anatomy origin Flashcards
what is the Origin, Insertion, Action?
Abductor pollicis longus
ORIGIN: Proximal dorsal surfaces of ulna and radius,
INSERTION: 1st metacarpal bone and trapezium,
ACTION: Abducts and extends the thumb
what is the Origin, Insertion, Action?
Abductor pollicis brevis
ORIGIN: Transverse carpal ligament, scaphoid and trapezium,
INSERTION: Radial side of base of proximal phalanx of thumb,
ACTION: Abduction of thumb
what is the Origin, Insertion, Action?
Adductor longus
ORIGIN: Pubis near pubic symphysis,
INSERTION: Linea aspera,
ACTION: Adducts, medially rotates, and flexes thigh
what is the Origin, Insertion, Action?
Adductor brevis
ORIGIN: Body and inferior ramus of pubis,
INSERTION: Linea aspera and adductor tubercle of femur,
ACTION: Adducts and medially rotates thigh
what is the Origin, Insertion, Action?
Adductor pollicis
ORIGIN: Metacarpal and carpal bones,
INSERTION: Proximal phalanx of thumb,
ACTION: Adduction of thumb
what is the Origin, Insertion, Action?
Adductor magnus
ORIGIN: Ischial and pubic rami; and ischial tuberosity,
INSERTION: Linea aspera and adductor tubercle of femur,
ACTION: Adducts, medially rotates, and flexes thigh; also synergistic to hamstrings in thigh extension
what is the Origin, Insertion, Action?
Biceps Brachii Muscle
ORIGIN: Coracoid Process of Scapula, Supraglenoid tubercle of Scapula,
INSERTION: Radial Tuberosity of Radius,
ACTION: Agonist for Flexion of the Elbow and Supinates the forearm
what is the Origin, Insertion, Action?
Brachialis
ORIGIN: Distal Humerus,
INSERTION: Coronoid Process of Ulna,
ACTION: Flexes the forearm
what is the Origin, Insertion, Action?
Biceps femoris

ORIGIN: Ischil tuberosity, linea aspera, lateral supracondylar line, and distal femur,
INSERTION: Head of fibula and lateral condyle of tibia,
ACTION: Extends thigh and flexes knee
what is the Origin, Insertion, Action?
Brachioradialis
ORIGIN: Lateral Supracondylar of Humerus,
INSERTION: Styloid Process of Radius,
ACTION: Synergist for Flexion of the Forearm
what is the Origin, Insertion, Action?
Buccinator
ORIGIN: Molar region of maxilla and mandible,
INSERTION: Orbicularis Oris,
ACTION: Draw corner of mouth laterally, ; compresses cheek (as in whistling); holds food between teeth during chewing
what is the Origin, Insertion, Action?
Bulbospongiosus
ORIGIN: Central tendon of perineum and midline raphe,
INSERTION:_ Corpora cavernosa,
ACTION: Empties male urethra; assists in erection of penis/clitoris
what is the Origin, Insertion, Action?
Coccygeus
ORIGIN: Ischeal spine,
INSERTION: Sacrum and coccyx,
ACTION: Supports pelvic viscera; pulls coccyx forward after it has been reflected posteriorly by defecation and childbirth
what is the Origin, Insertion, Action?
Digastric
ORIGIN: Lower margin of Mandible and Mastoid Process,
INSERTION: Hyoid Bone,
ACTION: Elevates Hyoid Bone; open mouth and depress mandible
what is the Origin, Insertion, Action?
Diaphragm
ORIGIN: Ribs and its Cartilage, Sternum, Vertebrae,
INSERTION:_ Central Tendon,
ACTION: Prime Action in Inspiration
what is the Origin, Insertion, Action?
Deep transverse perineal muscle
ORIGIN: Ischial ramim,
INSERTION: Midline central tendon,
ACTION: Support pelvic organs
what is the Origin, Insertion, Action?
Deltoid Muscles
ORIGIN: Lateral third of Clavicle and Acromion and spine of Scapula,
INSERTION: Deltoid tuberosity of Humerus,
ACTION: Abduction of the Shoulder
what is the Origin, Insertion, Action?
Coracobrachialis
ORIGIN: Coracoid process of scapula,
INSERTION:_ Medial surface of humerus shaft,
ACTION: Flexion and adduction of humerus
Epicranium - frontal bell

ORIGIN: Epicranial aponeurosis,
INSERTION: Skin of the Eyebrown, bridge of nose,
ACTION: Raise the Eyebrown, wrinkles forehead
what is the Origin, Insertion, Action?
Epicranium - occipital belly

ORIGIN: Occipital and temporal bones,
INSERTION: Epicranial aponeurosis,
ACTION: Pulls scalp posteriorly
what is the Origin, Insertion, Action?
Extensor carpi radialis brevis
ORIGIN: Lateral epicondyle of Humerus,
INSERTION: Base of 3rd Metacarpal,
ACTION: Extends and abducts wrist
what is the Origin, Insertion, Action?
Extensor carpi radialis longus
ORIGIN: Lateral supracondylar ridge of Humerus,
INSERTION: Base of 2nd Metacarpal,
ACTION: Extends wrist; abducts wrist
what is the Origin, Insertion, Action?
Extensor carpi ulnaris
ORIGIN: Lateral epicondyle of Humerus and posterior border of ulna,
INSERTION: Base of 5th Metacarpal,
ACTION: Extends wrist; adducts wrist
what is the Origin, Insertion, Action?
Extensor digitorum
ORIGIN: Lateral epicondyle of Humerus,
INSERTION: Distal Phalanges of Fingers 2-5,
ACTION: Prime mover of finger extension

















