Pectoral and Scapular Regions Flashcards
How many muscles make up the pectoral region
4
what muscle moves the clavicle (pectoral region)
subcalvius - C5,6
What muscle moves the humorous (pectoral region)
pectoralis major - medial (C8,T1) and lateral pectoral (c5,6,7)
what muscles move the scapula (pectoral region)
pectoralis minor - medial pectoral nerve (C8,T1)
serrates anterior - long thoracic nerve (C5,6,7)
pectoralis major
2 heads
adducts
medially rotates
pectoralis minor
stabilises/depresses scapulas
subclavius
stabilises/depresses clavicle
serratus anterior
protracts
prevents winging scapular rotation
what muscle moves the humorous (extrinsic back muscles)
lattissimus dorsi - thoracodorsal nerve (C6,7,8)
what muscles move the scapula (extrinsic back muscles)
trapezius - spinal accessory
rhomboids (major and minor) - dorsal scapular nerve (C3,4)
levator scapula - cervical nerves (C3,4) dorsal scapular (c4,5)
latissimus dorsi
action at GH joint
extends
adducts
medially rotates
prime mover in elevation/depression of scapula
upper trapezius and gravity
prime mover in protraction and retraction
serratus anterior and middle trapezius
prime mover for upward rotation and downward rotation
upper trapezius and serratus anterior
latissimus dorsi
nerves that supply the deltoid
axillary nerve (C5,6)