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39 Cards in this Set
- Front
- Back
which nerves innervate the diaphragm?
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C3
C4 C5 (primarily) |
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How many roots does the brachial plexus have and what are they?
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C5
C6 C7 C8 T1 |
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How many trunks does the brachial plexus have? What are they called? Which roots contribute to them?
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3 trunks
Superior/Upper: C5 and C6 Middle: C7. Inferior/Lower: C8 and T1 |
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How many divisions are there in the brachial plexus?
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6 divisions:
3 anterior/ventral 3 posterior/dorsal. |
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How many cords are there in the brachial plexus? What are their contributing nerve roots?
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3 cords.
Lateral (C5-7). Posterior (C5-8 and T1) Medial (C7 and T1) |
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Which nerve roots contribute to the musculocutaneous nerve?
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C5
C6 C7 |
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Which nerve roots contribute to the axillary nerve?
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C5
C6 |
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Which nerve roots contribute to the radial nerve?
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C5
C6 C7 C8 T1 (all 5 roots) |
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Which nerve roots contribute to the median nerve?
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C5 C6 C7 C8 (T1 contribution is inconsistent)
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Which nerve roots contribute to the ulnar nerve?
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C8
T1 |
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musculocutaneous nerve: motor? sensory?
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Motor: biceps muscle (flex forearm)
Sensory: Lateral mid-forearm |
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Axillary nerve: motor? sensory?
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motor: deltoid muscle/flap arm ("do the chicken")
sensory: upper lateral arm |
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Radial nerve: motor? sensory?
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motor: triceps (extend forearm), supinator and extensors of the forearm (including wrist and elbow)
sensory: posterior arm and forearm, thumb and dorsal surface of hand |
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Nerve that goes behind the humerus (is well protected)?
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Radial nerve.
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Median nerve: motor? sensory?
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motor: flexion of the wrist is primary motor sign. (also pronator muscles of forearm)
sensory: palmar surface of hand, index and middle fingers |
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Which nerves innervate the forearm?
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Musculocutaneous
Radial Median |
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Which sensory nerve(s) innervate the hand/fingers (not including wrist/forearm)?
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Median (palmar surface of hand, index and middle fingers)
Ulnar (little finger and ring finger) Radial (thumb and dorsal surface of hand) |
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Ulnar nerve: motor? sensory?
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motor: flexor carpi ulnaris (abduct fingers)
sensory: little finger and medial ring finger |
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Which motor nerve(s) innervate(s) the hand/fingers (not including wrist/forearm)?
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ulnar (abduct fingers)
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primary nerves of the lumbar plexus?
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L2
L3 L4 |
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Lateral femoral cutaneous nerve contributors
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L2
L3 |
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Femoral nerve contributors
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L2
L3 L4 |
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Obturator nerve contributors
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L2
L3 L4 |
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Sciatic nerve contributors
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L4
L5 S1 S2 S3 |
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Femoral nerve splits to become _____ nerve
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Saphenous
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Sciatic nerve splits to become ____ and ____ nerves
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Common peroneal
Tibial |
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Common peroneal and tibial nerves contribute to this nerve
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sural
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besides contributing to sural nerve, common peroneal splits to form these nerves
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superficial peroneal
deep peroneal |
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contributors of sciatic plexus
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L4
L5 S1 S2 S3 |
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which nerve of the lower body has sensory function only?
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lateral femoral cutaneous
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Lateral femoral cutaneous: sensory? motor?
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sensory: skin over anterolateral aspect of the thigh
motor: no motor innervation |
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Femoral nerve: location? sensory? motor?
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1-2 cm lateral to the femoral artery (NAVy from lateral aspect to medial)
sensory: anterior thigh and knee (terminates as saphenous nerve, which innervates the medial side of the calf down to the ankle) motor: extension of the lower extremity (use of quadriceps mucle) |
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Obturator nerve: sensory? motor?
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sensory: lower portion of the inner thigh
motor: adductor muscles of leg |
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Sciatic nerve: sensory? motor?
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(sciatic splits to tibial and peroneal)
sensory: posterior aspect of thigh; entire foot motor: "tippy toes" (tibial) pull toes up (peroneal) |
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Tibial nerve motor function?
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"tippy toes"/"push down on the gas"
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what might you see if the peroneal nerve is injured?
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foot drop
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Peroneal nerve motor function?
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pull toes up
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what are the five terminal nerves of the arm?
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musculocutaneous
axillary radial median ulnar |
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wrist: nerve for flexion? nerve for extension?
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flexion of wrist: median
extension of wrist: radial |