Muscle Details

Question 1

Transversus thoracis

Answer 1

originates at sternum, inserts into lower ribs (#2-6)

Question 2

Rectus abdominus

Answer 2

originates at xiphoid process, inserts at pubic symphysis

Question 3

Internal intercostals

Answer 3

originate from superior margin of ribs 2-11, insert at inferior border of ribs above; innervated by intercostal nerves

Question 4

External intercostals

Answer 4

originate from lower margin of each rib, insert at upper margin of the rib below; innervated by intercostal nerves

Question 5

Serratus anterior

Answer 5

originates from ribs (#1-9), inserts at inner vertebral border of scapula

Question 6

Subclavius

Answer 6

originates from inferior surface of clavicle, inserts superior surface of rib 1

Question 7

Diaphragm

Answer 7

originates at xiphoid process/inferior rib cage, vertebral head, corpus/transverse processes of lumbar vertebrae; inserts at central tendon