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Gross anatomy Exam 2 > Upper Limb > Flashcards

Upper Limb Flashcards

1
Q

infraspinatus

A

RTC

origin: infraspinous fossa of scapular
insertion: greater tubercle of humerus
innervation: suprascapular nerve C4-C6
action: external rotation

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2
Q

teres minor

A

RTC

origin: lateral border of scapular
inserts: greater tubercle of humerus
innervation: axillary nerve C5 C6
action: external rotation, weak adduction

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3
Q

subscapularis

A

RTC

origin: subscapular fossa of scapular
inserts: lesser tubercle of humerus
innervation: subscapular nerve C5 C6
action: internal rotation

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4
Q

Supraspinatus

A

rotator cuff muscle

origin: supraspinous fossa of scapula
inserts: greater tuberosity of humerus
innervation: suprascapular nerve C4-C6
action: initiation of abduction

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5
Q

coracobrachialis

A

originates at the coracoid process of scapula
inserts in line with crest of lesser tuberosity of humerus
innervation: musculocutaneous C5-C7
action: flexion, adduction, internal rotation

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6
Q

deltoid clavicular part

A

origin: lateral one third of clavicle
insert: deltoid tuberosity of humerus
innervation: axillary nerve C5 C6
action: flexion, internal rotation, adduction

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7
Q

deltoid acromial part

A

origin: acromion
insert: deltoid tuberosity of humerus
innervation: axillary nerve C5 C6
action: abduction

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8
Q

deltoid spinal part

A

origin: scapular spine
insert: lesser tubercle of humerus
innervation: axillary C5 C6
action: extension, external rotation, adduction

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9
Q

Pectoralis Major (3 parts)

A

Clavicular part: originates at the medial half of clavicle
Sternocostal part: originates at the sternum and costal cartilages 1-6
Abdominal part: originates anterior layer of rectus sheath

inserts at the crest of the greater tubercle of the humerus
innervation: medial and lateral pectoral nerve C5-T1
actions: adduction, internal rotation
clavicular and sternocostal parts: flexion; assist in respiration when shoulders are fixed

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10
Q

Subclavius

A

origin: 1st ribs
inserts: inferior surface of clavicle
innervation: nerve to subclavius C5 C6
action: steadies the clavicle in the sternoclavicular joint

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11
Q

pectoralis minor

A

origin: 3rd to 5th ribs
insert: coracoid process
innervation: medical pectoral nerve C8-T1
action: draws scapula downwardly, causing inderior angle to move posteromedially; rotates glenoid inferiorly; assits in respiration

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12
Q

Serratus Anterior

A

origin: 1st to 9th ribs
inserts: medial border of scapula
innervation: long thoracic nerve C5-C7
action: superior part- lowers the raised arm
intermediate part- entire msucles—draws scapula laterally forward; elevate ribs when shoulder is fixed
inferior part: rotates scapula laterally

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13
Q

teres major

A

origin: inferior angle of scapula
insert: crest of lesser tubercle of the humerus
innervation: lower subscapular nerve C5-C7
action: internal rotation, adduction, extension

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14
Q

biceps

A

long head: origin- supraglenoid tubercle of scapula
short head: origin- coracoid process of scapula

insert: radial tuberosity
innervation: musculocutaneous nerve C5 C6
action at elbow joint: flexion and supination
shoulder joint: flexion, stabalization of humeral head during deltoid contractionl abduction and interal rotation of the humerus

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15
Q

Brachialis

A

origin: distal half of anterior surface
insert: ulnar tuberosity
innervation: musculocutaneous nerve C5-C6 and radial nerve C7 minor
action: flexion at elbow joint

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16
Q

Triceps brachii (3 parts)

A

long head: originates infraglenoid tubercle of scapula
medial head: originates posterior humerus, inferior to radial groove, medial intermuscular septum
lateral head: posterior humerus, proximal to radial groove; lateral intermuscular septum

all insert: olecranon of ulna
innervation: radial nerve C6-C8
action: at elbow- extension
at shoulder joint: long head- extension and adduction

17
Q

anconeus

A

origin: lateral epicondyle of humerus (variance; posterior joint capsule)
insert: radial surface on olecranon of ulna
inneration: radial nerve C6-C8
action: extends elbow and tightens its joint

18
Q

What muscles are innervated by the axillary nerve

A

detloid, teres minor

19
Q

what muscles are innervated by the musculocutaneous nerve C5 C6 and musculocutaneous C5-C7

A

biceps brachii
brachialis

and choracobrachialis

20
Q

Pronator Teres

A

Origin- humeral head: medial epicondyle of humerus
Ulnar head: coronoid process
insertion: lateral radius
innervation: medial nerve C6-C7
action: weak elbow flexor, forearm pronation

21
Q

Flexor carpi radialis

A

origin: medical epicondyle of humerus
insertion: base of 2nd metacarpal
innervation: medial nerve C7-C8
action: wrist flexion and hand abduction (radial deviation)

22
Q

Palmaris longus

A

origin: medial epicondyle
insertion: palmar aponeurosis
innervation: medial nerve C7-C8

23
Q

flexor carpi ulnaris

A

origin: humeral head: medial epicondyle
ulnar head: olecranon
insertion: pisiform, hook of hamate, base of 5th metacarpal
innervation: ulnar nerve C-T1
action: wrist flexion and hand adduction (ulnar deviation)

24
Q

flexor digitorum superficialis

A

origin- ulnar head: medial epicondyle of humerus
radial head: upper half of anterior border of radius
insertion: sides of middle phalanges of 2nd-5th digits
innervation: medial nerve C8-T1
action: weak elbow flexion, flexion of wrists, MCP, and PIP joints of 2nd to 5th digits

25
Q

flexor digitorum profundus

A

origin: ulnar and interosseous membrane
insertion: distal phalanges of 2nd and 5th digits (palmar surface)
innervation: medial nerve C8-T1 and ulnar nerve C8-T1
action: flexion of wrist, MCP, PIP, DIP of 2nd to 5th digits

26
Q

FLexor pollis longus

A

origin: mid anterior surface of radius and adjacent interosseous membrane
insertion: distal phalanx of thumb (palmar surface)
innervation: medial nerve C8-T1
action: wrist flexion and abduction of hand, flexion of thumb

27
Q

pronator quadrates

A

origin: distal quarter of ulna (anterior surface)
insertion: distal quarter of radius (anterior surface)
innervation: medial nerve C8-T1
action: pronation of hand, stabalization of radioulnar joint

28
Q

Brachio radialis

A

origin: distal humerus, lateral intermuscular septum
insertion: styloid process of radius
innervation: radial nerve C5-C6
action: elbow flexion, forearm semipronation

29
Q

Extensor Carpi Radialis Longus

A

origin: lateral supracondylar ridge of distal humerus, lateral intermuscular septum
insertion: 2nd metacarpal base
innervation: radial nerve C6-C7
action: weak elbow flexion, wrist extension and abduction

30
Q

Extensor Carpi Radialis Brevis

A

origin: lateral epicondyle of humerus
insertion: 3rd metacarpal base
innveration: radial nerve C7-C8
action: weak elbow flexion, wrist extension and abduction

31
Q

Extensor digitorum

A

origin: lateral epicondyle of humerus
insertion: dorsal digital expansion of 2nd - 5th digits
innervation: radial nerve C7-C8
action: wrist extension, extension and abduction of 2nd - 5th digits

32
Q

Extensor digiti minimi

A

origin: lateral epicondyle of humerus
insertion: dorsal digital expansion of 5th digit
innervation: radial nerve C7-C8
action: wrist extension, ulnar deviation (adduction), extension and abduction of 5th digit

33
Q

Extensor Carpi Ulnaris

A

origin: lateral epicondyle of humerus, dorsal surface of ulnar head
insertion: base of 5th metacarpal
innervation: radial nerve C7-C8
action: wrist extension, adduction of hand

34
Q

Abductor Pollicis Brevis

A

origin: scaphoid and trapezium
insertion: base proximal phlanax of thumb
innervation: median nerve
action: thumb abduction

35
Q

flexor pollicis brevis

A

origin: superficial head- flexor retinaculum
deep head: capitate and trapezium
insertion: base of proximal phalanx of thumb
innervation: superficial head- median nerve
deep head- ulnar nerve
action: thumb flexion

36
Q

Abductor Pollicis Longus

A

origin: dorsal surfaces of radius and ulna
insertion: base of 1st metacarpal
innervation: radial nerve C7-C8
action: abduction of hand at radiocarpal joint, abduction of thumb

37
Q

Extensor Pollicis Brevis

A

origin: posterior surface of radius and interosseous membrane
insertion: base of phalanx of thumb
innervation: radial nerve C7-C8
action: abduction of hand at radiocarpal joint, extension of thumb

38
Q

Extensor Pollicis Longus

A

origin: posterior surface of ulna and interosseous membrane
insertion: base of distal phlanx of thumb
innervation: radial nerve C7-C8
action: wrist extension and abduction of hand, adduction and extension of thumb

39
Q

supinator

A

origin: olecranon, lateral epicondyle of humerus, radial collateral ligament, annular ligament of radius
insertion: radius (between radial tuberosity and insertion of pronator teres)
innervation: radial nerce C6-C7
action: supination at radioulnar joints

Gross anatomy Exam 2 (1 decks)

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