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ITEC Sport Massage - Back Muscles
Origing, Insertion and action of the back muscles for ITEC Sport Massage course
23
Anatomy
Professional
12/29/2012

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Term
Sternocleidomastoid
Definition
O - Sternum & Clavicle
I - Mastoid Process
A - Flex neck laterally and rotate (1 side)
Side flexion (Both sides)
Term
Scalenus
Definition
O - Transverse processes of 2nd - 6th cervical vertebrae
I - Upper surfaces of 1st and 2nd ribs
A - Raise first 2 ribs, flexion and rotation of neck
Term
Splenius Capitis
Definition
O - First 6 thoracic vertebrae
I - Mastoid process and occipital bone
A - Extends neck, slight rotation
Term
Levator Scapulae
Definition
O - Upper 4 cervical vertebrae
I - Superior medial border of scapula
A - Elevate shoulder, rotate scapula
Term
Supraspinatus
Definition
O - Supraspinous fossa of scapula
I - Greater tuberosity of humerus
A - Abducts arm
Term
Infraspinatus
Definition
O - Inferior spinous fossa of scapula
I - Greater tuberosity of humerus
A - Rotates arm laterally
Term
Subscapularis
Definition
O - Subscapular fossa of scapula
I - Lesser tuberosity of humerus
A - Rotates arm inwards
Term
Teres Minor
Definition
O - Axillary border of scapula
I - Greater tuberosity of humerus
A - Rotates arm laterally
Term
Teres Major
Definition
O - Inferior angle of scapula
I - Medial lip of bicipital groove of humerus
A - Draws arm backwards, adducts and medially rotates it
Term
Rhomboids
Definition
O - 7th cervical and 1-5 thoracic vertebrae
I - Medial border of scapula
A - Adduction and rotation of scapula
Term
Trapezius
Definition
O - Occipital bone, cervical and thoracic vertebrae
I - Clavicle and spine of scapula, acromion process
A - Elevate and brace shoulder, rotate scapula
Term
Latissimus Dorsi
Definition
O - Lower 6 thoracic and lumbar vertebrae, sacrum and iliac crest
I - Bicipital groove of humerus
A - Draws arm backwards, adducts and rotates inwards
Term
Erector Spinae
Definition
O - Sacrum and iliac crest, ribs and lower vertebrae
I - Ribs, vertebrae and mastoid process
A - Flex trunk laterally (1 part)
Extend trunk (Both parts)
Term
Quadratus Lumborum
Definition
O - Iliac Crest
I - 12th rib and transverse processes of upper 4 lumbar vertebrae
A - Flex trunk laterally and rotates it (1 side)
Extend trunk (Both sides)
Term
Pectoralis Major
Definition
O - Clavicle, sternum, upper 6 costal cartilages
I - Lateral lip of bicipital groove of humerus
A - Flexes arm, adducts and rotates it inward
Term
Pectoralis Minor
Definition
O - 3rd to 5th ribs
I - Coracoid process of scapula
A - Draws shoulder forwards and down
Term
Serratus Anterior
Definition
O - Upper 9 ribs
I - Anterior surface of vertebral border of scapula
A - Draw shoulder forward and rotate scapula
Term
Rectus Abdominus
Definition
O - Pubis
I - Ribs and sternum
A - Flexes trunk
Term
Abdominus Transversalis
Definition
O - Inguinal ligament, iliac crest, lumbar fascia, cartilages of lower 6 ribs
I - Conjoint tendon and linea alba through abdominal aponeurosis, pubis
A - Support viscera, compress abdomen
Term
Internal Obliques
Definition
O - Inguinal ligament, iliac crest and lumbar fascia
I - Costal cartilages of ribs 9-12 and linea alba
A - Lumbar flexion, side flexion and rotation
Term
External Obliques
Definition
O - Lower 8 ribs
I - Iliac crest and linea alba through abdominal aponeurosis
A - Lumbar flexion, side flexion and rotation
Term
Internal Intercostals
Definition
O - Lower borders of upper eleven pairs of ribs
I - From cartilages to the angles of upper 11 ribs
A - Draw ventral part of ribs downwards
Term
External Intercostals
Definition
O - Lower margin of upper 11 ribs
I - Superior border of rib below
A - Draw ventral part of rib upward
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