Muscles of respiration

Question 1

Origin of Scalenes?

Answer 1

Transverse processes for C2 to C7 of Cervical vertebrae

Question 2

Insertion of Scalenes?

Answer 2

1st & 2nd Rib

Question 3

Scalenes role in inspiration?

Answer 3

Contraction - elevating ribs

Question 4

Sternocleidomastoid origin?

Answer 4

Manubrium of sternum/clavicle

Question 5

Sternocleidomastoid insertion?

Answer 5

Mastoid process of temporal bones of skull

Question 6

Pectoralis Minor Origin?

Answer 6

3rd to 5th ribs

Question 7

Pectoralis Minor Insertion?

Answer 7

Coracoid process of scapula

Question 8

Role of Pectoralis Minor in inspiration?

Answer 8

Elevates 3rd to 5th rib and expands ribs

Question 9

Pectoralis Major Description?

Answer 9

Fan shaped muscles which sit on top of the Pectoralis minor

Question 10

Role internal intercostals in expiration?

Answer 10

Lowers rib cage and moves it inwards

Question 11

Origin of Internal Intercostals?

Answer 11

Superior border of ribs

Question 12

Insertion of Internal Intercostals

Answer 12

Inferior border of ribs

Question 13

Role of the Oblique’s

Answer 13

Return chest wall into place

Affects the lower 8 ribs

Question 14

Role of the Rectus Abdominus

Answer 14

Attach sternum to pelvic girdle

Question 15

Role of Quadratus Lumborum

Answer 15

Connects Pelvis to spine

Depresses the thoracic rib cage

Question 16

Origin of Quadratus Lumborum

Answer 16

Transverse processes of L1 – L4, the ilolumbar ligament, posterior third of the iliac crest

Question 17

Insertion of Quadratus Lumborum

Answer 17

Inferior border of the 12th rib