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Anatomy > Muscles OIA > Flashcards

Muscles OIA Flashcards

1
Q

masseter

A

O: zygomatic arch

I: mandibular angle and mandibular ramus

A: elevates mandible

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2
Q

Temporalis

A

O: temporal fossa of the temporal bone

I: coronoid process of the mandible

A: elevates mandible and retracts mandible

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3
Q

Sternocleidomastoid

A

O: manubrium, medial clavicle

I: mastoid process of the temporal bone

A: flexes and rotates the head

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4
Q

Scalenes: anterior, middle and posterior

A

O: transverse processes of the cervical vertebrae

I: anterior surface of ribs 1-2

A: elevates ribs 1-2, flexes neck, rotates neck

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5
Q

Pectoralis major

A

O: sternal end of the clavicle, sternum, ribs 1-6

I: greater tubercle of the humerus

A: flexes arm at shoulder, rotates arm medially, addicts arm

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6
Q

Pectoralis minor

A

O: ribs 3-5

I: coracoid process of the scapula

A: depresses scapula, rotates scapula downwards

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7
Q

Serratus Anterior

A

O: ribs 1-8

I: vertebral border of the scapula

A: rotates scapula upwards, protracts scapula

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8
Q

External intercostals

A

O: Inferior border of ribs

I: superior border of ribs

A: elevates rib cage

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9
Q

Internal intercostals

A

O: superior border of ribs

I: inferior border of ribs

A: depresses rib cage

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10
Q

External oblique

A

O: ribs 1-2

I: lines alba, pubic crest, pubic tubercle, iliac crest

A: flexes and rotates vertebral column, compresses abdomen

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11
Q

Internal oblique

A

O: lumbar fascia, iliac crest, inguinal ligament

I: linea alba, pubic crest, ribs 9-12

A: flexes and rotates vertebral column, compresses abdomen

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12
Q

Rectus abdominis

A

O: pubic crest, pubic symphysis

I: xiohoid process of the sternum, ribs 5-7

A: flexes and rotates vertebral column, compresses abdomen

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13
Q

Iliacus

A

O: iliac fossa, ala of the sacrum

I: lesser trochanter of the femur

A: flexes thigh at hip, flexes trunk

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14
Q

Psoas major

A

O: transverse process of T12-L5

I: lesser trochanter of the femur

A: flexes thigh at hip, flexes trunk laterally

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15
Q

Deltoid

A

O: lateral 1/3 of clavicle, spine of scapula, acromion process of the scapula

I: deltoid tuberosity of the humerus

A: abducts arm, flexes arm at shoulder, rotates arm medially, extends arm at shoulders, rotates arm laterally

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16
Q

Biceps Brachii long head

A

O: Supraglenoid tubercle of the scapula

I: radial tuberosity

A: flexes forearm at elbow, supinates forearm

17
Q

Biceps Brachii short head

A

O: coracoid process of the scapula

I: radial tuberosity

A: flexes forearm at elbow, supinates forearm

18
Q

Brachialis

A

O: anterior humerus

I: coronoid process of the ulna

A: flexes forearm at elbow

19
Q

Coracobrachialis

A

O: coracoid process

I: medial surface of shaft of humerus

A: flexes arm at shoulder, addicted arm

20
Q

Brachioradialis

A

O: lateral supracondylar ridge of the humerus

I: styloid process of the radius

A: flexes forearm at elbow, stabilizes elbow during flexion and extension

21
Q

Extensor Capri radialis longus

A

O: lateral supracondylar ridge of the humerus

I: 2nd metacarpal

A: extends hand at wrist

22
Q

Extensor Carpi radialis Brevis

A

O: laters epicondyle of the humerus

I: 3rd metacarpal

A: extends hand at wrist, abducts hand

23
Q

Extensor digitorum

A

O: lateral epicondyle of the humerus

I: distal phalanges of 2nd to 5th digit

A: extends distal interphalangeal joints, extends hand at wrist

24
Q

Extensor carpi ulnaris

A

O: lateral epicondyle of the humerus, posterior ulna

I: 5th metacarpal

A: extends hand at wrist, adducts hand

25
Q

Supinator

A

O: lateral epicondyle of the humerus, proximal ulna

I: proximal end of radius

A: supinates forearm

26
Q

Abductor pollicis brevis

A

O: posterior radius, posterior ulna, interosseous membrane

I: trapezium, 1st metacarpal

A: abducts pollex

27
Q

Extensor pollicis Brevis

A

O: posterior radius, posterior ulna, interosseous membrane

I: proximal phalanx of pollex

A: extends 1st metacarpal-phalangeal joint

28
Q

Extensor pollicis longus

A

O: posterior radius, posterior ulna, interosseous membrane

I: distal phalanx pollex

A: extends 1st interphalangeal joint

29
Q

Extensor indicis

A

O: posterior ulna, interosseous membrane

I: distal phalanx of 2nd digit

A: extends 2nd distal interphalangeal joint

30
Q

Extensor digiti minimi

A

O: lateral epicondyle of the humerus

I: distal phalanx of 5th digit

A: extends 5th distal interphalangeal joint

Anatomy (1 decks)

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