Anterior Muscles

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created 7 years ago by chaosisbeauty
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Names and actions of anterior muscles for Nick Sagan's A&P I class @ Kirkwood Community College.
updated 7 years ago by chaosisbeauty
Grade levels:
College: First year, College: Second year
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1
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Sternocleidomastoid
(neck)

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Action:

Turns chin to opposite side,
elevates/expands thorax during forced inhalation

2
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Scalenes - Anterior, Middle
(neck)

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Action:
Elevation of ribs during forced inhalation
Bending of neck towards side contracting

3
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Sternohyoid
(neck)
two muscles surrounds adam's apple

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Action:
Depresses hyoid bone - Talking

4
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Pectoralis Major

Action:
Flexion and ADDuction

5
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Pectoralis Minor

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Action:
Draws scapula anteriorly and medially(as in pointing the shoulder forward)
HULK!

6
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External Intercostals (between ribs)

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Action:
Elevates and expands rib cage during inhalation

7
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External Oblique

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Action:
Compression of abdomen
(forced exhalation)
rotation and lateral flexion of trunk

8
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Internal Oblique

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Action:
Compression of abdomen
(forced exhalation)
rotation and lateral flexion of trunk

9
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Rectus Abdominis

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Action:
Compression of abdomen and flexion of "trunk"

10
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Biceps Brachii

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Action:
Flexion and Supination of arm
(reach and eat apple)

11
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Brachialis

Action:
Flexion of forearm

12
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Coracobrachialis

Action:
Flexion and ADDution of arm

13
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Brachioradialis

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Action:
Flexion of forearm
(gun)

14
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Flexor Carpi Radialis

Action:
Flexion and ABduction of hand at wrist

15
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Flexor Digitorum

Action:
Flexion of phalanges, digits 2-5

16
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Flexor Carpi Ulnaris

Action:
Flexion and ADDuction of hand at wrist

17
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Extensor Digitorum

Action:
Extension of phalanges 2-5

18
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Extensor Carpi Radialis

Action:
Extension and ABduction of the wrist

19
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Extensor Carpi Ulnaris

Action:
Extension and ADDuction of hand at wrist

20
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Sartorius
(longest muscle)

Action:
Flexion of thigh and extension of leg

21
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Rectus Femoris
straight down femur
(Quads)

Action:
Flexion of thigh and extension of leg

22
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Vastus Lateralis
big
(Quads)

Action:
Extension of leg

23
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Vastus Medialis
(Quads)

Action:
Extension of leg

24
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Vastus Intermedius
(Quads)

Action:
Extension of leg

25
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Gracilis
(groin, two muscles)

Action:
ADDuction of thigh and flexion of leg

26
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Adductor Longus
flat

Action:
ADDuction of Thigh

27
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Tibialis Anterior
(brown)

Action:
Dorsiflexion and inversion of foot
Toes up and bottom of foot in