Muscles Of The Thoracic Wall

Question 0

External intercostal i.a.

Answer 0

Superior border of ribs below

Question 1

External intercostal s.a.

Answer 1

Inferior border of ribs

Question 2

External intercostal innervation

Answer 2

Intercostal nerve

Question 3

External intercostal action

Answer 3

During forced inspiration

Elevates ribs

Question 4

Internal intercostal s.a.

Answer 4

Inferior border of ribs

Question 5

Internal intercostal I.a.

Answer 5

Superior border of ribs

Question 6

Internal intercostal innervation

Answer 6

Intercostal nerve

Question 7

Internal intercostal action

Answer 7

During forced inspiration : interosseous part depresses ribs; interchondral part elevates ribs

Question 8

Innermost intercostal s.a.

Answer 8

Inferior border of ribs

Question 9

Innermost intercostal I.a.

Answer 9

Superior border of ribs below

Question 10

Innermost intercostal innervation

Answer 10

Intercostal nerve

Question 11

Innermost intercostal action

Answer 11

During forced inspiration : interosseous part depresses ribs; interchondral part elevates ribs

Question 12

Transversus thoracis s.a.

Answer 12

Posterior surface of lower sternum

Question 13

Transversus thoracis I.a.

Answer 13

Internal surface of costal cartilages 2-6

Question 14

Transversus thoracis innervation

Answer 14

Intercostal nerves

Question 15

Transversus thoracis action

Answer 15

Weakly depresses ribs

Question 16

Subcostal s.a.

Answer 16

Internal surface of lower ribs near their angles

Question 17

Subcostal I.a.

Answer 17

Superior borders of 2nd or 3rd ribs below

Question 18

Subcostal innervation

Answer 18

Intercostal nerves

Question 19

Subcostal action

Answer 19

Probably act in same manner as internal intercostal muscles

Question 20

Levatores costarum s.a.

Answer 20

Transverse processes of t7-t11

Question 21

Levatores costarum I.a.

Answer 21

Subadjacent ribs between tubercle and angle

Question 22

Levatores costarum innervation

Answer 22

Posterior rami of c8-t11 nerves

Question 23

Levatores costarum action

Answer 23

Elevate ribs

Question 24

Serratus posterior superior s.a.

Answer 24

Nuchal ligament, spinous processes of c7-t3 vertebrae

Question 25

Serratus posterior superior I.a.

Answer 25

Superior borders of 2nd - 4th ribs

Question 26

Serratus posterior superior innrvation

Answer 26

2nd -5th intercostal nerves

Question 27

Serratus posterior superior action

Answer 27

Elevates ribs

Question 28

Serratus posterior inferior s.a

Answer 28

Spinous processes of t11-l2 vertebrae

Question 29

Serratus posterior inferior I.a.

Answer 29

Inferior borders of 8th-12th ribs near their angles

Question 30

Serratus posterior inferior innervation

Answer 30

9th-11th intercostal nerves, subcostal t12 nerve

Question 31

Serratus posterior inferior action

Answer 31

Depresses ribs