Heart

Question 1

Describe the structure of heart.

Answer 1

2 sides, 4 chambers and 4 valves.

Question 2

What are the ventricles?

Answer 2

The lower chambers of the heart.

Question 3

Which chamber pushes the blood with more force?

Answer 3

The left ventricle, as the blood then has to go to the rest of the body.

Question 4

Where does the heart get its own oxygenated blood supply from?

Answer 4

From the coronary arteries, that branch off the heart, making sure that the muscle tissue of heart gets all kind of nutrients that it needs.

Question 5

What is the tissue of heart’s wall made up of?

Answer 5

Cardiac muscle.

Question 6

Name the valves of heart and their function.

Answer 6

Aortic valve:
Regulates the blood flow from left ventricle to the aorta, meaning it prevents the backflow.
Bicuspid valve:
Regulates the blood flow from left atrium to left ventricle, preventing the backflow.
Tricuspid valve:
Regulates the blood flow from right atrium to the right ventricle, and prevents the backflow.
Mitral valve:
Regulates the blood flow from left ventricle to left atrium, preventing backflow.
Pulmonic valve:
Regulates the blood flow from right ventricle to the pulmonary artery, preventing the backflow.

Question 7

What is the systemic circuit?

Answer 7

The circuit where the oxygenated blood is taken from heart to body.

Question 8

How is the circuit from heart to lungs called?

Answer 8

Pulmonary circuit.

Question 9

How is the heart divided into two sides?

Answer 9

There’s a septum, a bone-like wall in middle of them.

Question 10

Some facts about left ventricle.

Answer 10

• The chamber that pushes the blood with huge force for it to be able to reach all parts of the body.
• Thickest walls as it has to push very hard.