BIOS 150 Week 7 Quiz Exam 3 (Latest Update 2025 / 2026) Anatomy and Physiology IV with Lab | Questions & Answers | 100% Correct | Grade A - Chamberlain

BIOS 150 Week 7 Quiz Exam 3 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The respiratory system is responsible for:

A. Digestion
B. Gas exchange
C. Blood clotting
D. Hormone production
Correct Answer: B
Rationale:It allows oxygen in and carbon dioxide out.

2. Breathing is also called:

A. Circulation
B. Ventilation
C. Digestion
D. Filtration
Correct Answer: B
Rationale:Movement of air in and out of lungs.

,3. The main organs of respiration are:

A. Heart and vessels
B. Lungs
C. Kidneys
D. Liver
Correct Answer: B
Rationale:Primary site of gas exchange.

4. Air enters the body through the:

A. Mouth only
B. Nose
C. Skin
D. Ears
Correct Answer: B
Rationale:Filters and warms air.

5. The trachea is also called the:

A. Windpipe
B. Food pipe
C. Artery
D. Vein
Correct Answer: A
Rationale:Carries air to lungs.

6. Bronchi are:

,A. Blood vessels
B. Air passages into lungs
C. Muscles
D. Nerves
Correct Answer: B
Rationale:Branch from trachea.

7. Bronchioles are:

A. Large airways
B. Smaller airways
C. Blood vessels
D. Nerves
Correct Answer: B
Rationale:Lead to alveoli.

8. Alveoli are:

A. Air sacs
B. Blood vessels
C. Nerves
D. Muscles
Correct Answer: A
Rationale:Site of gas exchange.

9. Gas exchange occurs by:

, A. Active transport
B. Diffusion
C. Osmosis
D. Filtration
Correct Answer: B
Rationale:Movement from high to low concentration.

10. Oxygen enters blood from:

A. Veins
B. Alveoli
C. Arteries
D. Heart
Correct Answer: B
Rationale:Diffuses into capillaries.

11. Carbon dioxide leaves blood into:

A. Heart
B. Alveoli
C. Veins
D. Brain
Correct Answer: B
Rationale:Exhaled out of body.

12. The diaphragm is a: