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Anaphy Midterm > Spinal Nerves > Flashcards

Spinal Nerves Flashcards

1
Q

Networks of nerves serving motor and sensory needs of the limbs.

A

Plexus

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2
Q

Plexuses form from the ventral rami of spinal nerves of what regions?

A

Cervical, lumbar, and sacral regions.

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3
Q

What are the four plexuses?

A

Cervical, brachial, lumbar, and sacral

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4
Q

What is the origin of the cervical plexus?

A

C1-C5

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5
Q

What is the origin of the brachial plexus?

A

C5-C8; T1

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6
Q

What is the origin of the lumbar plexus?

A

L1-L4

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7
Q

What is the origin of the sacral plexus?

A

L4-L5; S1-S4

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8
Q

This important nerve of the cervical plexus serves the diaphragm, skin and muscles of shoulder and neck.

A

Phrenic

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9
Q

What are the important nerves of the brachial plexus?

A

Axillary, radial, median, musculocutaneous, ulnar

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10
Q

What are the important nerves of the lumbar plexus?

A

Femoral (including lateral and anterior cutaneous branches) and obturator

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11
Q

What are the important nerves of the sacral plexus?

A

Sciatic, common fibular (superior and deep branching), tibial (sural and plantar branches), superior and inferior gluteal

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12
Q

This brachial nerve serves the deltoid muscle and skin of shoulder, muscles and skin of superior thorax.

A

Axillary

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13
Q

This brachial nerve serves the triceps and extensor muscles of the forearm, skin of posterior upper limb.

A

Radial

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14
Q

This brachial nerve serves the flexor muscles and skin of forearm ad some muscles of hand.

A

Median

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15
Q

This brachial nerve serves the flexor muscles of arm, and skin of lateral forearm.

A

Musculocutaneous

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16
Q

This brachial nerve serves some flexor muscles of forearm, wrist and many hand muscles, skin of hand.

A

Ulnar

17
Q

This lumbar nerve serves the lower abdomen, anterior and medial thigh muscles, and skin of anteromedial leg and thigh.

A

Femoral

18
Q

This lumbar nerve serves the adductor muscles of medial thigh and small hip muscles, skin of medial thigh and hip part.

A

Obturator

19
Q

This nerve is the largest nerve in the body.

A

Sciatic

20
Q

The sciatic nerve splits into what two nerves?

A

Common fibular and tibial

21
Q

This sacral nerve serves the lower trunk and posterior surface of thigh.

A

Sciatic

22
Q

This sacral nerve serves the lateral aspect of the leg and foot.

A

Common fibular

23
Q

This sacral nerve serves the posterior aspect of the leg and foot.

A

Tibial

24
Q

This sacral nerve serves the gluteal muscles of hip.

A

Superior and inferior gluteal

25
Q

Damage to this nerve results in respiratory paralysis (death if not treated promptly).

A

Phrenic

26
Q

Damage to this nerve results in paralysis and atrophy of deltoid muscle.

A

Axillary

27
Q

Damage to this nerve results in wristdrop (inability to extend hand at wrist).

A

Radial

28
Q

Damage to this nerve results in decreased ability to flex and abduct hand & flex and abduct thumb and index finger (inability to pick up small objects).

A

Median

29
Q

Damage to this nerve results in decreased ability to flex forearm on arm.

A

Musculocutaneous

30
Q

Damage to this nerve results in clawhand (inability to spread fingers apart).

A

Ulnar

31
Q

Damage to this nerve results in inability to extend leg & flex hip (loss of cutaneous sensation).

A

Femoral

32
Q

Damage to this nerve results in inability to adduct thigh.

A

Obturator

33
Q

Damage to this nerve results in inability to extend hip & flex knee; sciatica.

A

Sciatic

34
Q

Damage to this nerve results in footdrop (inability to dorsiflex foot).

A

Common fibular

35
Q

Damage to this nerve results in inability to plantar flex and invert foot; shuffling gait.

A

Tibial

36
Q

Damage to this nerve results in inability to hip (maximus) or abduct & medially rotate thigh (medius).

A

Superior and inferior gluteal

Anaphy Midterm (16 decks)

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