neck, spine, abs

Question 1

sternocleidomastoid

Answer 1

(muscle of neck & vertebral column)

o: sternum & clavicle
i: mastoid process
f:
- flexes head
- flexes side to side, & rotates it

Question 2

scanlenus anterior & medius

Answer 2

(muscle of neck & vertebral column)

o: cervical vertebrae
i: first rib
f:
- elevate rib (helps in forced breathing)
- lateral flexion & neck rotation

Question 3

spinalis

Answer 3

(erector spinae group)

o: cervical & thoracic vertebrae
i: cervical & thoracic vertebrae above
f: extends & laterally flexes spine

Question 4

longissimus

Answer 4

o: cervical, thoracic & lumbar vertebrae
i: mastoid process, cervical, & thoracic vertebrae
f: extends & laterally flexes spine AND head

Question 5

iliocostalis

Answer 5

(erector spinae group)

o: sacrum, lumbar, vertebrae & ribs
i: ribs & cervical vertebrae
f: extends & laterally flexes spine

Question 6

intercostals

Answer 6

o: inferior aspect of ribs
i: superior aspect of ribs
f: elevates & depresses ribs to breathe

Question 7

diaphragm

Answer 7

o: sternum, ribs, lumbar vertebrae
i: central tendon
f: increases thoracic volume drawing while breathing

Question 8

rectus abdominis

Answer 8

o: pubic crest & symphysis pubis
i: xiphoid process & inferior ribs
f:
- flexes trunk
- helps in expiration, defecation, child birth

Question 9

external oblique

Answer 9

o: lower 8 ribs
i: iliac crest & pubis
f: flexes, laterally flexes and rotates trunk (helps in forced expiration)