Gas Exchange

What do you call this part of the human lung (seen through a microscope)?

• air sacs/alveoli

• lung cells

• capillaries

• bronchioles

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Blood which LEAVES the capillaries of the lungs have ______ carbon dioxide.

• more

• less

In the diagram, carbon dioxide diffuses from the air sac into the capillaries.

• true

• false

Tags

NGSS.MS-LS2-3

A tiny air sac inside a lung, adapted to diffuse oxygen easily.

• Bronchiole

• Trachea

• Alveolus

• Nasal Passage

Tags

NGSS.MS-LS1-3

The gas which the body exhales as waste is called...

• carbon dioxide

• argon

• oxygen

• nitrogen

Which of these is a way in which alveoli are adapted to work well?

• They are very large

• They have thick walls

• They have thin walls

• There are only a few of them

Which means to take into the lungs to gain oxygen?

• Inhale

• Exhale

• Respire

• Diffuse

Besides the mouth, how else can air enter the body from outside?

• Diffusion

• Skin

• Nasal Passage

• Stomach

The gas which we need to survive is called...

• carbon dioxide

• argon

• oxygen

• nitrogen

The gas which air is mostly made of is called...

• carbon dioxide

• argon

• oxygen

• nitrogen