Muscles 1 Flashcards
Muscles Week 1 (129 cards)
1
Q
Pectoralis minor Origin
A
Ribs 3-5 and overlying fascia
2
Q
Serratus anterior Origin
A
All or nearly all ribs
3
Q
Trapezius Origin
A
External occipital protuberance, medial one-third of superior nuchal line, nuchal ligament, lateral one-third of clavicle anterior rami of C3-C4 spinous processes of vertebrae C7-T3 or T4
4
Q
Levator scapulae Origin
A
Transverse processes of vertebrae C1-C4
5
Q
Rhomboid major Origin
A
Spinous processes of vertebrae T2-T5
6
Q
Rhomboid minor Origin
A
Spinous processes of vertebrae C7-T1, nuchal ligament
7
Q
Pectoralis major Origin
A
Medial half of clavicle, costal cartilages 1-7, aponeurosis of external oblique
8
Q
Latissimus dorsi Origin
A
Vertebrae T7-L5, lower three or four ribs, iliac crest, thoracolumbar fascia
9
Q
Deltoid Origin
A
Acromion and spine of scapula; clavicle
10
Q
Supraspinatus Origin
A
Supraspinous fossa of scapula
11
Q
Infraspinatus Origin
A
Infraspinous fossa of scapula
12
Q
Teres major Origin
A
Inferior angle of scapula
13
Q
Teres minor Origin
A
Lateral border and adjacent posterior surface of scapula
14
Q
Subscapularis Origin
A
Subscapular fossa of scapula
15
Q
Coracobrachialis Origin
A
Coracoid process
16
Q
Biceps brachii, short head Origin
A
coracoid process
17
Q
Biceps brachii, long head Origin
A
superior margin of glenoid cavity
18
Q
Brachialis Origin
A
Anterior surface of distal half of humerus
19
Q
Brachioradialis Origin
A
Lateral supracondylar ridge of humerus
20
Q
Triceps brachii, lateral head Origin
A
posterior surface of proximal end of humerus
21
Q
Triceps brachii, long head Origin
A
inferior margin of glenoid cavity and joint capsule
22
Q
Triceps brachii, medial head Origin
A
posterior surface of entire humeral shaft
23
Q
Anconeus Origin
A
Lateral epicondyle of humerus
24
Q
Pronator quadratus Origin
A
Anterior surface of distal ulna
25
Pronator teres Origin
Humeral shaft near medial epicondyle; coronoid process of ulna
26
Supinator Origin
Lateral epicondyle of humerus; supinator crest and fossa of ulna just distal to radial notch; anular and radial collateral ligaments of elbow
27
Flexor carpi radialis Origin
Medial epicondyle of humerus
28
Flexor carpi ulnaris Origin
Medial epicondyle of humerus; medial margin of olecranon; posterior surface of ulna
29
Palmaris longus Origin
Medial epicondyle of humerus
30
Extensor carpi radialis longus Origin
Lateral supracondylar ridge of humerus
31
Extensor carpi radialis brevis Origin
Lateral epicondyle of humerus
32
Extensor carpi ulnaris Origin
Lateral epicondyle of humerus; posterior surface of ulnar shaft
33
Extensor digitorum Origin
Lateral epicondyle of humerus
34
Rectus abdominis Origin
Pubic symphysis and superior margin of pubis
35
Erector Spinae Origin
Nuchal ligament, ribs 3-12, thoracic and lumbar vertebrae, median and lateral sacral crests, thoracolumbar fascia
36
Semispinalis thoracis Origin
Vertebrae T6-T10
37
Multifidus Origin
Vertebrae C4-L5, posterior superior iliac spine, sacrum, aponeurosis of erector spinae
38
Quadratus lumborum Origin
Iliac crest, iliolumbar ligament
39
External oblique Origin
Ribs 5-12
40
Internal oblique Origin
Inguinal ligament, iliac crest, and thoracolumbar fascia
41
Transverse abdominis Origin
Inguinal ligament, iliac crest, thoracolumbar fascia, costal cartilages 7-12
42
External intercostals Origin
Inferior margins of ribs 1-11
43
Internal intercostals Origin
Superior margins and costal cartilages of ribs 2-12; margin of sternum
44
Pectoralis minor Insertion
Coracoid process of scapula
45
Serratus anterior Insertion
Medial border of scapula
46
Trapezius Insertion
Acromion and spine of scapula, lateral one-third of clavicle
47
Levator scapulae Insertion
Superior angle to medial border of scapula
48
Rhomboid major Insertion
Medial border of scapula
49
Rhomboid minor Insertion
Medial border of scapula
50
Pectoralis major Insertion
Lateral lip of intertubercular sulcus of humerus
51
Latissimus dorsi Insertion
Floor of intertubercular sulcus of humerus
52
Deltoid Insertion
Deltoid tuberosity of humerus
53
Supraspinatus Insertion
Greater tubercle of humerus
54
Infraspinatus Insertion
Greater tubercle of humerus
55
Teres major Insertion
Medial lip of intertubercular sulcus of humerus
56
Teres minor Insertion
Greater tubercle of humerus; posterior surface of joint capsule
57
Subscapularis Insertion
Lesser tubercle of humerus, anterior surface of joint capsule
58
Coracobrachialis Insertion
Medial aspect of humeral shaft
59
Biceps brachii, short head Insertion
Tuberosity of radius, fascia of forearm
60
Biceps brachii, long head Insertion
Tuberosity of radius, fascia of forearm
61
Brachialis Insertion
Coronoid process and tuberosity of ulna
62
Brachioradialis Insertion
Lateral surface of radius near styloid process
63
Triceps brachii, lateral head Insertion
Olecranon, fascia of forearm
64
Triceps brachii, long head Insertion
Olecranon, fascia of forearm
65
Triceps brachii, medial head Insertion
Olecranon, fascia of forearm
66
Anconeus Insertion
Olecranon and posterior surface of ulna
67
Pronator quadratus Insertion
Anterior surface of distal radius
68
Pronator teres Insertion
Lateral surface of radial shaft
69
Supinator Insertion
Proximal one-third of radius
70
Flexor carpi radialis Insertion
Base of metacarpals II-III
71
Flexor carpi ulnaris Insertion
Pisiform, hamate, metacarpal V
72
Palmaris longus Insertion
Flexor retinaculum, palmar aponeurosis
73
Extensor carpi radialis longus Insertion
Base of metacarpal II
74
Extensor carpi radialis brevis Insertion
Base of metacarpal III
75
Extensor carpi ulnaris Insertion
Base of metacarpal V
76
Extensor digitorum Insertion
Dorsal surfaces of phalanges II-V
77
Rectus abdominis Insertion
Xiphoid process, costal cartilages 5-7
78
Erector Spinae Insertion
Mastoid process, cervical and thoracic vertebrae, and all ribs
79
Semispinalis thoracis Insertion
Vertebrae C6-T4
80
Multifidus Insertion
Laminae and spinous processes of vertebrae superior to origins
81
Quadratus lumborum Insertion
Rib 12 and vertebrae L1-L4
82
External oblique Insertion
Anterior half of iliac crest, pubic symphysis, and superior margin of pubis
83
Internal oblique Insertion
Ribs 10-12, costal cartilages 7-10, pubis
84
Transverse abdominis Insertion
Linea alba, pubis, aponeurosis of internal oblique
85
External intercostals Insertion
Superior margin of next lower rib
86
Internal intercostals Insertion
Inferior margin of next higher rib
87
Pectoralis minor Action
With serratus anterior, draws scapula laterally and forward around chest wall; with other muscles, rotates scapula and depresses apex of shoulder, as in reaching down to pick up a suitcase
88
Serratus anterior Action
With pectoralis minor, draws scapula laterally and forward around chest wall; protracts scapula, and is the prime mover in all forward-reaching and pushing actions; aids in rotating scapula to elevate apex of shoulder; fixes scapula during abduction of arm
89
Trapezius Action
Stabilizes scapula and shoulder during arm movements; elevates and depresses apex of shoulder; acts with other muscles to rotate and retract scapula
90
Levator scapulae Action
Elevates scapula if cervical vertebrae are fixed; flexes neck laterally if scapula is fixed; retracts scapula and braces shoulder; rotates scapula and depresses apex of shoulder
91
Rhomboid major Action
Retracts scapula and braces shoulder; fixes scapula during arm movements
92
Rhomboid minor Action
Retracts scapula and braces shoulder; fixes scapula during arm movements
93
Pectoralis major Action
Flexes, adducts, and medially rotates humerus, as in climbing or hugging. Aids in deep inspiration.
94
Latissimus dorsi Action
Adducts and medially rotates humerus; extends the shoulder joint as in pulling on the oars of a rowboat; produces backward swing of arm in such actions as walking and bowling; with hands grasping overhead objects, pulls body forward and upward, as in climbing; aids in deep inspiration, sudden expiration such as sneezing and coughing, and prolonged forceful expiration as in singing or blowing a sustained note on a wind instrument
95
Deltoid Action
Anterior fibers flex and medially rotate arm; lateral fibers abduct arm; posterior fibers extend and laterally rotate arm; involved in arm swinging during such actions as walking or bowling, and in adjustment of hand height for various manual tasks
96
Supraspinatus Action
Aids deltoid in abduction of arm; resists downward slippage of humeral head when arm is relaxed or when carrying weight
97
Infraspinatus Action
Modulates action of deltoid, preventing humeral head from sliding upward; rotates humerus laterally
98
Teres major Action
Extends and medially rotates humerus; contributes to arm swinging
99
Teres minor Action
Modulates action of deltoid, preventing humeral head from sliding upward as arm is abducted; rotates humerus laterally
100
Subscapularis Action
Modulates action of deltoid, preventing humeral head from sliding upward as arm is abducted; rotates
101
Coracobrachialis Action
Flexes and medially rotates arm; resists deviation of arm from frontal plane during abduction
102
Biceps brachii, short head Action
Rapid or forceful supination of forearm; synergist in elbow flexion; slight shoulder flexion; tendon of long head stabilizes shoulder by holding humeral head against glenoid cavity
103
Biceps brachii, long head Action
Rapid or forceful supination of forearm; synergist in elbow flexion; slight shoulder flexion; tendon of long head stabilizes shoulder by holding humeral head against glenoid cavity
104
Brachialis Action
Prime mover of elbow flexion
105
Brachioradialis Action
Flexes elbow
106
Triceps brachii, lateral head Action
Extends elbow
107
Triceps brachii, long head Action
Extends elbow; long head extends and adducts humerus
108
Triceps brachii, medial head Action
Extends elbow
109
Anconeus Action
Extends elbow; may help to control ulnar movement during pronation
110
Pronator quadratus Action
Prime mover of forearm pronation; also resists separation of radius and ulna when force is applied to forearm through wrist, as in doing push-ups
111
Pronator teres Action
Assists pronator quadratus in pronation, but only in rapid or forceful action; weakly flexes elbow
112
Supinator Action
Supinates forearm
113
Flexor carpi radialis Action
Flexes wrist anteriorly; aids in radial flexion of wrist
114
Flexor carpi ulnaris Action
Flexes wrist anteriorly; aids in ulnar flexion of wrist
115
Palmaris longus Action
Anchors skin and fascia of palmar region; resists shearing forces when stress is applied to skin by such actions as climbing and tool use.
116
Extensor carpi radialis longus Action
Extends wrist; aids in radial flexion of wrist
117
Extensor carpi radialis brevis Action
Extends wrist; aids in radial flexion of wrist
118
Extensor carpi ulnaris Action
Extends and fixes wrist when fist is clenched or hand grips an object; aids in ulnar flexion of wrist
119
Extensor digitorum Action
Extends wrist, metacarpophalangeal, and interphalangeal joints; tends to spread digits apart when extending metacarpophalangeal joints
120
Rectus abdominis Action
Flexes lumbar region of vertebral column, producing forward bending at the waist
121
Erector Spinae Action
Extension and lateral flexion of vertebral column; the longissimus capitis also produces ipsilateral rotation of the head.
122
Semispinalis thoracis Action
Extension and contralateral rotation of vertebral column
123
Multifidus Action
Stabilization of adjacent vertebrae, maintenance of posture, control of vertebral movement when erector spinae acts on vertebral column
124
Quadratus lumborum Action
Aids respiration by fixing rib 12 and stabilizing inferior attachments of diaphragm. Unilateral contraction causes ipsilateral flexion of lumbar vertebral column; bilateral contraction extends lumbar vertebral column.
125
External oblique Action
Supports abdominal viscera against pull of gravity; stabilizes vertebral column during heavy lifting; maintains posture; compresses abdominal organs, thus aiding in forceful expiration of contents during childbirth, urination, defecation, and vomiting; unilateral contraction causes contralateral rotation of waist
126
Internal oblique Action
Supports abdominal viscera against pull of gravity; stabilizes vertebral column during heavy lifting; maintains posture; compresses abdominal organs, thus aiding in forceful expiration of contents during childbirth, urination, defecation, and vomiting; unilateral contraction causes ipsilateral rotation of waist
127
Transverse abdominis Action
Compresses abdominal contents, with same effects as external oblique, but does not contribute to movements of vertebral column
128
External intercostals Action
When scalenes fix rib 1, external intercostals elevate and protract ribs 2-12, expanding the thoracic cavity and creating a partial vacuum causing inflow of air; exercise a braking action during expiration so that expiration is not overly abrupt
129
Internal intercostals Action
In inspiration, the intercartilaginous part aids in elevating the ribs and expanding the thoracic cavity; in expiration, the interosseous part depresses and retracts the ribs, compressing the thoracic cavity and expelling air; the latter occurs only only in forceful expiration, not in relaxed breathing
