Body systems

Question 1

What is the percentage of oxygen in an expired breath?

Answer 1

16%

Question 2

What is the percentage of oxygen in an inspired breath?

Answer 2

20%

Question 3

Name the main component of the respiratory system?

Answer 3

Lungs

Question 4

What is the name of the red pigment that oxygen attaches to?

Answer 4

Haemoglobin

Question 5

What are platelets also known as?

Answer 5

Thrombocytes

Question 6

What is the correct name for white blood cells?

Answer 6

Leucocytes

Question 7

What is the correct name for red blood cells?

Answer 7

Erythrocytes

Question 8

Where does gaseous exchange occur?

Answer 8

Alveoli (air sacs)

Question 9

Where are red and white blood cells produced?

Answer 9

Bone marrow

Question 10

Where does external respiration occur?

Answer 10

In the lungs

Question 11

Where does internal respiration occur?

Answer 11

In cells

Question 12

7. Which blood vessel carries oxygenated blood from the lungs back to the heart?

Answer 12

Pulmonary vein

Question 13

What is the name of the blood vessel that carries deoxygenated blood from the heart to the lungs?

Answer 13

Pulmonary artery

Question 14

What is the name of the main component of the circulatory system?

Answer 14

Heart

Question 15

What is normal body temperature?

Answer 15

37oC

Question 16

When similar tissues group together and perform different functions they are called?

Answer 16

Organs

Question 17

What bony structure protects the heart and lungs?

Answer 17

Rib cage

Question 18

When similar cell types group together they are known as?

Answer 18

Tissue