9 gas exchange

Why is it difficult to breathe at high altitude?

• The percentage of o2 is lower

• The percentage of co2 is higher

• The partial pressure of co2 is lower

• The partial pressure of o2 is lower

What is the function of the bronchi?

• Transport air from nose to lungs
• Transport air from trachea to lungs
• Transport air from lungs to alveoli
• Transport air from alveoli to blood

The two main branches from the trachea (one to each lung)

• bronchi
• alveoli
• capillaries
• bronchioles

The air sacs that are covered with capillaries where gas exchange takes place

• bronchi
• lungs
• oxygen
• alveoli

Tags

NGSS.HS-LS2-5

Name the structure labelled #6

• alveoli

• bronchi

• trachea

• lungs

Name the structure labelled #8

• lungs

• trachea

• diaphragm

• alveoli

The fatty substance that lines the inner surface of the alveoli and prevents alveoli from collapsing.

• pleural fluid

• ciliated mucus

• surfactant

• mucus

Given the following structures:

1. larynx

2. nasal cavity

3. pharynx

4. trachea

Which of the following is the correct order that air would flow during inhalation.

• 1,2,3,4

• 2,3,1,4

• 2,1,3,4

• 4,2,3,1

Select ALL that apply to inspiration (3):

• Diaphragm moves up

• Ribs move in

• Ribs move out

• Diaphragm contracts

• Creates lower pressure in chest cavity

Cartilage is found in which structure?

• Alveolus

• Bronchiole

• Capillary

• Trachea