Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

my gross anatomy exam 2 > Chapter 2 muscles > Flashcards

Chapter 2 muscles Flashcards

(69 cards)

Start Studying
1
Q

supraspinatus

A

O: scapula-supraspinous fossa
I: humerus- superior facet of the greater tubercle
N: suprascapular nerve (C4-C6)
A: initiates abduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

infraspinatus

A

O: scapula-infraspinous fossa
I: humerus-middle facet of greater tubercle
N: suprascapular nerve (C4-C6)
A: external rotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Teres minor

A

O: scapula-lateral
I: humerus-inferior facet of the greater tubercle
N: axillary nerve (C5, C6)
A: external rotation, weak adduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Subscapularis

A

O: scapula-subscapular fossa
I: humerus- lesser tubercle
N: subscapular nerve (C5, C6)
A: internal rotation (resist upward pull of deltoid on glenoid cavity)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the rotator cuff muscles?

A

Supraspinatus
Infraspinatus
teres minor
Subscapularis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Teres major

A

O: scapula (inferior angle)
I: crest of lesser tubercle of the humerus
N: lower subscapular nerve (C5-C7)
A: internal rotation, adduction, extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

deltoid-clavicular part (anterior deltoid)

A

O: lateral 1/3 of clavicle
I: humerus (deltoid tuberosity)
N: axillary nerve (C5, C6)
A: flexion, internal rotation, adduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

deltoid-acromial part (middle deltoid)

A

O: acromion
I: humerus (deltoid tuberosity)
N: axillary nerve (C5, C6)
A: abduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

deltoid-spinal part (posterior deltoid)

A

O: scapular spine
I: humerus (deltoid tuberosity)
N: axillary nerve (C5, C6)
A: extension, external rotation, adduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

latsissimus dorsi, trapezius, rhomboids, levator scapula

A

OINA review

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

pectoralis major- clavicular part

A

O: clavicle (medial half)
I: humerus (crest of greater tubercle)
N: Medial and lateral pectoral nerves (C5-T1)
A: entire muscle-adduction, internal rotation
clavicular part: flexion; assist in respiration when shoulder is fixed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

pectoralis major -sternocostal part

A

O: sternum and costal cartilages 1-6
I: humerus (crest of greater tubercle)
N: medial and lateral pectoral nerves (C5-T1)
A: entire muscle: adduction, internal rotation
sternocostal part: flexion, assist in respiration when shoulder is fixed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

pectoralis major-abdominal part

A

O: rectus sheath (anterior layer)
I: humerus (crest of greater tubercle)
N: medial and lateral pectoral nerves (C5-T1)
A: entire muscle-adduction, internal rotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

pectoralis minor

A 
O: 3rd to 5th ribs 
I: coracoid process
N: medial pectoral nerves (C8, T1)
A: draws scapula downward, causing inferior angle to move posteromedially; 
rotates glenoid inferiorly; 
assists in respiration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

serratus anterior- superior part

A

O: 1st to 9th ribs
I: scapula (medial border)
N: long thoracic nerve (C5-C7)
A: superior part- lowers the raised arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

serratus anterior -intermediate part

A

O: 1st to 9th ribs
I: scapula (medial border)
N: long thoracic nerve (C5-C7)
A: entire muscle-draws scapula laterally forward; elevates ribs when shoulder is fixed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

serratus anterior-inferior part

A

O: 1st to 9th ribs
I: Scapula (medial border)
N: long thoracic nerve (C5-C7)
A: inferior part-rotates scapula laterally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

subclavius

A

O: 1st rib
I: clavicle (inferior surface)
N: nerve to subclavius (C5, C6)
A: steadies the clavicle in the sternoclavicular joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

scalene posterior

A

O: posterior tubercles of transverse processes of C5-C7
I: 2nd rib (outer surface)
N: direct branches from cervical and brachial plexus (C3-C8)
A: ribs mobile- elevate upper ribs (during forced inspiration)
ribs fixed- BILATERALLY: flexes neck;
UNILATERALLY: bends cervical spine to same side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

scalene middle

A

O: C1-C2 transverse processes; posterior tubercles of transverse tubercles of transverse processes
I: 1st rib, posterior to the groove for subclavian artery
N: direct branches from cervical and brachial plexus (C3-C8)
A: ribs mobile- elevate upper ribs (during forced inspiration)
ribs fixed- BILATERALLY: flexes neck;
UNILATERALLY: bends cervical spine to same side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

scalene anterior

A

O: anterior tubercles of transverse processes C3-C6
I: scalene tubercles of 1st rib
N: direct branches from cervical and brachial plexus (C3-C8)
A: ribs mobile- elevate upper ribs (during forced inspiration)
ribs fixed- BILATERALLY: flexes neck;
UNILATERALLY: bends cervical spine to same side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

biceps brachii long head

A 
O: supraglenoid tubercle of scapula 
I: radial tuberosity 
N: musculocutaneous nerve (C5-C6)
A: elbow joint- flexion; supination 
shoulder joint- flexion; stabilization of humeral head during deltoid contraction; abduction and internal rotation of the humerus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

biceps brachii short head

A 
O: coracoid process of scapula
I: radial tuberosity
N: musculocutaneous nerve (C5-C6)
A: elbow joint- flexion; supination
shoulder joint- flexion; stabilization of humeral head during deltoid contraction; abduction and internal rotation of the humerus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

choracobrachialis

A

O: scapula (coracoid process)
I: humerus (in line with crest of lesser tuberosity)
N: musculocutaneous nerve (C5-C7)
A: flexion, adduction, internal rotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
brachialis
O: humerus (distal half of anterior surface) I: ulnar tuberosity N: musculocutaneous nerve (C5-C6) and radial nerve (C7, minor) A: flexion at the elbow joint
25
triceps brachii long head
``` O: scapula (infraglenoid tubercle) I: olecranon of ulna N: radial nerve (C6-C8) A: elbow joint- extension shoulder joint, long head- extension and adduction ```
26
triceps brachii medial head
O: posterior humerus, inferior to radial groove; medial intermuscular septum I: olecranon of ulna N: radial nerve (C6-C8) A: elbow joint- extension
27
triceps brachii lateral head
O: posterior humerus, proximal to radial groove; lateral intermuscular septum I: olecrenon of ulna N: radial nerve (C6-C8) A: elbow joint
28
brachioradialis
``` O: distal humerus (distal surface), lateral intermuscular septum I: styloid process of the radius N: radial nerve (C5, C6) A: elbow-flexion forearm-semipronation ```
29
extensor carpi radialis longus
``` O: lateral supracondylar ridge of distal humerus, lateral intermuscular septum I: base of 2nd metacarpal N: radial nerve (C6, C7) A: elbow- weak flexion wrist- extension and abduction ```
30
extensor carpi radialis brevis
``` O: lateral epicondyle of humerus I: base of 3rd metacarpal N: radial nerve (C7, C8) A: elbow-weak flexion wrist- extension ```
31
extensor digitorum
O: common head (lateral epicondyle of humerus) I: dorsal digital expansion of 2nd to 5th digits N: radial nerve (C7,C8) A: wrist-extension MCP, PIP, and DIP of 2nd to 5th digits- extension/abduction of fingers
32
extensor digiti minimi
O: common head (lateral epicondyle of humerus) I: dorsal digital expansion of 5th digit N: radial nerve (C7, C8) A: wrist- extension, ulnar abduction of hand MCP, PIP, and DIP of 5th digit-extension and abduction of 5th digit
33
extensor carpi ulnaris
O: common head (lateral epicondyle of humerus), ulnar head (dorsal surface) I: base of 5th metacarpal N: radial nerve (C7, C8) A: wrist- extension, adduction (ulnar deviation) of hand
34
abductor pollicis longus
O: radius and ulna (dorsal surfaces, interosseous membrane) I: base of 1st metacarpal N: radial nerve (C7, C8) A: radiocarpal joint- abduction of the hand carpometacarpal joint of thumb- abduction
35
extensor pollicis brevis
O: radius (posterior surface) and interosseous membrane I: base of proximal phalanx of thumb N: radial nerve (C7, C8) A: radiocarpal joint- abduction (radial deviation) of hand carpometacarpal and MCP of thumb- extension
36
extensor pollicis longus
O: ulna (posterior surface) and interosseous membrane I: base of distal phalanx of thumb N: radial nerve (C7, C8) A: wrist- extension and abduction (radial deviation) of hand carpometacarpal of thumb- adduction MCP and IP of thumb: extension
37
extensor indicis
O: ulna (posterior surface) and interosseous membrane I: posterior digital extension of 2nd digit N: radial nerve (C7, C8) A: wrist- extension MCP, PIP, and DIP of 2nd digit- extension
38
supinator
O: olecranon, lateral epicondyle of humerus, radial collateral ligament, annular ligament of radius I: radius between radial tuberosity and insertion of pronator teres) N: radius nerve (C6, C7) A: radioulnar joints-supination
39
Pronator teres
O: humeral head-medial epicondyle of humerus ulnar head-coronoid process I: lateral radius (distal to supinator insertion) N: median nerve (C6, C7) A: elbow- weak flexor forearm-pronation
40
flexor carpi radialis
O: medial epicondyle of humerus I: base of 2nd metacarpal (variance: base of 3rd metacarpal) N: median nerve (C6, C7) A: wrist- flexion and abduction (radial deviation) of hand
41
palmaris longus
``` O: medial epicondyle of humerus I: palmar aponeurosis N: median nerve (C7, C8) A: elbow- weak flexion wrist- flexion tightens palmar aponeurosis ```
42
flexor carpi ulnaris
O: humeral head- medial epicondyle ulnar head- olecranon I: pisiform, hook of hamate, base of 5th metacarpal N: ulnar nerve (C7-T1) A: wrist- flexion and adduction (ulnar deviation) of hand
43
what are the superficial muscles of the anterior compartment of the arm?
Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris
44
flexor digitorum superficialis
O: humeral-ulnar head -medial epicondyle of humerus radial head- upper half of anterior border of radius I: sides of middle phalanges of 2nd to 5th digits N: median nerve (C8, T1) A: elbow-weak flexor wrist, MCP, and PIP joints of 2nd to 5th digits- flexion
45
what are the intermediate muscles of the anterior compartment of the forearm?
flexor digitorum superficialis
46
flexor pollicis longus
O: radius (midanterior surface) and adjacent interosseous membrane) I: distal phalanx of thumb (palmar surface) N: median nerve (C8, T1) A: wrist- flexion and abduction (radial deviation) of hand carpometacarpal of thumb- flexion MCP and IP of thumb- flexion
47
flexor digitorum profundus
O: ulna (proximal 2/3 of flexor surface) and interosseous membrane I: distal phalanges of 2nd to 5th digits (palmar surface) N: median nerve (C8, T1) and ulnar nerve (C8, T1) A: wrist, MCP, PIP, and DIP of 2nd to 5th digits- flexion
48
pronator quadrates
O: distal quarter of ulna (anterior surface) I: distal quarter of radius (anterior surface) N: median nerve (C8, T1) A: wrist-pronation distal radioulnar joint- stabilization
49
abductor pollicis brevis
O: scaphoid bone and trapezium, flexor retinaculum I: thumb (base of proximal phalange) via the radial sesamoid N: median nerve C8, T1 A: CMC joint of thumb- abduction
50
flexor pollicis brevis -superficial head
O: flexor retinaculum I: thumb (base of proximal phalanx) via the radial sesamoid N: median nerve C8, T1 A: CMC joint of thumb- flexion
51
flexor pollicis brevis -deep head
O: capitate bone, trapezium I: thumb (base of proximal phalanx) via the radial sesamoid N: ulnar nerve C8, T1 A: CMC joint of thumb- flexion
52
opponens pollicis
O: trapezium I: first metacarpal (radial border) N: median nerve C8, T1 A: CMC joint of thumb: opposition
53
what are the thenar muscles?
adductor pollicis abductor pollicis brevis flexor pollicis brevis opponens pollicis
54
abductor digiti minimi
O: pisiform bone I: 5th proximal phalanx (ulnar base) and dorsal digital expansion of 5th digit N: ulnar nerve C8, T1 A: MCP joint of little finger- flexion and abduction of little finger PIP and DIP joints of little finger- extension
55
flexor digiti minimi brevis
O: hook of hamate, flexor retinaculum I: 5th proximal phalanx (base) N: ulnar nerve C8, T1 A: MCP joint of little finger-flexion
56
opponens digiti minimi
O: hook of hamate, flexor retinaculum I: 5th metacarpal (ulnar border) N: ulnar nerve C8, T1 A: draws metacarpal in palmar direction (opposition)
57
what are the hypothenar muscles?
opponens digiti minimi flexor digiti minimi brevis abductor digiti minimi palmaris brevis
58
lumbricals-1
``` O: tendons of flexor digitorum profundus (radial sides) I: 2nd digit (dde) N: median nerve C8,T1 A: (2nd to 5th digits) MCP joints- flexion proximal and distal IP joints- extension ```
59
lumbricals-2
``` O: tendons of flexor digitorum profundus (radial sides) I: 3rd digit (dde) N: median nerve C8,T1 A: (2nd to 5th digits) MCP joints- flexion proximal and distal IP joints- extension ```
60
lumbricals-3
``` O: tendons of flexor digitorum profundus (bipennate form medial and lateral sides) I: 4th digit (dde) N: ulnar nerve (C8, T1) A: (2nd to 5th digits) MCP joints- flexion proximal and distal IP joints- extension ```
61
lumbricals-4
``` O: tendons of flexor digitorum profundus (bipennate from medial nad lateral sides) I: 5th digit (dde) N: ulnar nerve (C8, T1) A: (2nd to 5th digits) MCP joints- flexion proximal and distal IP joints- extension ```
62
dorsal interossei-1
O: 1st and 2nd metacarpals (adjacent sides, two heads) I: 2nd digit (dde) and 2nd proximal phalanx (radial side) N: ulnar nerve (C8, T1) A: (2nd to 4th digits) MCP joints- flexion proximal and distal IP joints- extension and abduction from 3rd digit
63
dorsal interossei -2
O: 2nd and 3rd metacarpals (adjacent sides, two heads) I: 3rd digit (dde) and 3rd proximal phalanx (radial side) N: ulnar nerve (C8, T1) A: (2nd to 4th digits) MCP joints- flexion proximal and distal IP joints- extension and abduction from 3rd digit
64
dorsal interossei- 3
O: 3rd and 4th metacarpals (adjacent sides, two heads) I: 3rd digit (dde) and 3rd proximal phalanx (ulnar side) N: ulnar nerve (C8, T1) A: (2nd to 4th digits) MCP joints- flexion proximal and distal IP joints- extension and abduction from 3rd digit
65
dorsal interossei-4
O: 4th and 5th metacarpals (adjacent sides, two heads) I: 4th digit (dde) and 4th proximal phalanx (ulnar side) N: ulnar nerve (C8, T1) A: (2nd to 4th digits) MCP joints- flexion proximal and distal IP joints- extension and abduction from 3rd digit
66
palmar interossei-1
O: 2nd metacarpal (ulnar side) I: 2nd digit (dde) and 2nd proximal phalanx (base) N: ulnar nerve C8,T1 A: (2nd, 4th, and 5th digits) MCP joints- flexion Proximal and distal IP joints- extension and adduction towards 3rd digit
67
palmar interossei -2
O: 4th metacarpal (ulnar side) I: 4th digit (dde) and 4th proximal phalanx (base) N: ulnar nerve C8,T1 A: (2nd, 4th, and 5th digits) MCP joints- flexion Proximal and distal IP joints- extension and adduction towards 3rd digit
68
palmar interossei-3
O: 5th metacarpal (ulnar side) I: 4th digit (dde) and 4th proximal phalanx (base) N: ulnar nerve C8,T1 A: (2nd, 4th, and 5th digits) MCP joints- flexion Proximal and distal IP joints- extension and adduction towards 3rd digit

my gross anatomy exam 2 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions