Mink Muscles Part 1

Physiology

temporalis

action: elevates mandible (movement of jaw)

origin: temporal fossa

insertion: coronoid process of the mandible

clavotrapezius

action: pulls the humerus forward

origin: occipital bone and dorsal midline of neck

insertion: clavicle

acromiotrapezius

action: pulls scapula dorsally

origin: dorsal midline of neck

insertion: acromion process

spinotrapezius

action: rotates scapula backwards

origin: midline of thorax

insertion: scapular spine

latissimus dorsi

action: pulls humerus backwards

origin: dorsal fascia of thorax

insertion: medial surface of humerusand lower ribs

thoracolumbar fascia

action: connects the back muscles together

origin: covers the back muscles

insertion: connects the back muscles

shiver muscle

the muscle allows for shivering and shaking of the whole body as it is located in the back; it also protects the mink and other mammals from extreme temperatures 

dorsoepitrochlearis

action: extends forearm

origin: surface of latissimus dorsi

insertion: olecranon Process of Ulna

triceps brachii longhead

action: extends forearm

origin: scapula

insertion: olecranon process

triceps brachii lateralhead

action: extends forearm

origin: lateral surface of humerus

insertion: olecranon process

spinodeltoid

action: allows for pulling and abduction of humerus

origin: scapular spine

insertion: deltoid ridge of humerus

massetter

action: elevates madible

origin: zygomatic arch

insertion: masseteric fossa of madible

digastric

action: depresses mandible

origin: occipital process and mastoid

insertion: medial surface of mandible

mylohyoid

action: elevates floor of mouth

origin: medial surface of madible

insertion: hyoid bone

sternomastoid

action: turns head

origin: sternum

insertion: occipital bone

sternohyoid

action: pulls tongue backward

origin: cartilage of first rib

insertion: hyoid bone

pectoralis major

action: pulls and abducts humerus

origin: sternum

insertion: pectoral ridge and part of humerus distal to it

pectoralis minor

action: abducts humerus

origin: sternum

insertion: pectoral ridge of humerus

clavodeltoid

action: pulls humerus forward

origin: clavicle

insertion: humerus distal to deltoid tuberosity

external abdominal oblique

action: compression of abdomen

origin: posterior ribs and fascia of back

insertion: ct of rectus sheath

rectus sheath

Function: Protects muscles and tissues that it encloses

linea alba

Function: Keep the right and left abdominal muscles separated