Anatomy Histo Prac 1: Station 1

Question 1

Which costal cartilages articulate with the sternal angle? What other significance is there of the sternal angle? Why is it a useful surface anatomy landmark? Other name for it?

Answer 1

Angle of Louiis.

2nd intercostal cartilage of 2nd rib.

The sternal angle / T4-5 plane is the border between superior and inferior mediastinum

Used to measure JVP height with patient lying at 45 degrees

Question 2

Which ribs articulate directly with the sternum?

Answer 2

1-7

Question 3

What is coronary sulcus?

Answer 3

Separates Vs from As. AKA atrioventricular groove

Question 4

What blood vessels run through the Invertentricular groove, and which blood vessels run through coronary sulcus?

Answer 4

IV groove:

Anteriorly, the LAD and it’s branches from it, and the Great Cardiac Vein

Posteriorly: Middle cardiac vein, and Posterior descending artery

Coronary Sulcus:

Anteriorly, the great cardiac vein and L circumflex artery,

Posteriorly: coronary sinus (from Great cardiac vein), circumflex sort of terminating (or continuing around to form PDA in in 15% of cases)

To the R: RAD artery, which normally continues posteriorly to form the PDA. Small cardiac vein

To the L: Circumflex continues, great cardiac vein continues

Question 5

Which heart chambers at at the diaphragmatic surface?

Answer 5

LV and RV

Question 6

Apex of heart: What structure(s), and location?

Answer 6

LV at 5th intercostal space, mid-clavucular line?

Question 7

Base of heart: Structures?

Answer 7

LA and RA

Question 8

Sternocoastal surface of heart??

Answer 8

RV, some of LV and RA

Question 9

Right pulmonary surface of heart?

Answer 9

RA

Question 10

Left pulmonary surface of heart?

Answer 10

LV and LA

Question 11

Anteriorly, describe the surface anatomy of the heart

Answer 11

From lower border of Left 2nd costal cartilage 2.5 com to the left of sternal line

To the apex at the mid-clavincular line in 5th IC space

To 7th Right Sternocostal articulation

To Upper border of 3rd Right Costal cartilage 1 cm from sternum

Question 12

Name the surface anatomy of auscultatory points for each valve?

Answer 12

MV = Left 5th IC space, mid-clavicular line

TV = Left 4th IC space, just to the left of sternum

PV = Left 2nd IC space 1-2 cm from sternum

AV = Right 2nd IC space, 1-2 cm from sternum