Neck, Spine & Abs

Question 1

Sternocleidomastoid

Answer 1

Origin: Sternum and Clavicle

Insertion: Mastoid Process

Function: Flexes head, lateral flexion of the head, rotates head

Question 2

Scalenus anterior and medius

Answer 2

Origin: Cervical vertebrae

Insertion: First rib

Function: Elevate rib, lateral flexion and rotation of the head.

Question 3

Spinalis

Answer 3

Part of Erector Spinae Group

Origin: Cervical and Thoracic vertebrae

Insertion: Cervical and Thoracic vertebrae above

Function: Extend and laterally flex spine

Question 4

Longissimus

Answer 4

Part of Erector Spinae Gorup

Origin: Cervical, Thoracic & Lumbar vertebrae

Insertion: Mastoid process, cervical & thoracic vertebrae

Function: Extend and laterally flex spine and head.

Question 5

Iliocostalis

Answer 5

Part of Erector Spinae Gorup

Origin: Sacrum, lumbar vertebrae and ribs

Insertion: Ribs and cervical vertebrae

Function: Extend and laterally flex spine

Question 6

Intercostals

Answer 6

Origin: Inferior aspect of ribs

Insertion: Superior aspect of ribs

Function: Elevate and depress ribs to breathe

Question 7

Diaphragm

Answer 7

Origin: Sternum, ribs & lumbar vertebrae

Insertion: Central tendon

Function: Increases thoracic cavity volume drawing in air while breathing.

Question 8

Rectus Abdominis

Answer 8

Origin: Pubic crest and symphysis pubis

Insertion: Xiphoid process and inferior ribs

Function: Flexes trunk and aids in expiration, defecation and child birth

Question 9

External Oblique

Answer 9

Origin: Lower 8 ribs

Insertion: Iliac crest and pubis

Function: Flexes, laterally flexes and rotates trunk. Aids in forced expiration.