Anterior Thoracic Wall

Question 1

Costal Groove (on ribs)

Answer 1

Where intercostal VANs run

Question 2

Facet articulations

Answer 2

Ribs articulate with Superior Costal Facet (on vertebrae) of the same number and the Inferior Costal Facet of the previous number

Question 3

External Intercostal Muscles

Answer 3

Angle down and in towards costal margin

Question 4

Action of external intercostal muscles

Answer 4

Elevation

Forced inspiration

Question 5

Internal Intercostal Muscles

Answer 5

Angle parallel to costal margin

Question 6

Action of internal intercostal muscles

Answer 6

Depression

Forced expiration

Question 7

Innermost intercostals

Answer 7

Basically same thing as internal intercostals
Found along the lateral aspect of the thoracic wall
VANs run between internal and innermost

Question 8

Muscles of inspiration

Answer 8

External intercostals
Interchondral part of internal intercostals
Diaphragm contracts

Question 9

Muscles of expiration

Answer 9

Internal intercostals (except interchondral part)
Abdominals and obliques

Question 10

Internal thoracic artery

Answer 10

Run along both sides of sternum

Question 11

Posterior intercostal arteries

Answer 11

Branches of the aorta

Question 12

Anterior intercostal arteries

Answer 12

Branches of the internal thoracic arteries

Question 13

Intercostal nerves

Answer 13

From primary ventral rami

Have lateral and anterior branches

Question 14

Collateral nerve and vessels

Answer 14

Branch off and run along the top of the next rib