Lecture 6-blood Circuits

Question 1

Name the two circuits and stuff about them

Answer 1

Pulmonary Circuit

• medium resistance and pressure
• 9% blood volume

Systemic Circuit

• high resistance and pressure
• contains 10 systems
• has portal veins/double supply
• 84% blood volume (3/4 in veins)

Heart

• two muscle pumps
• 7% of blood volume

Question 2

Building a ventricular pump

Answer 2

Has to be able to fill and eject blood.
Has atrium and appendage/auricle for increased filling speed
Has valves
Has entry and exit on same wall

Question 3

Separated ventricles?

Answer 3

Internally is the septum, visible o the outside is the Anterior and Posterior Interventricular Sulci

Question 4

Peak pressures

Answer 4

LA-5
LV-27
RA-8
RV-120

Question 5

Atrioventricular valves?

Answer 5

Tricuspid- Right
Bicuspid/Mitral-Left

Have Chordae Tendineae and Papillary muscles

Question 6

Orientation of LV and RV

Answer 6

The LV forms a cylinder shape and the RV wraps around the right hand side

Question 7

Inlet and outlet?

Answer 7

Inlets have a larger lumen than outlets
Preak pressure is in a 5:1
Wall thickness is in a 3:1

Question 8

Outlet valves

Answer 8

Aortic and pulmonary semi lunar valves

Question 9

Semi lunar valve

Answer 9

They have 3 cusps that lack cords as the lumen is much smaller and they instead gain shape from their filled 3D shape