Fetal Pig Muscles - Origin and Insertion, Action
teres major (origin and insertion)
(border of) scapula, (greater tuberosity of) humerus
sternohyoid (origin and insertion)
manubrium of sternum, hyoid (bone)
acromiodeltoid (action)
raises the humerus
spinodeltoid (origin and insertion)
spine of scapula, proximal humerus
spinotrapezius (origin and insertion)
(first 10) thoracic vertebrae, scapula
splenius (origin and instertion)
(first two) thoracic vertebrae (and) dorsal midline; occipital bone
digastric (action)
(moves the mandible) chewing
biceps brachii (origin and insertion)
(single tendon over) humerus; coracoid process of (the) scapula, radius and ulna
pectoralis minor (action)
adducts and retracts forelimb
acromiotrapezius (action)
adducts scapula
spinotrapezius (action)
adducts scapula
sternomastoid (origin and insertion)
anterior sternum, mastoid process
brachiocephalic (origin and insertion)
back of neck, mastoid process, back of head; humerus
scalenus medius (action)
bend neck and draw ribs anteriorly
levator scapulae ventralis (origin and insertion)
cervical vertebrae, (medial border of) scapula
acromiotrapezius (origin and insertion)
cervical vertebrae, spine of scapula
sternohyoid (action)
depresses (the) larynx (swallowing)
digastric (origin and insertion)
digastric fossa of mandible, intermediate tendon
rhomboideus capitus (action)
draw (the) scapula forward
pectoralis major (action)
draws forelimb toward chest
levator scapulae ventralis (action)
elevates (the) scapula
thyrohyoid (action)
elevates the larynx (swallowing, speech)
pectoralis minor (origin and insertion)
entire sternum, proximal humerus
triceps brachii, lateral head (action)
extends elbow
triceps brachii, long head (action)
extends elbow
splenius (action)
extends the head (and) flexes it laterally
biceps brachii (action)
flexes (the) lower forelimb
sternomastoid (action)
flexes head upon (the) chest, inclines it to one side
latissimus dorsi (origin and insertion)
lumbodorsal fascia, lumbar and thoracic vertebrae, proximal humerus
brachiocephalic (action)
moves forelimb anteriorly
latissimus dorsi (action)
moves forelimb dorsally and posteriorly
scalenus medius (origin and insertion)
neck and thorax (on the ribs), cervical vertebrae
rhomboideus capitus (origin and insertion)
occipital (bone), scapula
triceps brachii, long head (origin and insertion)
posterior (border of the) scapula, olecranon (process) of ulna
triceps brachii, lateral head (origin and insertion)
proximal (end of) humerus, olecranon (process) of ulna
spinodeltoid (action)
raises the humerus (acts in unison with acromiodeltoid)
teres major (action)
rotates humerus laterally, flexes shoulder, adducts forelimb
acromiodeltoid (origin and insertion)
scapula, mid-humerus
thyrohyoid (origin and insertion)
thyroid cartilage (of larynx), hyoid (bone)
pectoralis major (origin and insertion)
upper sternum, humerus
