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28 Cards in this Set
- Front
- Back
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place where two roots form to make spinal nerve
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Intervertebral Foramen
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wraps around the entire nerve
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Epineurium
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wraps around each individual fascicle; each fascicle contains many axons bound together
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Perineurium
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wraps around each axon
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Endoneurium
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Epi--nerve
Peri--fascicle Endo--axon |
Protective coverings of spinal cord
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What are the 3 groups of the Thoracic nerves?
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1. T2
2. T3-T6 3. T7-T12 |
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Intervates intercostal space (b/t 2nd and 3rd rib) and innervates axilla (armpit) and posterior and medial arm. Cutaneous
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T2
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Innervate skin and muscle of anterior lateral chest wall; also intercostal space
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T3-T6
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Anterior abdominal wall; also intercostal space
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T7-T12
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complex, gives rise to nerve that intervates shoulder and upper thorax and entire upper extremities (anterior and posterior)
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Brachial Plexus
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What are the primary contributors of the bracial plexus?
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C4 (partially)
*C5--T1 T2 (partially) |
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What are the terminal branches that form the "M" of the brachial plexus?
"Primary Landmark" |
1. Musculocutaneous
2. Median 3. Ulnar |
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What are the three cords of the brachial plexus? Responsible for giving off terminal branches
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1. Lateral Cord
2. Posterior Cord 3. Medial Cord |
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The M is only formed by the ____ and ____ cords.
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Lateral and medial cord
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innervates muscles that flex the forearm. comes off of lateral cord
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Musculocutaneous
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formed by the lateral and medial cord, runs into anterior forearm and innervates wrists and hand flexors; intrinsic myo of hand
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Median nerve
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comes from medial cord; funny bone--innervates flexor muscles of wrist and fingers (anterior forearm)
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Ulnar nerve
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innervates the extensors of the wrist and fingers
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Radial nerve
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comes off of posterior cord: innervates deltoid
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Axillary nerve
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innervates muscles of anterior forearm
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Brachial nerve
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L1-L5
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Lumbar Plexus
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L2-L4
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Femoral Nerve
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innervates quadriceps muscles on anterior thigh to extend knee, flex hip
-If hit, feel numbless down thigh |
Femoral Nerve
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L4-S3 primarily
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Sacral Plexus
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initally formed by 2 distinct branches: tibial and common fibular; runs down though thigh, innervates nearly all musculature of leg and foot
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Sciatic nerve
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Damage to the sciatic nerve can result in inability to _______. Foot will drag across ground or will have to pick it up really high so toe doesn't hit the ground when walking--What is this called?
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Dorsal Flex
-Foot Drop |
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Radial nerve impairment (innervates muscles of posterior forearm)
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Wrist Drop
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Damage to medial nerve is called...
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Carpal Tunnel Syndrome
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