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
Infraspinatus
O: infraspinous fossa
I: greater tuberosity of humerus
A: rotate humerus
Longissimus dorsi
A: extend vertebrae column
Subscapularis
O: subscapular fossa
I: lesser tuberosity of humerus
A: adduct humerus
Supraspinatus
O: supraspinous fossa
I: greater tuberosity of humerus
A: extend humerus
Biceps brachii
O: supraglenoid tubercle
I: radial/bicipital tuberosity
A: flex forearm
Brachialis
O: lateral humerus
I: proximal ulna (coronoid process)
A: flex arm
Triceps brachii
O: humerus
I: olecranon of ulna
Has 3 heads
Lateral head of triceps brachii
O: deltoid ridge of humerus
I: olecranon of ulna
A: extend forearm
Long head of triceps brachii
O: axillary border of scapula
I: olecranon of ulna
A: extend forearm
Medial head of triceps brachii
O: humerus
I: olecranon of ulna
A: extend forearm
Brachioradialis
O: midhumeris
I: styloid process of radius
A: supinate the manus
Extensor carpi radialis longus
O: distal humerus
I: second metacarpal
A: extend the manus
Extensor carpi ulnaris
O: lateral epicondyle of humerus
I: fifth metacarpal
A: extend the manus
Supinator
O: lateral epicondyle of humerus
I: radius (proximal end)
A: supinate the manus
Flexor carpi ulnaris
O: medial epicondyle of humerus
I: pisiform bone
A: flex the manus
Palmaris longus (flexor digitorum superficialis)
O: medial epicondyle of humerus
I: digits 2-5
A: flex the manus
Pronator teres
O: medial epicondyle of humerus
I: medial border of radius
A: pronate the manus
Caudofemoralis
O: proximal caudal vertebrae
I: patella
A: abduct thigh
Gluteus Maximus
O: last sacral and fist caudal vertebra
I: fascia latae
A: abduct thigh
Gluteus medius
O: Ilic crest, sacral vertebra, and first caudal vertebra
I: greater trochanter of femur
A: abduct thigh
Gracilis
O: pubic symphysis
I: fascia of distal thigh
A: abduct thigh
Tensor fascia latae
O: ilium
I: fascia latae
A: extend fascia latae
Rectus femoris
O: ilium
I: patella
A: extend leg
Sartorius
O: iliac crest
I: patella and proximal tibia
A: adduct and laterally rotate thigh, extend the leg
Vastus intermedius
O: femur
I: patella
A: extend the leg
Vastus lateralis
O: shaft of femur
I: patella
A: extend the leg
Vastus medialis
O: greater trochanter of femur
I: patella
A: extend the leg
Biceps femoris
O: Ischial tuberosity
I: proximal tibia
A: flex shank, adduct thigh
Semimembranosus
O: ischium
I: medial epicondyle of femur, proximal tibia
A: extend thigh
Semitendinosus
O: ischium
I: tibia
A: flex leg
Tibialis anterior
O: proximal tibia and fibula
I: first metatarsal
A: dorsiflex the foot
Gastrocnemius
O: distal, posterior femur, tendon of plantaris
I: calcaneus
A: extend the foot
