Practical 2 Origins, Insertions, Action Flashcards
Digastric
O: Mastoid process (temporal bone) and jugular process (occipital)
I: Mandible
A: Depress mandible/ open mouth
Sternomastoid
O: manubrium of sternum
I: Lambiodal ridge and mastoid process
A: rotate
Masseter
O: zygomatic arch
I: Masseteric fossa of mandible
A: Elevate mandible
Temporalis
O: Temporal bone
I: Coronoid process of mandible
A: Elevate mandible
Pectoantebrachialis
O: Manubrium
I: Fascial of forelimbs
A: adduct the forelimb
Pectoralis major
O: cranial sternebrae
I: Proximal humerus
A: adduct the forelimb
Pectoralis minor
O: Caudal sternebrae
I: Proximal humerus
A: adduct the forelimb
Xiphihumeralis
O: xiphoid process
I: proximal humerus
A: adduct the forelimb
external oblique
O: lumbodorsal fascia and ribs
I: Linea alba
A: compress abdominal viscera
Internal oblique
O: lumbodorsal fascia and pelvis
I: linea alba
A: compress abdominal viscera
Rectus abdominis
O: pubic symphisis
I: sternum and costal cartilages
A: flex trunk and compress abdominal viscera
transversus abdominis
O: ilium, lumbar, vertebrae, and posterior ribs
I: linea alba
A: compress abdominal viscera
Acromiodeltoid
O: acromion of scapula
I: deltoid tuberosity oh humerus
A: flex humerus
Acromiotrapezius
O: spines of vertebrae
I: acromion process and spine of scapula
A: adduct and elevate scapula
Clavodeltoid (clavobrachialis)
O: clavicle
I: proximal ulna
A: abduct and rotate humerus
Clavotrapezius
O: nuchal line of skull and nuchal ligament
I: clavicle
A: moves humerus cranially
Latissimus dorsi
O: lumbodorsal fascia and spines of lower thoracic and lumbar vertebrae
I: medial humerus
A: elevated and move humerus caudally
Spinodeltoid
O: spine of scapula
I: deltoid tuberosity of humerus
A: elevate and rotate humerus
Spinotrapezius
O: spine of thoracic vertebrae
I: scapula
A: elevate and move scapula caudally
Teres major
O: axillary (caudally) border of scapula
I: medial humerus
A: adduct humerus