Intercostals and Diaphragm

Question 1

External Intercostalis: O

Answer 1

Inferior border of Ribs

Question 2

External Intercostalis: I

Answer 2

Superior border of Ribs below

Question 3

External Intercostalis: N

Answer 3

Intercostal Nerves

Question 4

External Intercostalis: A

Answer 4

Elevates Ribs during forced inspiration

Question 5

Internal Infercostalis: O

Answer 5

Inferior border of Ribs

Question 6

Internal Infercostalis: I

Answer 6

Superior border of Ribs below

Question 7

Internal Infercostalis: N

Answer 7

Intercostal Nerves

Question 8

Internal Infercostalis: A

Answer 8

Depresses Ribs during forced expiration

Question 9

Intercostalis: O

Answer 9

Inferior border of Ribs

Question 10

Intercostalis: I

Answer 10

Superior border of Ribs below

Question 11

Intercostalis: N

Answer 11

Intercostal Nerves

Question 12

Intercostalis: A

Answer 12

Depresses Ribs during forced expiration
Elevates Ribs (a little bit because of interchondral part)

Question 13

Subcostals: O

Answer 13

Inferior surface of lower Ribs

Question 14

Subcostals: I

Answer 14

Superior border of 2 or 3 Ribs below

Question 15

Subcostals: N

Answer 15

Intercostal Nerves

Question 16

Subcostals: A

Answer 16

Depresses Ribs

Question 17

Transversus Thoracis: O

Answer 17

Posterior surface of lower Sternum

Question 18

Transversus Thoracis: I

Answer 18

Internal surface of Costal Cartilages 2-6

Question 19

Transversus Thoracis : N

Answer 19

Intercostal Nerves

Question 20

Transversus Thoracis: A

Answer 20

Weakly Depresses Ribs

Question 21

Diaphragm: O

Answer 21

first three lumbar vertebrae, lower six costal cartilages, and inner surface of xiphoid process of sternum

Question 22

Diaphragm: I

Answer 22

muscle fibers converge upward and inward to form the central tendon

Question 23

Diaphragm: N

Answer 23

Phrenic Nerve C3-5

Question 24

Diaphragm: A

Answer 24

flattens on contraction increasing the vertical dimensions of thorax – Primary muscle of Respiration