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Biology > Muscles 1 > Flashcards

Muscles 1 Flashcards

Muscles Week 1

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1
Q

Pectoralis minor Origin

A

Ribs 3-5 and overlying fascia

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2
Q

Serratus anterior Origin

A

All or nearly all ribs

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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

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4
Q

Levator scapulae Origin

A

Transverse processes of vertebrae C1-C4

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5
Q

Rhomboid major Origin

A

Spinous processes of vertebrae T2-T5

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6
Q

Rhomboid minor Origin

A

Spinous processes of vertebrae C7-T1, nuchal ligament

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7
Q

Pectoralis major Origin

A

Medial half of clavicle, costal cartilages 1-7, aponeurosis of external oblique

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8
Q

Latissimus dorsi Origin

A

Vertebrae T7-L5, lower three or four ribs, iliac crest, thoracolumbar fascia

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9
Q

Deltoid Origin

A

Acromion and spine of scapula; clavicle

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10
Q

Supraspinatus Origin

A

Supraspinous fossa of scapula

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11
Q

Infraspinatus Origin

A

Infraspinous fossa of scapula

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12
Q

Teres major Origin

A

Inferior angle of scapula

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13
Q

Teres minor Origin

A

Lateral border and adjacent posterior surface of scapula

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14
Q

Subscapularis Origin

A

Subscapular fossa of scapula

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15
Q

Coracobrachialis Origin

A

Coracoid process

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16
Q

Biceps brachii, short head Origin

A

coracoid process

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17
Q

Biceps brachii, long head Origin

A

superior margin of glenoid cavity

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18
Q

Brachialis Origin

A

Anterior surface of distal half of humerus

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19
Q

Brachioradialis Origin

A

Lateral supracondylar ridge of humerus

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20
Q

Triceps brachii, lateral head Origin

A

posterior surface of proximal end of humerus

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21
Q

Triceps brachii, long head Origin

A

inferior margin of glenoid cavity and joint capsule

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22
Q

Triceps brachii, medial head Origin

A

posterior surface of entire humeral shaft

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23
Q

Anconeus Origin

A

Lateral epicondyle of humerus

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24
Q

Pronator quadratus Origin

A

Anterior surface of distal ulna

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25
Q

Pronator teres Origin

A

Humeral shaft near medial epicondyle; coronoid process of ulna

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26
Q

Supinator Origin

A

Lateral epicondyle of humerus; supinator crest and fossa of ulna just distal to radial notch; anular and radial collateral ligaments of elbow

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27
Q

Flexor carpi radialis Origin

A

Medial epicondyle of humerus

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28
Q

Flexor carpi ulnaris Origin

A

Medial epicondyle of humerus; medial margin of olecranon; posterior surface of ulna

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29
Q

Palmaris longus Origin

A

Medial epicondyle of humerus

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30
Q

Extensor carpi radialis longus Origin

A

Lateral supracondylar ridge of humerus

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31
Q

Extensor carpi radialis brevis Origin

A

Lateral epicondyle of humerus

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32
Q

Extensor carpi ulnaris Origin

A

Lateral epicondyle of humerus; posterior surface of ulnar shaft

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33
Q

Extensor digitorum Origin

A

Lateral epicondyle of humerus

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34
Q

Rectus abdominis Origin

A

Pubic symphysis and superior margin of pubis

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35
Q

Erector Spinae Origin

A

Nuchal ligament, ribs 3-12, thoracic and lumbar vertebrae, median and lateral sacral crests, thoracolumbar fascia

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36
Q

Semispinalis thoracis Origin

A

Vertebrae T6-T10

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37
Q

Multifidus Origin

A

Vertebrae C4-L5, posterior superior iliac spine, sacrum, aponeurosis of erector spinae

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38
Q

Quadratus lumborum Origin

A

Iliac crest, iliolumbar ligament

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39
Q

External oblique Origin

A

Ribs 5-12

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40
Q

Internal oblique Origin

A

Inguinal ligament, iliac crest, and thoracolumbar fascia

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41
Q

Transverse abdominis Origin

A

Inguinal ligament, iliac crest, thoracolumbar fascia, costal cartilages 7-12

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42
Q

External intercostals Origin

A

Inferior margins of ribs 1-11

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43
Q

Internal intercostals Origin

A

Superior margins and costal cartilages of ribs 2-12; margin of sternum

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44
Q

Pectoralis minor Insertion

A

Coracoid process of scapula

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45
Q

Serratus anterior Insertion

A

Medial border of scapula

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46
Q

Trapezius Insertion

A

Acromion and spine of scapula, lateral one-third of clavicle

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47
Q

Levator scapulae Insertion

A

Superior angle to medial border of scapula

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48
Q

Rhomboid major Insertion

A

Medial border of scapula

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49
Q

Rhomboid minor Insertion

A

Medial border of scapula

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50
Q

Pectoralis major Insertion

A

Lateral lip of intertubercular sulcus of humerus

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51
Q

Latissimus dorsi Insertion

A

Floor of intertubercular sulcus of humerus

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52
Q

Deltoid Insertion

A

Deltoid tuberosity of humerus

53
Q

Supraspinatus Insertion

A

Greater tubercle of humerus

54
Q

Infraspinatus Insertion

A

Greater tubercle of humerus

55
Q

Teres major Insertion

A

Medial lip of intertubercular sulcus of humerus

56
Q

Teres minor Insertion

A

Greater tubercle of humerus; posterior surface of joint capsule

57
Q

Subscapularis Insertion

A

Lesser tubercle of humerus, anterior surface of joint capsule

58
Q

Coracobrachialis Insertion

A

Medial aspect of humeral shaft

59
Q

Biceps brachii, short head Insertion

A

Tuberosity of radius, fascia of forearm

60
Q

Biceps brachii, long head Insertion

A

Tuberosity of radius, fascia of forearm

61
Q

Brachialis Insertion

A

Coronoid process and tuberosity of ulna

62
Q

Brachioradialis Insertion

A

Lateral surface of radius near styloid process

63
Q

Triceps brachii, lateral head Insertion

A

Olecranon, fascia of forearm

64
Q

Triceps brachii, long head Insertion

A

Olecranon, fascia of forearm

65
Q

Triceps brachii, medial head Insertion

A

Olecranon, fascia of forearm

66
Q

Anconeus Insertion

A

Olecranon and posterior surface of ulna

67
Q

Pronator quadratus Insertion

A

Anterior surface of distal radius

68
Q

Pronator teres Insertion

A

Lateral surface of radial shaft

69
Q

Supinator Insertion

A

Proximal one-third of radius

70
Q

Flexor carpi radialis Insertion

A

Base of metacarpals II-III

71
Q

Flexor carpi ulnaris Insertion

A

Pisiform, hamate, metacarpal V

72
Q

Palmaris longus Insertion

A

Flexor retinaculum, palmar aponeurosis

73
Q

Extensor carpi radialis longus Insertion

A

Base of metacarpal II

74
Q

Extensor carpi radialis brevis Insertion

A

Base of metacarpal III

75
Q

Extensor carpi ulnaris Insertion

A

Base of metacarpal V

76
Q

Extensor digitorum Insertion

A

Dorsal surfaces of phalanges II-V

77
Q

Rectus abdominis Insertion

A

Xiphoid process, costal cartilages 5-7

78
Q

Erector Spinae Insertion

A

Mastoid process, cervical and thoracic vertebrae, and all ribs

79
Q

Semispinalis thoracis Insertion

A

Vertebrae C6-T4

80
Q

Multifidus Insertion

A

Laminae and spinous processes of vertebrae superior to origins

81
Q

Quadratus lumborum Insertion

A

Rib 12 and vertebrae L1-L4

82
Q

External oblique Insertion

A

Anterior half of iliac crest, pubic symphysis, and superior margin of pubis

83
Q

Internal oblique Insertion

A

Ribs 10-12, costal cartilages 7-10, pubis

84
Q

Transverse abdominis Insertion

A

Linea alba, pubis, aponeurosis of internal oblique

85
Q

External intercostals Insertion

A

Superior margin of next lower rib

86
Q

Internal intercostals Insertion

A

Inferior margin of next higher rib

87
Q

Pectoralis minor Action

A

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
Q

Serratus anterior Action

A

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
Q

Trapezius Action

A

Stabilizes scapula and shoulder during arm movements; elevates and depresses apex of shoulder; acts with other muscles to rotate and retract scapula

90
Q

Levator scapulae Action

A

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
Q

Rhomboid major Action

A

Retracts scapula and braces shoulder; fixes scapula during arm movements

92
Q

Rhomboid minor Action

A

Retracts scapula and braces shoulder; fixes scapula during arm movements

93
Q

Pectoralis major Action

A

Flexes, adducts, and medially rotates humerus, as in climbing or hugging. Aids in deep inspiration.

94
Q

Latissimus dorsi Action

A

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
Q

Deltoid Action

A

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
Q

Supraspinatus Action

A

Aids deltoid in abduction of arm; resists downward slippage of humeral head when arm is relaxed or when carrying weight

97
Q

Infraspinatus Action

A

Modulates action of deltoid, preventing humeral head from sliding upward; rotates humerus laterally

98
Q

Teres major Action

A

Extends and medially rotates humerus; contributes to arm swinging

99
Q

Teres minor Action

A

Modulates action of deltoid, preventing humeral head from sliding upward as arm is abducted; rotates humerus laterally

100
Q

Subscapularis Action

A

Modulates action of deltoid, preventing humeral head from sliding upward as arm is abducted; rotates

101
Q

Coracobrachialis Action

A

Flexes and medially rotates arm; resists deviation of arm from frontal plane during abduction

102
Q

Biceps brachii, short head Action

A

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
Q

Biceps brachii, long head Action

A

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
Q

Brachialis Action

A

Prime mover of elbow flexion

105
Q

Brachioradialis Action

A

Flexes elbow

106
Q

Triceps brachii, lateral head Action

A

Extends elbow

107
Q

Triceps brachii, long head Action

A

Extends elbow; long head extends and adducts humerus

108
Q

Triceps brachii, medial head Action

A

Extends elbow

109
Q

Anconeus Action

A

Extends elbow; may help to control ulnar movement during pronation

110
Q

Pronator quadratus Action

A

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
Q

Pronator teres Action

A

Assists pronator quadratus in pronation, but only in rapid or forceful action; weakly flexes elbow

112
Q

Supinator Action

A

Supinates forearm

113
Q

Flexor carpi radialis Action

A

Flexes wrist anteriorly; aids in radial flexion of wrist

114
Q

Flexor carpi ulnaris Action

A

Flexes wrist anteriorly; aids in ulnar flexion of wrist

115
Q

Palmaris longus Action

A

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
Q

Extensor carpi radialis longus Action

A

Extends wrist; aids in radial flexion of wrist

117
Q

Extensor carpi radialis brevis Action

A

Extends wrist; aids in radial flexion of wrist

118
Q

Extensor carpi ulnaris Action

A

Extends and fixes wrist when fist is clenched or hand grips an object; aids in ulnar flexion of wrist

119
Q

Extensor digitorum Action

A

Extends wrist, metacarpophalangeal, and interphalangeal joints; tends to spread digits apart when extending metacarpophalangeal joints

120
Q

Rectus abdominis Action

A

Flexes lumbar region of vertebral column, producing forward bending at the waist

121
Q

Erector Spinae Action

A

Extension and lateral flexion of vertebral column; the longissimus capitis also produces ipsilateral rotation of the head.

122
Q

Semispinalis thoracis Action

A

Extension and contralateral rotation of vertebral column

123
Q

Multifidus Action

A

Stabilization of adjacent vertebrae, maintenance of posture, control of vertebral movement when erector spinae acts on vertebral column

124
Q

Quadratus lumborum Action

A

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
Q

External oblique Action

A

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
Q

Internal oblique Action

A

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
Q

Transverse abdominis Action

A

Compresses abdominal contents, with same effects as external oblique, but does not contribute to movements of vertebral column

128
Q

External intercostals Action

A

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
Q

Internal intercostals Action

A

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

Biology (6 decks)

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