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A&P1 Lab > muscle origin, insertion, action > Flashcards

muscle origin, insertion, action Flashcards

1
Q

orbicularis oculi action

A

closes eye, draws eyebrows inferiorly

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2
Q

orbicularis oris action

A

closes lips, purses and protrudes lips

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3
Q

zygomaticus major action

A

raises lateral corners of mouth upwards

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4
Q

buccinator action

A

compresses cheek

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5
Q

masseter action

A

elevates mandible

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6
Q

frontalis action

A

raises eyebrows, fixes aponeurosis and pulls scalp posteriorly

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7
Q

temporalis action

A

elevates and retracts mandible

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8
Q

scalenes action

A

elevate ribs 1-2

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9
Q

sternocleidomastoid action

A

flexion of neck, rotate head toward shoulder

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10
Q

external intercostals action

A

pulls ribs toward one another to elevate rib cage

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11
Q

Internal intercostals action

A

Draws ribs together to depress rib cage

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12
Q

Diaphragm

A

Prime mover of inspiration flattens on contraction

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13
Q

Pectoralis major

A

Prime mover of arm flexion; addicts, medially rotates arm

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14
Q

Serratus anterior

A

Prime mover to protract and hold scapula against chest wall; rotates scapula

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15
Q

Trapezius

A

Raises, rotates, and addicts scapula and stabilizes it

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16
Q

Rhomboid major

A

Stabilizes scapulae

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17
Q

Latissimus dorsi

A

Prime mover of arm extension

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18
Q

External oblique

A

Flexes the vertebral column, compresses abdominal wall, trunk rotation and lateral flexion

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19
Q

Internal oblique

A

Flexes the vertebral column compresses abdominal wall, trunk rotation, and lateral flexion

20
Q

Transverse abdominis

A

Compresses abdominal contents

21
Q

Rectus abdominis

A

Flexes the vertebral column

22
Q

Deltoid

A

Prime mover of arm abduction

23
Q

Biceps brachii

A

Flexion and supination of forearm

24
Q

Triceps brachii

A

Powerful forearm extensor

25
Q

Flexor carpi radialis

A

Powerful flexor and abductor of the hand

26
Q

Flexor carpi ulnaris

A

Flexes and adducts hand

27
Q

Palmaris longus

A

Tenses skin und fascia of palm

28
Q

Extensor carpi radialis

A

Extends and abducts hand

29
Q

Extensor carpi ulnaris

A

Extends and adducts hand

30
Q

Gluteus Maximus

A

Powerful thigh extension

31
Q

Tensor fascia latea

A

Flexes, abducts, and medically rotates thigh,

32
Q

Gracilis

A

Adducts thigh; flexes and medially rotates leg

33
Q

Sartorious

A

Flexes, abducts, and laterally rotates thigh; flexes leg

34
Q

Biceps femurs

A

Extends thigh; flexes leg

35
Q

Semitendinosus

A

Extends thigh; flexes leg

36
Q

Semimembranosus

A

Extends thigh; flexes leg

37
Q

Rectus femoris

A

Extends leg and flexes thigh

38
Q

Vastus lateralis

A

Extends leg and stabilizes knee

39
Q

Vastus medialis

A

Extends leg; stabilizes patella

40
Q

Vastas intermedium

A

Extends leg

41
Q

Tibialis anterior

A

Prime mover of dorsiflexion

42
Q

Extensor digitorum longus

A

Prime mover of toe extension

43
Q

Gastrocnemius

A

Plantar flexes foot

44
Q

Soleus

A

Plantar flexion

45
Q

Fibularis (peroneus) longus

A

Plantar flexes and everts foot

46
Q

extensor digitorum

A

Prime mover of finger extension

A&P1 Lab (38 decks)

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