Cardiovascular

Question 1

What is the blood flow process through the heart?

Answer 1

Deoxygenated blood enters on the RHS through the SVC and IVC into the R atria. The tricuspid valve opens for it to empty into the R ventricle. Pulmonary valve opens for it to leave through pulmonary arteries to the lungs.
Oxygenated blood returns on the LHS through pulmonary vein into the L atrium, through bicuspid valve into L ventricle and then pumped through aortic valve out to the body.

Question 2

What separates the ventricles?

Answer 2

Interventricular septum

Question 3

The arteries are stronger and more elastic than the veins. What is their structure?

Answer 3

Tunica externa (collagen)
Tunica media (ext. layer elastic lamina)
Thick smooth muscle 
Tunica intima (int. layer elastic lamina)
Basement membrane 
Endothelium

Question 4

Veins are less elastic with bigger lumens. What is their structure?

Answer 4

Thick tunica externa (collagen)
Smooth muscle
Tunica intima 
Basement membrane
Endothelium
Valves

Question 5

What do arteries have that veins don’t?

Answer 5

Tunica media

Question 6

What do valves have that arteries don’t?

Answer 6

Valves

Question 7

What are capillaries made of?

Answer 7

Basement membrane and endothelium