Circulatory and Respiratory System

Name the process by which organisms take in oxygen without using the lungs.

• Respiration

• Photosynthesis

• Diffusion

• Osmosis

__________ can take in oxygen through their skin but also have lungs.

• Amphibians

• Reptiles

• Birds

• Mammals

Lungs first appeared in which organisms?

• Fish

• Amphibians

• Reptiles

• Mammals

Lungs have a very small surface area to absorb oxygen.

• True

• False

How many metres squared of oxygen dissolving membranes do humans have?

• 20

• 50

• 75

• 100

Name the structures found in their millions at the ends of the bronchioles.

• Alveoli

• Capillaries

• Cilia

• Pleura

Carbon dioxide passes from blood to alveoli to be breathed out.

• True

• False

What is the muscle that contracts when a person inhales?

• Diaphragm

• Biceps

• Triceps

• Quadriceps

What type of cells carry oxygen around the body?

• red blood cells

• white blood cells

• skin cells

• nerves

The heart chamber that pumps blood at the highest pressure is:

• Right Atrium

• Left Atrium

• Right Ventricle

• Left Ventricle