13 Selected Muscles Flashcards

1
Q

Triceps Brachii

A

Long head-Inferior margins of glenoid cavity
Medial head-Distal radial groove on posterior of humerus
Lateral head-Posterior of humerus
Instertion-Olecranon of Ulna
Action-POWERFUL Extensor of forearm

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2
Q

Biceps Brachii

A

Long head-Coracoid process
Short head-Supraglrnoid tubercle+lip of glenoid cavity
Insertion-Radial tuberosity
Action-POWERFUL flexor of forearm

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3
Q

Flexor carpi Ulnaris

A

Medial epicondyle of humerus, olecranon, and posterior surface of ulna
Insertion-Base of metacarpal 5, pisiform +hamate bones
Action-Flexes and adducts arm

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4
Q

Extensor carpi radialis brevis

A

Lateral epicondyle of humerus
Insertion-Base of metacarpal 3
Action-Extends and abducts arm

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5
Q

Gastrocnemius

A

Medial and lateral condyles of femur
Insertion-Calcaneal tendon inserts into calcaneus
Action-Plantarflexes foot

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6
Q

Sartorius

A

Anterior Superior Iliac spine
Inserts-By apneurosis into the medial aspect of the proximal tibia
Action-(ALL) Flexes thigh and leg, BUT abducts and laterally rotates thigh

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7
Q

Rectus femoris

A

Anterior inferior iliac spine
Inserts-Tibial tuberosity and patella
Action-Extends leg and flexes thigh

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8
Q

Vastus lateralis

A

(FUSSY)-gREATER trochanter, intertrochanteric line, linea aspera
-Inserts-Tibial tuberosity and patella
Extends leg+stabilizes knee

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9
Q

Biceps femoris (ISCHIAL)

A

LOng head-Ischial tuberosity
Short head-Linea aspera and distal femur
Inserts-
Action-Flexes leg and extends thigh

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10
Q

Sternocleidomastoid

A

Manubrium of sternum, and lateral portion of clavicle
Inserts-Mastoid process of temporal bone and inferior nuchal lines of occipital bone
Flexes neck, and allows rotation of head towards each shoulder laterally

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11
Q

Deltoid

A

Lateral 1/3 of the clavicle, Acromion, and Spine of scapula
Inserts-Deltoid tuberosity
Action-Prime mover in arm abduction

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12
Q

Supraspinatus

A

Supraspinous fossa
Inserts-Greater tubercle of humerus
Action-Inintiates arm abduction

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13
Q

Rectus abdominis

A

Iliac crest, iliac symphysis
Inserts-Xiphoid process and costal cartilage of ribs 5-7
Action-Flexes and laterally rotates vertebral column

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