Key terms

Question 1

The heart (OVERVIEW)

Answer 1

4 chambers
- Right atrium/ Left atrium
- Right ventricle/ Left ventricle
- Atriums and ventricles are separated by valves to prevent backflow of blood.
- Left side and right side of the heart are separated by the septum.

Question 2

What is the systemic system?

Answer 2

Systemic- pumps oxygenated blood to the muscles (where O2 gets used) and deoxygenated blood back again.

Question 3

What is the pulmonary system?

Answer 3

Pulmonary- pumps deoxygenated blood to the lungs (get saturated with O2) and oxygenated blood back to the heart again.

Question 4

What is heart rate?

Answer 4

• The number of times the heart beats per minute.

Average= 72 bpm

Question 5

What is stroke volume?

Answer 5

• The volume of blood pumped out by the left ventricle per beat.

Average= 70 ml

Question 6

What is cardiac output?

Answer 6

• The volume of blood pumped out of the left ventricle per minute.
• Cardiac output is calculated by the following:
  Q= HR x SV

Average (male)= 5 L