Muscles (the upper extremity) Flashcards
Muscles that cross in front of shoulder help w/ shoulder:
Flexion
Muscles that cross over shoulder help w/ shoulder:
Abduction
Muscles of the shoulder girdle will have origins and insertions between:
clavicle, scapula, thorax
- EXCEPT: pec maj. + lat. dorsi
Muscles of the shoulder have origins and insertions between:
clavicle, scapula, humerus
What are the muscles of the ant. shoulder girdle:
- pec minor
- serratus ant.
- subclavius
- pec. major (also a shoulder muscle)
muscles of post. shoulder girdle
- Rhomboideus major
- rhomboideus minor
- levator scapula
- trapezius
- lat dorsi (also a shoulder muscle)
Muscles of the shoulder: superior
Supraspinatus, middle deltoid
Muscles of the shoulder: inferior
teres major, lat dorsi, long head of triceps brachii
Muscles of the shoulder: posterior
post. deltoid, teres minor, infraspinatus
muscles of the shoulder: anterior
pec major, coracobrachialis, subscapularis, ant. deltoid, long head of biceps brachii
Rotator cuff
supraspinatus, infraspinatus, teres minor, subscapularis
Muscles of the arm:
ant: biceps brachii, brachialis, coracobrachialis
post: triceps brachii
Muscles of forearm proximal vs distal ends
Proximal end: bulky (muscle bellies)
Distal end: Thin (muscle tendons)
Muslces of the forearm (actions)
Anterior: flexors and pronators
Post: extensors and supinators
Muscles of the anterior forearm are innervated by:
median n.
(except flexor carpi ulnaris: ulnar n., and flexor digitorum profundus: median + ulnar n.)