Ribs/Thorax

Question 1

Origin of diaphragm

Answer 1

Ribs 7-12
L2-L3
Xiphoid process

Question 2

Insertion of diaphragm

Answer 2

Central tendon

Question 3

Action of diaphragm

Answer 3

Inspiration
Expiration

Question 4

Origin of anterior scalenes

Answer 4

Transverse process of C3-C6

Question 5

insertion of anterior scalenes

Answer 5

1st rib

Question 6

origin of middle scalenes

Answer 6

transverse processes of C2-C7

Question 7

insertion of middle scalenes

Answer 7

1st rib

Question 8

origin of posterior scalenes

Answer 8

transverse processes of C6-C7

Question 9

insertion of posterior scalenes

Answer 9

2nd rib

Question 10

action of scalenes

Answer 10

lateral flexor
rotator
elevator
flexor

Question 11

origin of intercostals

Answer 11

inferior border of rib above

Question 12

insertion of intercostals

Answer 12

superior border of rib below

Question 13

action of external intercostals

Answer 13

draw ribs superiorly to increase space of thoracic cavity to help with inspiration

Question 14

action of internal intercostals

Answer 14

draw ribs inferiorly to increase space of thoracic cavity to help with exhalation