origin insertion action Flashcards
Occipitofrontalis: insertion and action
Insertion: Epicranial aponeurosis, skin superior to supraorbital margin
Action: Draws scalp anterior (raises eyebrows) posterior
Orbicularis oris: action
closes lips
Orbicularis Oculi: action
closes eyes
Zygomaticus major: origin
zygomatic bone
Levator labii superioris: action
Elevates upper lip
Depressor labii inferioris: action
depresses lower lip
Superior rectus: action
Elevates eyeball
Medial rectus: action
Adducts eyeball
Inferior rectus: action
Depresses eyeball
Lateral rectus: action
Abducts eyeball
Masseter: origin, insertion, action
Origin: Zygomatic arch & maxilla
Insertion: Ramus and angle of mandible
Action: Elevates mandible
Lateral pterygoid: action
Depression of mandible & moves mandible side to side
Sternocleidomastoid: Origin, insertion, action
Origin: Manubrium of sternum and clavicle
insertion: Mastoid process
Action: Both: flexion of cervical vertebrae. Individually: lateral rotation of head.
Pectoralis Major: origin, insertion, action
Origin: Clavicle, sternum, & costal cartilage
Insertion: Greater tubercle & Intertubercular sulcus of humerus
Action: Flexes, adducts, rotates humerus (arm) @ shoulder
Levator Scapulae: origin, insertion, action
Origin: Transverse process of C1-C4
insertion: Superior border of scapula
Action: Elevates scapula
Latissimus dorsi: Origin, action, insertion
Origin: T7-L5 vertebrae, iliac crest
Insertion: Intertubercular sulcus of humerus
Action: Adducts, extends, and rotates humerus (arm) @ shoulder
Deltoid: Origin, insertion, action
Origin: Acromion process, spine of scapula, clavicle
Insertion: Deltoid tuberosity of humerus
action: Abducts, flexes and extends humerus (arm) @ shoulder
Biceps Brachii: Origin, insertion, action
Origin: Glenoid cavity and coracoid process
Insertion: Radial tuberosity
Action: Flexion of arm @ shoulder and flexion of forearm @ elbow
Brachioradialis: Origin, insertion, action
Origin: Humerus
Insertion: Lateral surface of radius
Action: Flexion of forearm @ elbow
Triceps Brachii: Origin, insertion, action
Origin: Glenoid cavity and humerus
Insertion: Olecranon of ulna
Action: Extends forearm @ elbow
Supinator: Origin, insertion, action
Origin: Lateral epicondyle of humerus
Insertion: Lateral surface of radius
Action: Supinates forearm
Flexor Carpi Radialis: origin, insertion, action
Origin: Medial epicondyle of humerus
Insertion: Metacarpals II-III
Action: Flexes and abducts hand @ wrist
Extensor Carpi Radialis Longus: origin, insertion, action
Origin: Lateral supracondylar ridge of humerus
Insertion: Metacarpal II
Action: Extends and abducts hand @ wrist
Pronator Teres: O, I, A
Origin: Medial epicondyle of humerus and coronoid process of ulna
Insertion: Radius
Action: Pronates forearm
Flexor Carpi Ulnaris: O, I, A
Origin: Medial epicondyle of humerus
Insertion: Pisiform, hamate, metacarpal V
Action: Flexes and adducts hand @ wrist
Flexor Digitorum Superficialis: O, I, A
Origin: Medial epicondyle of humerus
Insertion: Middle phalanges
Action: Flexes phalanges & hand @ wrist
Extensor Digitorum: O, I, A
Origin: Lateral epicondyle of humerus
Insertion: Distal and middle phalanges
Action: Extends phalange & hand @ wrist
Gluteus Maximus: O, I, A
Origin: Iliac crest, coccyx, and sacrum
Insertion: Greater trochanter of femur via iliotibial tract
Action: Extends & rotates thigh @ hip
Tensor Fasciae Latae: O, I , A
Origin: Iliac crest
Insertion: Tibia via iliotibial tract
Action: Flexes & abducts thigh @ hip
Adductor Longus: O, I, A
Origin: Pubic crest and symphysis
Insertion: Linea aspera of femur
Action: Adducts, rotates, & flexes thigh @ hip
Gracilis: O, I, A
Origin: Body and inferior ramus of pubis
Insertion: Tibia
Action: Adducts & rotates thigh @ hip, and flexes lower leg @ knee
Rectus Femoris: O, I, A
Origin: Anterior inferior iliac spine
Insertion: Patella and tibial tuberosity
Action; Extends lower leg @ knee & flexes thigh @ hip
Vastus Lateralis, Vastus Medialis, Vastus Intermedius:
Action
Action: Extends lower leg @ knee
Semimembranosus: O, I, A
Origin: Ischial tuberosity
Insertion: Medial condyle of tibia
Action: Flexes lower leg @ knee & thigh @ hip
Biceps Femoris: O, I, A
Origin: Ischial tuberosity and linea aspera
Insertion: Head of fibula
Action: Flexes lower leg @ knee & extends thigh @ hip
Extensor Digitorum Longus: A
Action: Extends toes, dorsiflexes foot
Flexor Digitorum Longus: A
Action: Flexes toes & plantar flexes foot
Gastrocnemius: O, I, A
Origin: Condyles of femur
Insertion: Calcaneus via calcaneal (Achilles) tendon
Action: Plantar flexes foot @ ankle & flexes lower leg @ knee
