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| Pregunta | Respuesta |
| Spinal segments of Musculocutaneous Nerve. | C5,6,7 |
| Spinal segments of Axillary nerve. | C5,6 |
| Spinal segments of Radial nerve. | C5 - T1 |
| Spinal segments of Median nerve. | C5 - T1 |
| Spinal segments of Ulnar nerve. | C7, 8 and T1. |
| Nerves innervated by C5 | Musculocutaneous, axillary, radial, median. (no ulnar) |
| Nerves innervated by C6. | Musculocutaneous, axillary, radial, median. |
| Nerves innervated by C7. | Musculocutaneous, radial, median, ulnar. (no axillary) |
| Nerves innervated by C8. | Radial, median, ulnar. (no musculocutaneous or axillary) |
| Nerves innervated by T1. | Radial, median and ulnar. (no musculocutaneous or axillary) |
| Muscles innervated by musculocutaneous nerve: | coracobrachials, biceps brachii, brachialis. |
| Muscles innervated by axillary nerve: | daltoids, teres minor. |
| Muscles innervated by radial nerve: | triceps brachii, anconeous, brachioradialis, supinator, wrist/finger/thumb extensors. |
| Muscles innervated by median nerve: | pronators, wrist and finger flexors on the radial side, most thumb muscles. |
| Muscles innervated by ulnar nerve: | Flexor carpi ulnaris, flexor digitorum profundus (medial half), interossei, 4th and 5th lumbricals. Adductor pollicis brevis. |
| What nerve is involved if the patient has a loss of motor function in forearm flexion when supinated, and weakened supination? | Musculocutaneous nerve. |
| What nerve is involved if the patient has a loss of motor function in shoulder abduction, weakened external rotation? | Axillary nerve. |
| What nerve is involved if the patient has a loss of motor function in elbow/wrist/finger and thumb extension? | Radial nerve. |
| What nerve is involved if the patient has a loss of motor function in forearm pronation, thumb opposition/flexion/abduction? | Median nerve. |
| What nerve is involved if the patient has a loss of motor function in wrist ulnar deviation, weakened wrist and finger flexion, weakened 4th and 5th finger flexion, loss of thumb adduction, loss of most intrinsics? | Ulnar nerve. |
| Sensory distribution of musculocutaneous nerve. | anterolateral forearm. |
| Sensory distribution of axillary nerve. | lateral arm over lower portion of deltoid. |
| Sensory distribution of radial nerve. | posterior arm/forearm, radial side of posterior hand. |
| Sensory distribution of median nerve. | the palmar aspect of the thumb, 2nd, 3rd and radial half or 4th fingers. |
| Sensory distribution of the ulnar nerve. | medial of 4th finger and 5th finger. |
| Segmentation of sciatic nerve | L4, L5, S1, S2, S3 |
| Segmentation of femoral nerve | L2, 3, 4 |
| Segmentation of tibial nerve | L4, L5, S1, S2, S3 |
| Segmentation of superficial peroneal nerve | L5, S1, S2 |
| Segmentation of deep peroneal nerve | L4, L5 |
| Which nerves involve L2? | Femoral only |
| Which nerves involve L3? | Femoral only |
| Which nerves involve L4? | Sciatic, tibial, femoral and deep peroneal |
| Which nerves involve L5? | Sciatic, Tibial, Deep and Superficial peroneal |
| Which nerves involve S1? | Sciatic, tibial, superficial peroneal |
| Which nerves involve S2? | Sciatic, tibial, superficial peroneal |
| Which nerves involve S3? | Sciatic and tibial |
| Muscle innervation of the sciatic nerve. | hamstrings, adductor magnus |
| Muscle innervation of the tibial nerve. | Gastrocs, soleus, plataris, popliteus, tibialis posterior |
| Muscle innervation of the femoral nerve | satorius, quads, iliacus, pectineus. |
| Muscle innervation of the superficial peroneal nerve. | Peroneal longus and brevis. |
| Muscle innervation of the deep peroneal nerve. | tib ant, extensor hallucis longus and brevis, extensor digitorum lungus and brevis, peroneal tertius |
| What are the motor features of paralysis of the sciatic nerve? | loss of knee flexion, weak hip adduction, loss of ALL MUSCLES DISTAL TO THE KNEE (tibial and peroneal) |
| What are the motor features of paralysis of the Tibial nerve? | loss of plantarflexion and knee flexion. |
| What are the motor features of paralysis of the femoral nerve? | loss of hip flexion and knee extension. |
| What are the motor features of paralysis of the superficial peroneal nerve? | Loss of eversion. |
| What are the motor features of paralysis of the deep peroneal nerve? | loss of dorsiflexion, weakness in dorsal foot intrinsics. |
| What is the sensory distribution of the sciatic nerve? | Sum of tibial and peroneal nerves. |
| What is the sensory distribution of the femoral nerve? | middle anterior thigh and medial thigh proximal to the knee. |
| What is the sensory distribution of the tibial nerve? | posterior/lateral calf, ankle, and heel |
| What is the sensory distribution of the superficial peroneal nerve? | anterior/lateral leg and ankle, most of the dorsum of feet. |
| What is the sensory distribution of the deep peroneal nerve? | web space between first and second toes on the dorsum of the feet. |
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