OAINs of Select Muscles

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Biceps Brachii Origins

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45 Terms

1

Biceps Brachii Origins

Short Head: Coracoid process of scapula

Long Head: supraglenoid tubercle of scapula

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Biceps Brachii Insertions

Radial tuberosity and bicipital aponeurosis

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3

Biceps Brachii Actions

flexes shoulder and elbow and supinates the forearm

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4

Biceps brachii inneravtion

musculocutaneous nerve

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5

Deltoid origins

lateral 1/3 of the clavicle, acromion, and spine of the scapula

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6

Deltoid Insertions

deltoid tuberosity of the humerus

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7

Deltoid Actions

Anterior Fibers: flex and medially rotate the shoulder

Posterior Fibers: extend and laterally rotate the shoulder

All Fibers contracting: abducts shoulder

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8

Deltoid innervation

axillary nerve

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9

diaphragm origins

xiphoid process, costal margin and vertebral bodies L1-3

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10

diaphragm insertions

central tendon of the diaphragm

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11

Diaphragm actions

presses the abdominal viscera inferiorly, increasing the volume of the thoracic cavity

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12

Diaphragm innervations

Phrenic nerve

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13

Gastrocnemius origins

Lateral head: lateral condyle of the femur

Medial Head: medial condyle of the femur

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14

Gastrocnemius insertions

calcaneus

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15

Gastrocnemius actions

knee flexion and plantar flexion in the ankle

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16

Gastrocnemius innervation

tibial nerve

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17

occipitofrontalis origins

occipitalis: superior nuchal line

frontalis: epicranial aponeurosis

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18

occipitofrontalis insertions

occipitalis: epicranial aponeurosis

frontalis: SQ tissue of eyebrows

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occipitofrontalis actions

wrinkles forehead and elevates eyebrows

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occipitofrontalis innervation

facial nerve

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21

rectus abdominis origins

pubic bone and pubic symphysis

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22

rectus abdominis insertions

xyphoid process and costal cartilages of 5-7

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23

rectus abdominis actions

flexes the trunk

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24

rectus abdominis innervation

intercostals nerve

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25

rhomboid major origins

spinous processes of T2-T5

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26

rhomboid major insertions

medial border of the scapula

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27

rhomboid major actions

retracts the scapula

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28

rhomboid major innervation

dorsal scapular nerve

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29

sartorius origins

ASIS

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30

sartorius insertions

medial surface of the proximal tibia

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sartorius actions

flexes, abducts and laterally rotates the hip and flexes knee

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sartorius innervation

femoral nerve

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33

serrated anterior origins

surface of the 1st to 8th ribs at the side of the chest

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34

serratus anterior insertions

anterior aspect of the entire medial border of the scapula

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35

serratus anterior actions

protracts the scapula

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serratus anterior innervation

long thoracic nerve

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37

sternocleidomastoid origin

sternal head: anterior surface of manubrium

clavicular head: medial 1/3 of clavicle

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sternocleidomastoid insertions

mastoid process of temporal bone

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sternocleidomastoid actions

unilateral contraction: draws the mastoid process down toward the same side

bilateral contraction: flexes the neck

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40

sternocleidomastoid innervation

spinal accessory nerve

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41

triceps brachii origins

long head: infraglenoid tubercle of scapula

lateral and medial heads: posterior shaft of humerus

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42

triceps brachii insertions

olecranon process of the ulna

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43

triceps brachii actions

extends forearm and the long head helps stabilize the humerus within the shoulder joint

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44

triceps brachii innervation

radial nerve

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45
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