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DSF > DSF Nervous System > Flashcards

DSF Nervous System Flashcards

1
Q

Nerve fiber

A

individual axon of a nerve cell

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2
Q

Nerve

A

bundles of axons in the PNS

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3
Q

Tract

A

bundles of axons in the CNS

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4
Q

Ganglion

A

a collection of neuron cell bodies in the PNS

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5
Q

Nucleus

A

a collection of neuron cell bodies in the CNS

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6
Q

Gray matter

A

area of the CNS primarily containing neuronal cell bodies

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7
Q

White matter

A

area of the CNS containing primarily axons

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8
Q

Oligodendrocytes

A

glial cells (non-neuronal) of CNS:
support, nourish, insulate
involved in myelination

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9
Q

Cranial nerves

A 
12 pairs
primarily innervate head & neck
(10 also thorax & abd)
all are somatic nerves 
some (3, 9, 10) contain autonomic
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10
Q

Anterior (ventral) ramus

A

Innervates the muscles of the anterior & lateral trunk, upper & lower limbs & overlying skin
Stay as separate nerves to innervate trunk (intercostal nerves)
Form plexuses to supply limbs)

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11
Q

Posterior (dorsal) ramus

A

Innervates joints of the vertebral column, deep muscles of the back, & overlying skin
Stay as separate nerves

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12
Q

Anterior rami of spinal nerves

A 
Cervical plexus (C1-C4)
Brachial plexus (C5-T1)
Intercostal nerves (T1-T12)
Lumbar plexus (T12-L4)
Sacral plexus (L4-S3)
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13
Q

Cervical plexus

A

Anterior rami
C1-C4
Innervates muscles & skin of the neck & posterior scalp

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14
Q

Brachial plexus

A

Anterior rami
(C5-T1)
Innervates muscles & skin of the upper limb

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15
Q

Intercostal nerves

A

Anterior rami
(T1-T12)
Innervates muscles & skin of the anterior & lateral thoracic & abd walls

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16
Q

Lumbar plexus

A

Anterior rami
T12-L4
Innervates muscles & skin of the lower anterior abd wall & anterior thigh

17
Q

Sacral plexus

A

Anterior rami
L4-S3
Innervates muscles & skin of the gluteal region, posterior thigh, leg & foot

18
Q

Dermatome

A

Map of segmental sensory innervation
Each single spinal cord segment is responsible for cutaneous innervation of a particular region
T4 - nipples
T10 - umbilicus

19
Q

Rhizotomy

A

Surgical procedure to sever nerve roots in the spinal cord

Can relieve pain (posterior) / spastic paralysis (anterior)

DSF (18 decks)

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