What are alveoli?

Vocabulary Test: Gas Exchange in Humans

Quiz
•
Biology
•
9th Grade
•
Easy
faith ming
Used 5+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tiny, thin-walled air sacs in the lungs
Divisions of the trachea
Muscles found between the ribs
Specialised cells that secrete mucus
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the breathing rate?
The number of breaths taken per minute
The volume of air in the lungs
The pressure in the thorax
The concentration of oxygen in the air
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of cilia?
Waft substances across the surface of the tissue
Secrete mucus
Contract during inhalation
Exchange respiratory gases
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens during expiration?
The diaphragm relaxes and the ribcage is pulled down
The diaphragm contracts and the ribcage is raised
Air moves into the lungs
The thoracic pressure falls
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the composition of expired air?
Higher concentration of carbon dioxide
Higher concentration of oxygen
Equal concentration of gases
Lower concentration of water vapour
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of goblet cells?
Secrete mucus
Exchange gases
Contract during breathing
Support the trachea
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of the diaphragm?
Separates the thorax and abdomen
Supports the trachea
Controls rib movement
Secretes mucus
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