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Anatomy > Upper Appendicular Muscles > Flashcards

Upper Appendicular Muscles Flashcards

1
Q
A

Muscle:

Trapezius

Origin:

Occipital bone, cervical & thoracic vertebrae

Insertion:

Clavicle, acromion & and spine of scapula

Action:

Elevates (superior fibers), retracts (middle fibers) & depresses (inferior fibers) scapula.

Notes:

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2
Q
A

Muscle:

Levator Scapulae

Origin:

C1-C4

Insertion:

Medial border of scapula (superior)

Action:

Elevates scapula

Notes:

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3
Q
A

Muscle:

Rhomboid Major & R. Minor

Origin:

C7-T5

Insertion:

Medial border of scapula

Action:

Retracts & elevates scapula

Notes:

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4
Q
A

Muscle:

Serratus Anterior

Origin:

Ribs

Insertion:

Medial border of scapula

Action:

Protracts scapula

Notes:

Prime mover in scapula protraction

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5
Q
A

Muscle:

Pectoralis Minor

Origin:

Ribs

Insertion:

Coracoid process of scapula

Action:

Protracts & depresses scapula

Notes:

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6
Q
A

Muscle:

Latissimus Dorsi

Origin:

T7-T12, ribs, iliac crest, thoracolumbar fascia

Insertion:

Intertubercular groove of humerus

Action:

Extends, adducts & medially rotates arm

Notes:

Prime mover of arm extension

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7
Q
A

Muscle:

Pectoralis Major: Clavicular & Sternal head

Origin:

Clavicular head: clavicle

Sternal head: sternum & and costal cartilages

Insertion:

Greater tubercle & intertubercular groove of humerus

Action:

Flexes, adducts & medially rotates arm

Notes:

Prime mover of arm flexion

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8
Q
A

Muscle:

Deltoid: Anterior, Middle & Posterior heads

Origin:

Clavicle, acromion & spine of scapula

Insertion:

Deltoid tuberosity of humerus

Action:

Flexes (anterior fibers), abducts (middle fibers) & extends (posterior fibers) arm

Notes:

Rotates arm medially and laterally

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9
Q
A

Muscle:

Coracobrachialis

Origin:

Coracoid process of scapula

Insertion:

Shaft of humerus

Action:

Adducts & flexes arm

Notes:

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10
Q
A

Muscle:

Teres Major

Origin:

Lateral border & inferior angle of scapula

Insertion:

Lesser tubercle & intertubercular groove of humerus

Action:

Extends, adducts & medially rotates arm

Notes:

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11
Q
A

Muscle:

Supraspinatus

Origin:

Supraspinous fossa of scapula

Insertion:

Greater tubercle of humerus

Action:

Abducts arm

Notes:

Also stabilizes GH joint

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12
Q
A

Muscle:

Infraspinatus

Origin:

Infraspinous fossa of scapula

Insertion:

Greater tubercle of humerus

Action:

Laterally rotates & adducts arm

Notes:

Also stabilizes GH joint

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13
Q
A

Muscle:

Teres Minor

Origin:

Lateral border of scapula

Insertion:

Greater tubercle of humerus

Action:

Laterally rotates & adducts arm

Notes:

Also stabilizes GH joint

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14
Q
A

Muscle:

Subscapularis

Origin:

Subscapular fossa of scapula

Insertion:

Lesser tubercle of humerus

Action:

Medially rotates arm

Notes:

Also stabilizes GH joint

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15
Q
A

Muscle:

Triceps Brachii: Long, Lateral & and Medial heads.

Origin:

Long head: Infraglenoid tubercle of scapula

Lateral & medial heads: Shaft of humerus

Insertion:

Olecranon process of ulna

Action:

Extends forearm (prime mover)

Notes:

Long head also extends & adducts arm

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16
Q
A

Muscle:

Biceps Brachii: Long & Short heads

Origin:

Long head: Supraglenoid tubercle of scapula

Short head: Coracoid process of scapula

Insertion:

Radial tuberosity of radius & bicipital aponeurosis

Action:

Flexes & supinates forearm

Notes:

Long head also flexes arm

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17
Q
A

Muscle:

Brachialis

Origin:

Anterior surface of humerus

Insertion:

Tuberosity & coronoid process of ulna

Action:

Flexes forearm

Notes:

18
Q
A

Muscle:

Brachioradialis

Origin:

Lateral supracondylar ridge of humerus

Insertion:

Styloid process of radius

Action:

Flexes forearm

Notes:

19
Q
A

Muscle:

Pronator Quadratus

Origin:

Distal shaft of ulna

Insertion:

Distal shaft of radius

Action:

Pronates forearm

Notes:

20
Q
A

Muscle:

Supinator

Origin:

Lateral epicondyle of humerus & proximal ulna

Insertion:

Proximal shaft of radius

Action:

Supinates forearm

Notes:

21
Q
A

Muscle:

Pronator Teres

Origin:

Medial epicondyle of humerus

Insertion:

Lateral surface of radius

Action:

Pronates forearm

Notes:

Superficial layer

22
Q
A

Muscle:

Flexor Carpi Radialis

Origin:

Medial epicondyle of humerus

Insertion:

Metacarpals II & III

Action:

Flexes wrist & abducts hand

Notes:

Superficial layer

23
Q
A

Muscle:

Palmaris Longus

Origin:

Medial epicondyle of humerus

Insertion:

Flexor retinaculum & palmar aponeurosis

Action:

Flexes wrist

Notes:

Superficial layer

24
Q
A

Muscle:

Flexor Carpi Ulnaris

Origin:

Medial epicondyle of humerus

Insertion:

Carpals, metacarpal V

Action:

Flexes wrist & adducts hand

Notes:

Superficial Layer

25
Q
A

Muscle:

Flexor Digitorum Superficialis

Origin:

Medial epicondyle of humerus

Insertion:

Middle phalanges II-V

Action:

Flexes fingers 2-5 (MP & PIP joints)

Notes:

Intermediate layer

26
Q
A

Muscle:

Flexor Digitorum Profundus

Origin:

Ulna

Insertion:

Distal phalanges II-V

Action:

Flexes fingers 2-5 (MP, PIP & DIP joints)

Notes:

Deep layer

27
Q
A

Muscle:

Flexor Pollicis Longus

Origin:

Radius

Insertion:

Distal phalanx of thumb

Action:

Flexes thumb (MP joint)

Notes:

Deep layer

28
Q
A

Muscle:

Extensor Carpi Radialis Longus

Origin:

Lateral supracondylar ridge of humerus

Insertion:

Metacarpal II

Action:

Extends wrist & abducts hand

Notes:

29
Q
A

Muscle:

Extensor Carpi Radialis Brevis

Origin:

Lateral epicondyle of humerus

Insertion:

Metacarpal III

Action:

Extends wrist & abducts hand

Notes:

30
Q
A

Muscle:

Extensor Digitorum Communis

Origin:

Lateral epicondyle of humerus

Insertion:

Middle & distal phalanges II-V

Action:

Extends fingers 2-5 (MP, PIP, DIP joints)

Notes:

Also extends wrist & metacarpophalangeal joints

31
Q
A

Muscle:

Extensor Carpi Ulnaris

Origin:

Lateral epicondyle of humerus

Insertion:

Metacarpal V

Action:

Extends wrist & adducts hand

Notes:

32
Q
A

Muscle:

Extensor Digiti Minimi

Origin:

Lateral epicondyle of humerus

Insertion:

Proximal phalanx of digit V

Action:

Extends finger 5 (MP, PIP joints)

Notes:

33
Q
A

Muscle:

Extensor Indicis

Origin:

Posterior ulna

Insertion:

Tendon of extensor digitorum communis

Action:

Extends finger 2 (MP, PIP & DIP joints)

Notes:

34
Q
A

Muscle:

Abductor Pollicis Longus

Origin:

Radius and ulna

Insertion:

Metacarpal I

Action:

Abducts thumb

Notes:

“Anatomical snuffbox”

35
Q
A

Muscle:

Extensor Pollicis Brevis

Origin:

Radius

Insertion:

Proximal phalanx of thumb

Action:

Extends thumb (MP joint)

Notes:

“anatomical snuffbox”

36
Q
A

Muscle:

Extensor Pollicis Longus

Origin:

Ulna

Insertion:

Distal phalanx of thumb

Action:

Extends thumb (MP & IP joints)

Notes:

“anatomical snuffbox”

37
Q
A

Transverse carpal ligament (Flexor retinaculum)

38
Q
A

Carpal tunnel

39
Q
A

Palmar aponeurosis

40
Q
A

Extensor Retinaculum

Anatomy (13 decks)

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