15: ANTERIOR MUSCLES Flashcards
Where is the serratus anterior (upper body)
sides of ribs
what does the serratus anterior cross
crosses the shoulder girdle, moves the scapula relative to the rib cage
what does the serratus anterior do
pulls shoulder girdle forward and upwardly rotates the scapula
where is the pectoralis major (upper body)
chest
what does the pec major cross
crosses shoulder joint
what does the pec major do
draws arms across the body (flexion/abduction)
turns arm inwards (medial rotation)
draws arm down to the side (abduction)
Lifts arm forwards (flexion)
where is the pec minor (upper body)
front of chest (beneath major)
what does the pec minor cross
shoulder girdle
what does the pec minor do
pulls shoulder girdle forward (protraction)
downwardly rotates scapula (works with rhomboids)
where is the subscapularis (upper body)
one of the 4 muscles of the rotator cuff, attaches to the scapula and extends up to the humerus
where does the subscapularis cross
crosses the shoulder joint
what does the subscapularis do
medially rotates the humerus at shoulder
stabilises the joint
4 main muscles of the upper body
Pec Major
Pec minor
subscapularis
serratus anterior
Where is the biceps brachii (arm)
front of the upper arm
where does the biceps brachii cross
crosses elbow and shoulder
what does the biceps brachii do
bends the elbow (flexion)
turns forearm hand up (supination)
assists raising the arm to the shoulder (shoulder flexion)
Where is the Brachialis (arm)
front of upper arm
where does the brachialis cross
elbow joint
What does the brachialis do
bends the elbow
Where is the brachioradialis (arm)
forearm
what does the brachioradialis cross
elbow
what does the brachioradialis do
bends the elbow
Main muscles in the arm
Biceps Brachii
Brachialis
brachioradialis
Where is the rectus abdominis (abdominals)
front of torso
What does the rectus abdominis cross
crosses the intervertebral joints of the lumbar and thoracic vertebrae
what does the rectus abdominis do
bends the torso forward (flexion)
tilts the pelvis backwards (posterior tilt)
Where is the transverse abdominis (abdominals)
sides of the torso
where does the transverse abdominis cross
intervertebral joints of lumbar and thoracic