Torso Muscles

By: DaYea, Christina

External Oblique, Internal Oblique, Transversus Abdominis, Rectus Abdominis, Pectoralis Major, Pectoralis Minor, Serratus Anterior

Torso Muscles

http://www.sportsinjuryclinic.net/cybertherapist/muscles/allmuscles.php

Abdominal Oblique

Origin Insertion Action

External Oblique

Lowest 8 ribs

Front half of the iliac crest and linea alba

Compresses the

abdomen and supports

the abdominal

viscera

Internal Oblique

Iliac crest,

inguinal ligament

Lower 3~4 ribs and linea

alba

Compresses the

abdomen and supports

the abdominal

viscera

External Oblique Internal Oblique

Abdominis

Origin Insertion Action

Transversus

Abdominis

Front of the iliac crest, inguinal

ligament, lower 6 ribs

Linea albaCompresses the abdomen and supports the abdominal

viseraRectus

AbdominisCrest of the pubis, Pubic Symphesis

Xiphoid process, 5th, 6th and 7th Costal

cartilages

Flexes the lumbar spineTransversus

Abdominis

Rectus Abdominis

PectoralisOrigin Insertion Action

Pectoralis Major

Half of the clavicle, Sternum, Costal

cartilages (first 6 ribs)

Intertubercular groove of the

humerus

Shoulder flexion, internal rotation,

adduction

Pectoralis Minor

Outer surface of ribs 3~5

Coracoid process of the scapula

Scapula protraction, rotation of the

scapula downwards

Pectoralis Major Pectoralis Minor

Serratus AnteriorOrigin Insertion Action

Serratus Anterior

Upper nine ribs at the side of the

chest

Costal aspect of the medial border of the

scapula

Scapula protraction,

rotation of the scapula

upwards

Serratus Anterior

http://upload.wikimedia.org/wikipedia/commons/3/32/Illu_trunk_muscles.jpg

D

A

B

C

BA

D

E

B

C

A