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The muscular system > origin insertion action > Flashcards

origin insertion action Flashcards

1
Q

Occipitofrontalis: insertion and action

A

Insertion: Epicranial aponeurosis, skin superior to supraorbital margin

Action: Draws scalp anterior (raises eyebrows) posterior

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2
Q

Orbicularis oris: action

A

closes lips

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3
Q

Orbicularis Oculi: action

A

closes eyes

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4
Q

Zygomaticus major: origin

A

zygomatic bone

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5
Q

Levator labii superioris: action

A

Elevates upper lip

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6
Q

Depressor labii inferioris: action

A

depresses lower lip

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7
Q

Superior rectus: action

A

Elevates eyeball

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8
Q

Medial rectus: action

A

Adducts eyeball

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9
Q

Inferior rectus: action

A

Depresses eyeball

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10
Q

Lateral rectus: action

A

Abducts eyeball

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11
Q

Masseter: origin, insertion, action

A

Origin: Zygomatic arch & maxilla

Insertion: Ramus and angle of mandible

Action: Elevates mandible

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12
Q

Lateral pterygoid: action

A

Depression of mandible & moves mandible side to side

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13
Q

Sternocleidomastoid: Origin, insertion, action

A

Origin: Manubrium of sternum and clavicle

insertion: Mastoid process

Action: Both: flexion of cervical vertebrae. Individually: lateral rotation of head.

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14
Q

Pectoralis Major: origin, insertion, action

A

Origin: Clavicle, sternum, & costal cartilage

Insertion: Greater tubercle & Intertubercular sulcus of humerus

Action: Flexes, adducts, rotates humerus (arm) @ shoulder

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15
Q

Levator Scapulae: origin, insertion, action

A

Origin: Transverse process of C1-C4

insertion: Superior border of scapula

Action: Elevates scapula

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16
Q

Latissimus dorsi: Origin, action, insertion

A

Origin: T7-L5 vertebrae, iliac crest

Insertion: Intertubercular sulcus of humerus

Action: Adducts, extends, and rotates humerus (arm) @ shoulder

17
Q

Deltoid: Origin, insertion, action

A

Origin: Acromion process, spine of scapula, clavicle

Insertion: Deltoid tuberosity of humerus

action: Abducts, flexes and extends humerus (arm) @ shoulder

18
Q

Biceps Brachii: Origin, insertion, action

A

Origin: Glenoid cavity and coracoid process

Insertion: Radial tuberosity

Action: Flexion of arm @ shoulder and flexion of forearm @ elbow

19
Q

Brachioradialis: Origin, insertion, action

A

Origin: Humerus

Insertion: Lateral surface of radius

Action: Flexion of forearm @ elbow

20
Q

Triceps Brachii: Origin, insertion, action

A

Origin: Glenoid cavity and humerus

Insertion: Olecranon of ulna

Action: Extends forearm @ elbow

21
Q

Supinator: Origin, insertion, action

A

Origin: Lateral epicondyle of humerus

Insertion: Lateral surface of radius

Action: Supinates forearm

22
Q

Flexor Carpi Radialis: origin, insertion, action

A

Origin: Medial epicondyle of humerus

Insertion: Metacarpals II-III

Action: Flexes and abducts hand @ wrist

23
Q

Extensor Carpi Radialis Longus: origin, insertion, action

A

Origin: Lateral supracondylar ridge of humerus

Insertion: Metacarpal II

Action: Extends and abducts hand @ wrist

24
Q

Pronator Teres: O, I, A

A

Origin: Medial epicondyle of humerus and coronoid process of ulna

Insertion: Radius

Action: Pronates forearm

25
Q

Flexor Carpi Ulnaris: O, I, A

A

Origin: Medial epicondyle of humerus

Insertion: Pisiform, hamate, metacarpal V

Action: Flexes and adducts hand @ wrist

26
Q

Flexor Digitorum Superficialis: O, I, A

A

Origin: Medial epicondyle of humerus

Insertion: Middle phalanges

Action: Flexes phalanges & hand @ wrist

27
Q

Extensor Digitorum: O, I, A

A

Origin: Lateral epicondyle of humerus

Insertion: Distal and middle phalanges

Action: Extends phalange & hand @ wrist

28
Q

Gluteus Maximus: O, I, A

A

Origin: Iliac crest, coccyx, and sacrum

Insertion: Greater trochanter of femur via iliotibial tract

Action: Extends & rotates thigh @ hip

29
Q

Tensor Fasciae Latae: O, I , A

A

Origin: Iliac crest

Insertion: Tibia via iliotibial tract

Action: Flexes & abducts thigh @ hip

30
Q

Adductor Longus: O, I, A

A

Origin: Pubic crest and symphysis

Insertion: Linea aspera of femur

Action: Adducts, rotates, & flexes thigh @ hip

31
Q

Gracilis: O, I, A

A

Origin: Body and inferior ramus of pubis

Insertion: Tibia

Action: Adducts & rotates thigh @ hip, and flexes lower leg @ knee

32
Q

Rectus Femoris: O, I, A

A

Origin: Anterior inferior iliac spine

Insertion: Patella and tibial tuberosity

Action; Extends lower leg @ knee & flexes thigh @ hip

33
Q

Vastus Lateralis, Vastus Medialis, Vastus Intermedius:

Action

A

Action: Extends lower leg @ knee

34
Q

Semimembranosus: O, I, A

A

Origin: Ischial tuberosity

Insertion: Medial condyle of tibia

Action: Flexes lower leg @ knee & thigh @ hip

35
Q

Biceps Femoris: O, I, A

A

Origin: Ischial tuberosity and linea aspera

Insertion: Head of fibula

Action: Flexes lower leg @ knee & extends thigh @ hip

36
Q

Extensor Digitorum Longus: A

A

Action: Extends toes, dorsiflexes foot

37
Q

Flexor Digitorum Longus: A

A

Action: Flexes toes & plantar flexes foot

38
Q

Gastrocnemius: O, I, A

A

Origin: Condyles of femur

Insertion: Calcaneus via calcaneal (Achilles) tendon

Action: Plantar flexes foot @ ankle & flexes lower leg @ knee

The muscular system (1 decks)

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