The Cardiovascular System (Overview)

Question 1

What is Hemodynamics?

Answer 1

The flow of the blood throughout the body

Question 2

The amount of Calcium in the body + Amount of Myosin Filaments in the heart both effect what?

Answer 2

The Heart’s Contractility

Question 3

What things make up your Renin-Angiotensin Aldosterone System (RAAS)?

Answer 3

Several organs that regulate BP (Liver, Kidneys, Lungs, Adrenal Glands)

Question 4

When is the RAAS activated?

Answer 4

When the kidneys detect a decreased blood flow to themselves.

When the kidneys detect a Low Serum Sodium Level in the blood.

Question 5

When the Kidneys detect a decrease in sodium or blood flow, what enzyme do they release?

Answer 5

Renin

Question 6

What occurs after the kidneys release Renin?

Answer 6

The Renin starts a complex set of events that lead to the release of Angiotensin II into the circulation

Question 7

What does Angiotensin II do?

Answer 7

It’s a powerful Vasoconstrictor that stimulates the Kidneys to decrease Sodium + Water excretion

Stimulates the release of Aldosterone

Question 8

What releases Aldosterone?

Answer 8

The Adrenal Gland

Question 9

What does Aldosterone do?

Answer 9

Increases Sodium Reabsorption from the Renal Tubes

Question 10

Where does fat develop in the Arteries during Atherosclerosis?

Answer 10

In the walls of the Arteries (The Intima)