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27 Cards in this Set
- Front
- Back
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The main branches of the lateral cord are |
the musculocutaneous nerve and a contribution to the median nerve |
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The main branches of the medial cord are |
the ulnar nerve and a contribution to the median nerve, as well as the medial cutaneous nerves of the forearm and arm |
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The main branches of the posterior cord are |
the axillary nerve and the radial nerve |
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Dorsal scapular nerve branches off from |
C4, C5 nerve root and participates in innervation of rhomboid muscles |
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Phrenic nerve branches off from |
C3,4,5, "keeps the diaphragm alive" |
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Long thoracic nerve branches off from |
C5-C7; innervates the serratus anterior |
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Lumbar plexus is comprised of which nerve roots? |
L1-L3 and most of the L4 |
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Iliopsoas is innervated by? |
L2-L4; femoral nerve |
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Adductor longus is innervated by? |
L2-L4; obturator nerve |
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Vastus medialis is innervated by? |
L2-L4; femoral nerve |
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Vastus lateralisis innervated by? |
L2-L4; femoral nerve |
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Rectus femoris is innervated by? |
L2-L4; femoral nerve |
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Gluteus medius is innervated by? |
L4, L5, S1; superior gluteal nerve |
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Gluteus maximus is innervated by? |
L5, S1, S2; inferior gluteal nerve |
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Tensor fasciae lataeis innervated by? |
L4-L5, S1; superior gluteal |
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Biceps femoris (short head)is innervated by? |
L5, S1-S2; sciatic (peroneal division) nerve |
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Biceps femoris (long head)is innervated by? |
L5, S1, S2; sciatic (tibial division) nerve |
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Tibialis anterioris innervated by? |
L4, L5; deep peroneal nerve |
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Medial gastrocnemiusis innervated by? |
S1, S2; tibial nerve |
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Peroneus longusis innervated by? |
L5, S1; superficial peroneal |
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Tibialis posterioris innervated by? |
L5, S1; tibial |
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POeroneus tertiusis innervated by? |
L5, S1; deep peroneal |
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Abductor hallucisis innervated by? |
S1, S2; tibial (medial plantar) |
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What should be assessed to distinguish whether a foot drop is related to an L5 radiculopathy versus a peroneal neuropathy? |
Inversion (posterior tibialis) should be assessed; weakness of this muscle (in addition to the anterior tibialis and peronei) suggests an L5 nerve root lesion |
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Which nerve roots form the brachial plexus? |
C5-T1 |
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Normal muscle consists of type 1 and type 2 fibers, iontermixed randomly. What do they depend on? |
Type 1 - primarily oxidative metabolism, and are considered slow twitch Type 2 - fast twitch fibers; type 2A function well in both anaerobic and aerobic states, whereas type 2B fibers function most efficiently in an anaerobic state |
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What is dystrophin? |
A protein located on the cytoplasmic side of the muscle membrane and is important for stabilization of the membrane during contraction |
