior third

A

Glossopharyngeal

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16
Q

name the nerve: pharynx, larynx, abdominal, thoracic region, and control of me digestive tract

A

Vagus

17
Q

name the nerve: control the muscles of the neck (sternocleidomastoid and trapezius)

A

Accessory

18
Q

name the nerve: movement of the tongue

A

Hypoglossal

19
Q

surrounds the central canal, which is filled with cerebrospinal fluid

A

Gray matter

20
Q

house interneurons. Receive information from sensory neurons in the dorsal root; cell bodies housed in dorsal root ganglion

A

Dorsal (posterior) horns

21
Q

house motor neurons of the somatic (voluntary) nervous system. Send information out ventral root

A

Ventral (anterior) horns

22
Q

Network of nerves formed from the ventral rami of the cervical, lumbar and sacral regions. Serves as the sensory and motor needs of the limbs

A

Plexus

23
Q

Axons extends to skeletal muscles that are served and motor neuron cell bodies originate inside the CNS

A

Somatic nervous system

24
Q

2 arms of the autonomic nervous system

A

sympathetic and parasympathetic division

25
Q

cell body lies within the CNS. its axons synapses with the second motor neuron in the terminal ganglia

A

Preganglionic neuron

26
Q

preganglionic neurons originate in:
- Cranial nerves III, VII, IX, and X
- S2 through S4 regions of the spinal cord

A

Parasympathetic

27
Q

preganglionic neuron originate from T1 through L2

A

Sympathetic

28
Q

axon extends to the visceral organs

A

Postganglionic neuron