Muscles For Respiration

Question 1

Diaphragm (origin)

Answer 1

Xiphoid process
Lower 6 costal cartilages
L1-L3 vertebrae

Question 2

Diaphragm (insertion)

Answer 2

Central tendon (tip of dome)

Question 3

Diaphragm (action)

Answer 3

Draws central tendon down and forward during inspiration

Question 4

Diaphragm (nerve)

Answer 4

Phrenic nerve

Question 5

Diaphragm (blood)

Answer 5

Pericardiacophrenic
Musculophrenic
Superior and inferior phrenic arteries

Question 6

Internal intercostals (origin)

Answer 6

Lower border of rib (11 pairs)

Question 7

Internal intercostals (insertion)

Answer 7

Upper border of rib below origin

Question 8

Internal intercostals (action)

Answer 8

Breathing out

Question 9

Internal intercostals (nerve)

Answer 9

Intercostal nerves

Question 10

Internal intercostals (blood)

Answer 10

Posterior and anterior intercostal arteries

Question 11

External intercostals (origin)

Answer 11

Lower border of rib (11 pairs)

Question 12

External intercostals (insertion)

Answer 12

Upper border of rib below origin

Question 13

External intercostals (action)

Answer 13

Lift the ribs up when you breathe in

Question 14

External intercostals (blood)

Answer 14

Posterior and anterior intercostal arteries

Question 15

Serratus posterior superior (origin)

Answer 15

Ligamentum nuchae
Spinous processes of C7-T3

Question 16

Serratus posterior superior (insertion)

Answer 16

Superior aspect of ribs 2-4

Question 17

Serratus posterior superior (action)

Answer 17

Elevation of ribs

Question 18

Serratus posterior superior (nerve)

Answer 18

Ventral rami of upper thoracic nerves

Question 19

Serratus posterior superior (blood)

Answer 19

Posterior intercostal arteries

Question 20

Serratus posterior inferior (origin)

Answer 20

Spinous processes of T11-L2

Question 21

Serratus posterior inferior (insertion)

Answer 21

Inferior aspect of ribs 9-12

Question 22

Serratus posterior inferior (action)

Answer 22

Depresses ribs

Question 23

Serratus posterior inferior (nerve)

Answer 23

Ventral rami of lower thoracic nerves

Question 24

Serratus posterior inferior (blood)

Answer 24

Posterior intercostal arteries

Question 25

Levatores costarum (origin)

Answer 25

Transverse processes C7-T11

Question 26

Levatores costarum (insertion)

Answer 26

Corresponding rib at superior border
Between costal angle and tubercle

Question 27

Levatores costarum (action)

Answer 27

Assists with deep inspiration

Question 28

Levatores costarum (nerve)

Answer 28

Dorsal rami

Question 29

Levatores costarum (blood)

Answer 29

Posterior intercostal arteries

Question 30

Pectoralis minor (origin)

Answer 30

Ribs 3-5

Question 31

Pectoralis minor (insertion)

Answer 31

Corocoid process of scapula

Question 32

Pectoralis minor (action)

Answer 32

Depression of shoulders
Downward rotation of scapula

Question 33

Pectoralis minor (nerve)

Answer 33

Medial pectoral nerve

Question 34

Pectoralis minor (nerve)

Answer 34

Medial pectoral nerve

Question 35

Pectoralis minor (blood)

Answer 35

Pectoral branch of thoracoacromial and intercostal lateral thoracic arteries