MUSCLE OIA Flashcards
Submentalis Origin
Anterior tip of the mandible
Submentalis Insertion
Anterior angle of the lower jaw
Submentalis Action
Raises the tip of the lower jaw
Mylohyoid Origin
Median surface of the mandible
Mylohyoid Insertion
Median raphe
Mylohyoid Action
Raises the floor of the mouth during breathing or swallowing
Geniohyoid Origin
Anterior angle of the lower jaw
Geniohyoid Insertion
Posterior cornua and thyroid processes of the hyoid
Geniohyoid Action
Draws the hyoid forward and upward
Sternoradialis Origin
Episternum and omosternum
Sternoradialis Insertion
Proximal end of the radius
Sternoradialis Action
Flexes the forearm
Cutaneous pectoralis Origin
Xiphisternum; from the anterior margin of the sheath that covers the rectus abdominis
Cutaneous pectoralis Insertion
Dermis of the skin at the pectoral region
Cutaneous pectoralis Action
Tenses the skin that overlies the pectoral girdle
Pectoralis Origin
Sternum
Pectoralis Insertion
Humerus
Pectoralis Action
Flexor, adductor, and rotator of the arm
Rectus abdominis Origin
Pubic border
Rectus abdominis Insertion
Sternum
Rectus abdominis Action
Support the abdominal viscera; hold the sternum in place
External oblique Origin
Ilium; dorsal fascia of vertebrae
External oblique Insertion
Linea alba
External oblique Action
Help constrict the abdomen; support the viscera
Internal oblique Origin
Ilium; dorsal fascia; transverse process of vertebrae
Internal oblique Insertion
Anterior portion of the same aponeurosis to which the external oblique attaches
Internal oblique Action
Help constrict the abdomen; support the viscera
Sartorius Origin
Pubis
Sartorius Insertion
Tibiofibula
Sartorius Action
Flexes the shank; adducts the thigh
Adductor longus Origin
Ilium
Adductor longus Insertion
Femur
Adductor longus Action
Adducts the thigh
Adductor magnus Origin
Pubic symphysis; ischial symphysis
Adductor magnus Insertion
Distal end of the femur
Adductor magnus Action
Adducts the thigh; flexes or extends the shank
Gracilis major Origin
Ischium
Gracilis major insertion
Tibiofibula
Gracilis major Action
Adducts the thigh; flexes the shank
Gracilis minor Origin
Ischium
Gracilis minor Insertion
Tibiofibula
Gracilis minor action
Adducts the thigh; flexes the shank
Semitendinosus Origin
Ischium
Semitendinosus Insertion
Tibiofibula
Semitendinosus Action
Adducts the thigh; flexes the leg
Gastrocnemius Origin
Distal end of the femur; anterior portion of the knee
Gastrocnemius Insertion
Ankle of the foot
Gastrocnemius Action
Extensor of the foot
Tibialis posticus Origin
Posterior surface of the tibiofibula
Tibialis posticus Insertion
Proximal end of the astragalus
Tibialis posticus action
Extensor or flexor of the foot depending on the position of the foot
Extensor cruris Origin
Distal end of the femur
Extensor cruris Insertion
Anterior surface of the proximal half of the tibiofibula
Extensor cruris Action
Extensor of the foot
Flexor tarsi anterior Origin
Anterior surface of the middle and distal half of tibiofibula
Flexor tarsi anterior Insertion
Proximal end of astragalus; fascia of the foot
Flexor tarsi anterior Action
Flexor of the foot
Tibialis anticus Origin
Femur
Tibialis anticus Insertion
Distal end of the astragalus and calcaneus
Tibialis anticus Action
Flexor of the foot
Scapulohumeralis (Deltoid) Origin
Scapula
Scapulohumeralis (Deltoid) Insertion
Deltoid ridge
Scapulohumeralis (Deltoid) Action
Adducts the forearm
Triceps brachii Origin
Base of the scapula; shaft of the humerus
Triceps brachii Insertion
Proximal end of the radioulna
Triceps brachii Action
Extends the forearm
Temporalis Origin
Middorsal line of the skull
Temporalis Insertion
Posterior region of the mandible
Temporalis Action
Raises the lower jaw and closes the mouth
Depressor mandibulae Origin
Through the tough fascia in the middorsal line
Depressor mandibulae Insertion
Mandible
Depressor mandibulae Action
Depresses the jaw
Dorsalis scapulae Origin
Dorsal surface of suprascapula and scapula
Dorsalis scapulae Insertion
Lateral side of the humerus
Dorsalis scapulae Action
Abducts the arm
Cucullaris Origin
Middorsal line
Cucullaris Insertion
Portion of the pectoral girdle
Cucullaris Action
Draws forelimbs upward
Latissimus dorsi Origin
Lumbodorsal fascia
Latissimus dorsi Insertion
Lateral side of the proximal end of the humerus
Latissimus dorsi Action
Draws the forelimb upward and backward
Longissimus dorsi Origin
Anterior third of the urostyle
Longissimus dorsi Insertion
Posterior end of the skull; dorsal surfaces of the vertebrae
Longissimus dorsi Action
Extends the back; elevates the head
Ilio-lumbaris Origin
Anterior part of the ilium
lio-lumbaris Insertion
Transverse processes of the trunk vertebrae
lio-lumbaris Action
Bends the back
Coccygeo-sacralis Origin
Lateral side of the half of the urostyle
Coccygeo-sacralis Insertion
Transverse processes of the sacral vertebrae
Coccygeo-sacralis Action
Draws the back and urostyle nearer to each other
Coccygeo-iliacus Origin
Lateral side of the posterior half of the urostyle
Coccygeo-iliacus Insertion
Ilium
Coccygeo-iliacus Action
Extends the back; fixes the urostyle with respect to the pelvic girdle
(Triceps femoris) Vastus externus Origin
crest of the ilium
(Triceps femoris) Tensor fascia lata Origin
ventral side of the ilium
(Triceps femoris) Vastus internus Origin
acetabulum
Triceps femoris Insertion
Front of tibia
Triceps femoris Action
Draws the hindlimb forward; extends the leg
Gluteus Origin
Ilium
Gluteus Insertion
Proximal end of the femur
Gluteus Action
Rotates the femur forward
Biceps femoris (Iliofibularis) Origin
Posterior part of the ilium
Biceps femoris (Iliofibularis) Insertion
Proximal end of the tibiofibula
Biceps femoris (Iliofibularis) Action
Flexes the shank
Semimembranosus Origin
Posterior part of the ischium
Semimembranosus Insertion
Proximal end of the tibiofibula
Semimembranosus Action
Flexes or extends the shank
Pyriformis Origin
Urostyle
Pyriformis Insertion
Femur
Pyriformis Action
Pulls the urostyle to one side; draws the femur dorsally
Peroneus Origin
Distal end of the femur
Peroneus Insertion
Distal end of the tibiofibula; proximal end of calcaneus
Peroneus Action
Extensor and flexor of the foot