upper arm muscles Flashcards
6 muscles that attach the scapula to the thorax
- trapezius
- levator scapulae
- rhomboidus major/minor
- serratus anterior
- pectoralis minor
levator scapulae movement
elevates, retracts and rotates scapula
laterally flexes the neck
pectoralis MINOR movement
depresses scapula
or elevates ribs
Rhomboideous MAJOR movement
retracts, rotates and fixes scapula
Rhomboideous MINOR movement
retracts, slightly elevates, rotates and fixes scapula
seratous anterior movement
rotates and PROtracts scapula
elevates ribs
trapizieus movement
extends neck
elevates, depresses, retracts rotates and fixes scapula
muscles that attach arm to thorax
- pectoralis major
- Latissimus dorsi
- deltoid
- rotator cuff
rotator cuff muscles function
move arm and hold head of humerous in glenoid cavity
form cup/cap over proximal humerous
rotator cuff muscles movements
flexion, extension, abduction and adduction, rotation and circumduction
4 rotator cuff muscles
- infraspinitous
- subscapularis
- suprspinitous
- teres minor
pectoralis major movement
flexes and extends shoulder
ADDucts and medial rotates arm
latssimus dorsi movement
EXTENDS shoulder
ADDucts and medially rotates arm
muscles of flexion 4
- Deltoid
- pectoralis major
- corachobrachiallis
- biceps brachii
muscles of extension 5
- Deltoid
- pectoralis major
- teres major
- Latissiumus dorsi
- triceps brachi