A. Anatomy brachial plexus – Flashcards
Unlock all answers in this set
Unlock answersquestion
| in the lateral protrusions, the thumbs are oriented in which direction |
answer
| superiorally (cranially) |
question
| limb muscle masses (2) |
answer
| posterior compartment muscles and anterior compartment muscles |
question
| brachial plexus innervation |
answer
| anterior rami C5-T1 |
question
| irritation of diaphragm shows up where? |
answer
| radially in C3,4,5 sections of skin on arm - mid forearm to lower neck |
question
| dermatome innervation roughly corresponds to |
answer
| myotome innervation |
question
| myotome / dermatome = |
answer
| muscle mass / area of skin innervated by a single spinal nerve |
question
| somite = |
answer
| myotome, dermatome, and one other thing |
question
| what does the dorsal ramus innervate |
answer
| epaxial muscles (postural muscles of back) |
question
| glenohumeral joint |
answer
question
| order of brachial plexus |
answer
| RTDCB roots trunks divisions cords branches |
question
| 3 trunks |
answer
| superior, medial, inferior |
question
| 3 pair divisions |
answer
| anterior and posterior of each trunk |
question
| 3 cords |
answer
| lateral, posterior, medial |
question
| terminal branches |
answer
| musculocutaneous, axillary, radial, median, ulnar |
question
| m.c. innervation |
answer
| c5-c7 |
question
| axillary innervation |
answer
| c5,c6 |
question
| radial innervation |
answer
| c5-t1 (all!) |
question
| median innervation |
answer
| c6-t1 |
question
| ulnar innervation |
answer
| c8,t1 |
question
| long thoracic nerve (location, what it innervates, and motor or sensory = LIMS) |
answer
| comes off c5-c7 roots, serratus anterior, motor only |
question
| dorsal scapular nerve LIMS |
answer
| comes off c5 root, rhomboids, both |
question
| nerve to subclavius LIMS |
answer
| comes off superior trunk, subclavius, both |
question
| suprascapular nerve |
answer
| comes off superior trunk, infraspinatus and supraspinatus, motor only |
question
| lateral pectoral nerve LIMS |
answer
| comes off lateral cord, pec. major, motor only |
question
| medial pectoral nerve LIMS |
answer
| comes off anterior division of inferior trunk, pec. minor (and major), motor only |
question
| medial cutaneous brachial nerve |
answer
| medial cord, lower arm sensory |
question
| medial cutaneous antebrachial nerve |
answer
| medial cord, upper arm sensory |
question
| upper subscapular nerve |
answer
| posterior cord, superior subscapularis, motor |
question
| thoracodorsal nerve |
answer
| posterior cord, latissimus dorsi, motor |
question
| lower subscapular nerve |
answer
| posterior cord, inferior subscapularis and teres major, motor |
question
| for brachial plexus, lateral = |
answer
| more cranial, and medial = more caudal |
question
| anterior division nerves |
answer
| m.c., median, ulnar. |
question
| posterior division nerves |
answer
| axillary, radial |
question
| axillary innervates |
answer
| deltoids |
question
| anterior and posterior compartments are |
answer
| REAL, linked by development and bound by fascia |
question
| m.c. innervates |
answer
| brachialis, coracobrachialis, biceps (flexors) |
question
| radial nerve innervates (2) |
answer
| triceps (extensors), anconeusa |
question
| median innervates |
answer
| thumb and corresponding forearm area |
question
| ulnar innervates |
answer
| fingers other than thumb, opposite forearm area to radial area |
question
| hyperextension at the neck = |
answer
| upper brachial plexus injury |
question
| "waiter's tip" |
answer
| erb-duchenne palsy = upper brachial plexus injury. loss of brachial flexors = medially rotated arm and dropped shoulder = fully extended arm. m.c. or axillary. |
question
| lower brachial plexus injury |
answer
| lose grip, can't flex hand = claw hand or clumpky's paralysis. ulnar or median. |
question
| supracondylar fracture |
answer
| median nerve and brachial artery can be pinched = "ape-hand" or "ape-thumb" palsy = can't oppose thumb |
question
| actions of upper limb |
answer
| adduction, abduction, lateral rotation, medial rotation, flexion, extension (for these two know the joint that is affected), supination, pronation |
question
| have to know netter's SENSORY innervation map! |
answer
