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Anatomy lab > Units 6 muscles of the superior limbs > Flashcards

Units 6 muscles of the superior limbs Flashcards

1
Q

supraspinatus muscles

A

origin: supraspinous fossa of the scapula Insertion: greater tubercle of the humerus action: abduct superior limb at the shoulder joint

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2
Q

infraspinatus muscle

A

Origin: infraspinous fossa of the scapula Insertion: greater tubercle of the humerus Action:extend shoulder joint, rotate brachium laterally (externally)

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3
Q

teres minor muscle

A

Origin:lateral border of the scapula Insertion: greater tubercle of the humerus Action: adduct superior limb at shoulder joint, rotate brachium laterally (externally)

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4
Q

teres major muscle

A

Origin: inferior angle of the scapula Insertion: medial border of the inter tubercular groove of the humerus Action: extend shoulder joint, adduct superior limb at shoulder joint, rotate brachium medially (internally)

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5
Q

subscapularis muscle

A

Origin: sub scapular fossa Insertion: lesser tubercle of the humerus Action: rotate brachium medially ( internally)

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6
Q

Deltoideus muscle

A

Origin: acromial extremity of the clavicle, acromion and spine of the scapula Insertion: deltoid tuberosity of the humerus Action: flex and extend shoulder joint, rotate brachium (both medially and laterally) abduct superior limb at shoulder joint

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7
Q

coracobrachialis muscle

A

Origin: coracoid process of the scapula Insertion: medial aspect of the body of the humerus Action: flex shoulder joint, adduct superior limb at shoulder joint

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8
Q

biceps brachii muscle

A

prominent muscle on the anterior aspect of the brachium

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9
Q

long head of the biceps brachii muscle

A

Origin: next of the scapula Insertion: tuberosity of the radius, deep antebrachial fascia via bicipital Action: flex elbow joint, flex shoulder joint and supinate antebrachium

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10
Q

short head of the biceps brachii muscle

A

Origin: coracoid process of the scapula Insertion: tuberosity of the radius, deep antebrachial fascia via bicipital Action: flex elbow joint, flex shoulder joint and supinate antebrachium

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11
Q

bicipital aponeurosis

A

flat tendinous sheet of the biceps brachii muscle near the elbow that diverges medially from the main tendon and blends into the deep antebrachial fascia

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12
Q

brachialis muscle

A

Origin: anterior aspect of the body of the humerus Insertion: coronoid process of the ulna Action: flex elbow joint

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13
Q

brachioradialis muscle

A

Origin: lateral supracondylar crest of the humerus Insertion: base of styloid process of the radius Action: flex elbow joint, supinate antebrachium (from pronated position) and pronate antebrachium (from supinated position)

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14
Q

posterior muscles of the brachium

A

two muscles both extend the elbow join and both insert on the olecranon of the ulna

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15
Q

triceps brachii muscle

A

large muscle which occupies most posterior brachial region. has 3 heads

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16
Q

long head of the triceps brachii muscle

A

Origin: lateral border of the scapula Insertion:olecranon of the ulna Action: extend elbow joint, extend shoulder joint (long head) adduct superior limb at shoulder joint (long head)

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17
Q

medial head of the triceps brachii muscle

A

Origin: medial and posterior aspects of the humerus Insertion: olecranon of the ulna Action: extend elbow joint, extend shoulder joint (long head) adduct superior limb at shoulder joint (long head)

18
Q

lateral head of the triceps brachii muscle

A

Origin: lateral and posterior aspects of the humerus Insertion: olecranon of the ulna Action: extend elbow joint, extend shoulder joint (long head) adduct superior limb at shoulder joint (long head)

19
Q

ancones muscle

A

Origin: lateral epicondyle of the humerus Insertion: olecranon of the ulna Action: extend cubital joint

20
Q

anterior muscles of the antebrachium

A

9 muscles occupy the anteromedial aspect of the antebrachium

21
Q

flexor carpi radialis muscle

A

Origin: medial epicondyle of the humerus Insertion: anterior aspect of the bases of the 2nd and 3rd metacarpal bones Action: flex carpal joint, abduct manus at carpal joint

22
Q

palmaris longus muscle

A

Origin: medial epicondyle of the humerus Insertion: carpal flexor retinaculum and palmar aponeurosis Action: flex carpal joint

23
Q

superficial digital flexor muscle

A

Origin: medial epicondyle of the humerus, coronoid process of the ulna, proximal aspect of the radius Insertion: middle phalanges of the digits 2,3,4 & 5 Action: flex carpal joint, metacarpophalangeal joint, and proximal interphalangeal joints of digits 2-5

24
Q

deep digital flexor muscle

A

Origin: proximal aspect of the ulna Insertion: base of the distal phalanges of digits 2,3,4, & 5 Action: flex carpal joints and digital joints of digits 2-5

25
Q

flexor pollicis longus muscle

A

Origin: anterior aspect of the radial body Insertion: distal phalanx of pollex Action: flex digital joints of pollex

26
Q

flexor carpi ulnaris muscle

A

Origin: medial epicondyle of the humerus, olecranon and body of the ulna Insertion: pisiform bone, hamulus of the hamate bone, base of the 5th metacarpal bone Action: flex carpal joint, adduct manus at carpal joint

27
Q

pronator teres muscle

A

Origin: medial epicondyle of the humerus and medial side of coronoid process of the ulna Insertion: lateral side of the middle aspect of body of the radius Action:pronate the manus

28
Q

pronator quadratus muscle

A

Origin: distal, anterior aspect of the body of the ulna Insertion: distal, anterior aspect of body of the radius Action: pronate the manus

29
Q

supinator muscle

A

Origin: lateral epicondyle of the humerus Insertion: body of the radius Action: supinate the manus

30
Q

posterior muscles of the antebrachium

A

9 muscles occupy posterolateral aspects of the antebrachium.

31
Q

extensor carpi radialis longus muscle

A

Origin: lateral supracondylar crest of the humerus Insertion: dorsal aspect of base of the second metacarpal bone Action: extend carpal joint, abduct manus at the carpal joint

32
Q

extensor carpi radialis brevis muscle

A

Origin: lateral epicondyle of the humerus Insertion: dorsal aspect of base of the 3rd metacarpal bone Action: extend carpal joint, abduct manus at the carpal joint

33
Q

Distal extensor muscle

A

Origin: lateral epicondyle o the humerus Insertion: middle and distal phalanges of digits 2,3,4 &5 Action: extend carpal joint extend interphalangeal joints of digits 2-5

34
Q

extensor digiti minimi muscle

A

Origin: lateral epicondyle of the humerus Insertion: fuses with tendon digital extensor distributed to the 5th digit; proximal phalanx of the 5th finger Action: extend carpal joint, extend digital joints of digit 5

35
Q

extensor carpi ulnas muscle

A

Origin: lateral epicondyle of the humerus; proximal, posterior aspect of the body of the ulna Insertion: base of the 5th metacarpal bone Action: extend carpal joint, adduct manus at carpal joint

36
Q

abductor pollicis longus muscles

A

Origin: aspects of the radial and ulnar bodies Insertion: lateral side of base of the 1st metacarpal bone Action: extend digital joints of the thumb, abduct thumb at its carpometacarpal joint

37
Q

extensor pollicis brevis muscle

A

Origin: posterior aspect of the body of radius and antebrachial interosseous membrane Insertion: dorsal surface of the proximal phalanx of the thumb Action: extend metacarpophalangeal joins of the thumb, abduct them at metacarpophalangeal joint

38
Q

extensor pollicis longus muscle

A

Origin: posterior aspect of body of the ulna and antebrachial interosseous membrane Insertion: dorsal aspect of the distal phalanx of the thumb Action: extend distal joint of the thumb, abduct them at its metacarpophalangeal joint

39
Q

extensor indicis muscle

A

Origin: posterior aspect of body of the ulna Insertion: dorsal aspect of the proximal phalanx of index finger Action: extend the 2nd metacarpophalangeal joint

40
Q

muscles of the sholder and scapula

A
41
Q

anterior muscles of the brachium

A

3 muscles have one action in common: flexion of the cubital joint

Anatomy lab (15 decks)

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