Gross 2 Thorax

Question 0

insertion of the serratus anterior

Answer 0

vertebral border of the scapula, from the superior to the inferior angle

Question 1

origin of serratus anterior

Answer 1

ribs 1 to 8

Question 2

nerve of serratus anterior

Answer 2

Long thoracic nerve (C5,C6,C7)

Question 3

functionof serratus anterior

Answer 3

1) rotates the scapula to elevate the arm above the horizontal plane
2) raises the ribs when the scapula is fixed
3) on deep inspiration, holds scapula against thoracic wall

Question 4

origin of external intercostal muscle

Answer 4

lower border of ribs 1 to 11

Question 5

insertion of external intercostal muscle

Answer 5

upper border of ribs 2 to 12

Question 6

nerve of external intercostal muscle

Answer 6

corresponding intercostal nerve

Question 7

function the external intercostal muscle

Answer 7

elevates the ribs in inspiration

Question 8

origin of the internal intercostal muscle

Answer 8

the upper border of ribs 2 to 12

Question 9

insertion of internal intercostal muscle

Answer 9

the lower border of ribs 1 to 11

Question 10

nerve of the internal intercostal muscle

Answer 10

corresponding intercostal nerve

Question 11

function of internal intercostal muscle

Answer 11

depresses the ribs in forced expiration

Question 12

origin of the innermost intercostal muscle

Answer 12

the upper border of ribs 2 to 12

Question 13

insertion of innermost intercostal muscle

Answer 13

lower border of ribs 1 to 11

Question 14

nerve of innermost intercostal muscle

Answer 14

corresponding intercostal nerve

Question 15

function of innermost intercostal muscle

Answer 15

depresses the ribs in forced expiration

Question 16

origin of subcostalis muscle

Answer 16

inner surface of ribs near their angles

Question 17

insertion of the Subcostalis Muscle

Answer 17

the muscle crosses a rib without inserting and then inserts into the rib above that

Question 18

nerve of the subcostalis muscle

Answer 18

intercostal nerve

Question 19

function of the subcostalis

Answer 19

depresses the ribs in forced expiration

Question 20

origin of the transversus thoracis muscle

Answer 20

posterior surface of the lower sternum and xiphoid process

Question 21

insertion of the transversus thoracis muscle

Answer 21

inner surface of costal cartilages 2 to 6

Question 22

function of the transversus thoracis muscle

Answer 22

depresses the ribs in forced expiration