Muscles Flashcards

1
Q

Sternocleidomastoid origin

A

Sternum and clavicle

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2
Q

Sternocleidomastoid insertion

A

Skull behind ear (Mastoid process)

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3
Q

Sternocleidomastoid use

A

Elevates sternum and clavicle and ribs

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4
Q

Scalenus Anterior origin

A

3rd through 6th cervical vertebrae

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5
Q

Scalenus Anterior insertion

A

Inner border of top of first rib

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6
Q

Scalenus Anterior use

A

Elevates 1st rib

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7
Q

Scalenus Medius origin

A

2nd through 7th cervical vertebrae

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8
Q

Scalenus Medius insertion

A

1st rib

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9
Q

Scalenus Medius use

A

Elevates first rib

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10
Q

Scalenus Posterior origin

A

5th through 7th cervical vertebrae

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11
Q

Scalenus Posterior insertion

A

Outer surface of 2nd rib

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12
Q

Scalenus Posterior use

A

Elevates 2nd rib

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13
Q

Pectoralis Major origin

A

Front surface of upper costal cartilages, sternum, and inner half of clavicle

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14
Q

Pectoralis Major insertion

A

Humerus

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15
Q

Pectoralis Major use

A

Elevates the sternum and ribs

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16
Q

Pectoralis Minor origin

A

2nd through 5th ribs near their cartilages

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17
Q

Pectoralis Minor insertion

A

Front surface of the scapula

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18
Q

Pectoralis Minor use

A

Elevates 2nd through 5th ribs

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19
Q

Subclavius origin

A

Undersurface of the clavicle

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20
Q

Subclavius insertion

A

1st rib near its cartilage

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21
Q

Subclavius use

A

Elevates 1st rib

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22
Q

Serratus Anterior origin

A

Outer surfaces of upper 8 or 9 ribs

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23
Q

Serratus Anterior insertion

A

Front of the scapula

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24
Q

Serratus Anterior use

A

Elevates upper ribs

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25
External Intercostals description
11 connected muscles that fill the outer portions of the rib interspaces. Form a sheet of muscle
26
External Intercostals origin
1st rib, cervical vertebrae, and base of skull
27
External Intercostals insertion
Links each rib to the adjacent rib
28
External Intercostals use
Elevate ribs and stiffens interspaces
29
Internal Intercostals description
11 connected muscles that fill the inner portions of the rib interspaces (except at the back of the rib cage)
30
Internal Intercostals use
Primarily depress ribs and stiffen their interspaces BUT intercartilaginous internal intercostal muscles elevate the ribs
31
Transversus Thoracis origin
Inner surface of the lower sternum and 4th or 5th costal cartilages
32
Transversus Thoracis insertion
2nd through 6th ribs
33
Transversus Thoracis use
Depresses 2nd through 6th ribs
34
Latissimus Dorsi origin
Thoracic vertebrae (lower 6), lumbar vertebrae, and sacral vertebrae, and back surfaces of lower 3 to 4 ribs
35
Latissimus Dorsi insertion
Humerus
36
Latissimus Dorsi use
Whole muscles depresses rib cage wall; however, fibers that insert into lower ribs can elevate them
37
Serratus Posterior Superior origin
Cervical (C7) and thoracic (T1 to T3 or T4) vertebrae
38
Serratus Posterior Superior insertion
Ribs 2 through 5
39
Serratus Posterior Superior use
Elevates ribs 2 through 5
40
Serratus Posterior Inferior origin
Lower thoracic and upper lumbar vertebrae
41
Serratus Posterior Inferior insertion
Lower border of lower 4 ribs
42
Serratus Posterior Inferior use
Depresses lower 4 ribs
43
Lateral iliocostali Cervicis origin
Surfaces of 3rd through 6th ribs
44
Lateral iliocostalis Cervicis insertion
4th through 6th cervical vertebrae
45
Lateral iliocostalis Cervicis use
Elevates 3rd through 6th ribs
46
Lateral iliocostalis Lumborum origin
Lumbodorsal fascia, lumbar vertebrae, and back surface of coxal bone
47
Lateral iliocostalis Lumborum insertion
Lower edges of lower 6 ribs
48
Lateral iliocostalis Lumborum use
Depresses lower 6 ribs
49
Lateral iliocostalis thoracis origin
Upper edges of lower 6 ribs
50
Lateral iliocostais Thoracis insertion
Lower edges of upper 6 ribs
51
Lateral iliocostalis Thoracis use
Stabilizes the back of the rib cage wall and moves in concert with the cervicis and/or lumborum parts of the muscle group
52
Levatores Costarum origin
12 small muscles that originate from 7th cervical vertebrae through 11th thoracic vertebrae
53
Levatores Costarum insertion
Back surface of the rib below the vertebra of origin
54
Levatores Costarum use
Elevate the ribs
55
Quadratus Lumborum origin
Top of the coxal bone
56
Quadratus Lumborum insertion
1st 4 lumbar vertebrae and lowest rib
57
Quadratus Lumborum use
Depresses the lowest rib
58
Subcostals origin
Lower portion of the vertebral column on the inner surfaces of the ribs
59
Subcostals insertion
Inner surfaces of ribs above
60
Subcostals use
Depress the ribs
61
Diaphragm origin
Bottom of the sternum and lower 6 ribs and 1st 3 or 4 lumbar vertebrae
62
Diaphragm insertion
Central tendon
63
Diaphragm use
Pulls downward on the central tendon to enlarge the thorax vertically and/or elevates the lower 6 ribs to enlarge the thorax circumferentially
64
Abdominal Wall muscles (backside)
-Latissimus dorsi -Lateral iliocostalis lumborum -Quadratus lumborum
65
Rectus Abdominus origin
Front edge of coxal bone
66
Rectus Abdominus insertion
Outer surfaces of 5th through 7th costal cartilages and lower sternum (encased in abdominal aponeurosis)
67
Rectus Abdominus use
Depresses lower ribs and sternum
68
External Oblique origin
Upper surface of the coxal bone and abdominal aponeurosis near the midline
69
External Oblique insertion
On the lower 8 ribs
70
External Oblique use
Depresses lower 8 ribs and forces front and sides of abdominal wall inward
71
Internal Oblique origin
Upper surface of the coxal bone and lumbodorsal fascia
72
Internal Oblique insertion
Abdominal aponeurosis lower borders of the costal cartilages of the lower 3 to 4 ribs
73
Internal Oblique use
Depresses lower ribs and forces front and sides of abdominal wall inward
74
Transversus abdominis origin
Upper surface of the coxal bone, lumbodorsal fascia, and inner surfaces of the costal cartilages of ribs 7 through 12
75
Transversus Abdominis insertion
Into abdominal aponeurosis
76
Transversus Abdominis use
Forces front and sides of abdominal wall inward