BIOS 150 Week 7 Quiz Exam final (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The primary function of the respiratory system is:
A. Hormone production
B. Gas exchange
C. Blood filtration
D. Nutrient absorption
Correct Answer: B
Rationale:Supplies oxygen to the body and removes carbon dioxide.
2. The upper respiratory tract includes:
A. Trachea and bronchi
B. Nose, pharynx, and larynx
C. Alveoli only
D. Lungs
Correct Answer: B
Rationale:Filters, warms, and moistens air before it reaches lower
structures.
,3. The lower respiratory tract includes:
A. Nose and pharynx
B. Trachea, bronchi, bronchioles, and lungs
C. Mouth only
D. Nasal cavity
Correct Answer: B
Rationale:Responsible for conducting air to alveoli for gas
exchange.
4. The larynx contains:
A. Trachea
B. Vocal cords
C. Alveoli
D. Bronchi
Correct Answer: B
Rationale:Voice production occurs here.
5. The epiglottis:
A. Produces oxygen
B. Prevents food from entering the airway
C. Filters air
D. Expands lungs
Correct Answer: B
Rationale:Covers the trachea during swallowing.
,6. The trachea is supported by:
A. Bone
B. Cartilage rings
C. Smooth muscle only
D. Nerves
Correct Answer: B
Rationale:Keeps the airway open during breathing.
7. Bronchi branch into:
A. Bronchioles
B. Alveoli directly
C. Trachea
D. Capillaries
Correct Answer: A
Rationale:Smaller airways that lead to alveoli.
8. Alveoli are:
A. Glands
B. Air sacs for gas exchange
C. Muscles
D. Bones
Correct Answer: B
Rationale:Thin-walled structures where oxygen and carbon dioxide
diffuse.
, 9. Gas exchange occurs by:
A. Active transport
B. Diffusion
C. Filtration
D. Osmosis
Correct Answer: B
Rationale:Gases move from areas of high to low concentration.
10. Oxygen diffuses into blood because:
A. Higher in blood
B. Higher in alveoli
C. Lower in alveoli
D. Equal concentration
Correct Answer: B
Rationale:Follows the concentration gradient into capillaries.
11. Carbon dioxide diffuses out because:
A. Higher in alveoli
B. Higher in blood
C. Equal in both
D. No gradient
Correct Answer: B
Rationale:CO₂ moves from blood to alveoli to be exhaled.
12. The diaphragm:
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The primary function of the respiratory system is:
A. Hormone production
B. Gas exchange
C. Blood filtration
D. Nutrient absorption
Correct Answer: B
Rationale:Supplies oxygen to the body and removes carbon dioxide.
2. The upper respiratory tract includes:
A. Trachea and bronchi
B. Nose, pharynx, and larynx
C. Alveoli only
D. Lungs
Correct Answer: B
Rationale:Filters, warms, and moistens air before it reaches lower
structures.
,3. The lower respiratory tract includes:
A. Nose and pharynx
B. Trachea, bronchi, bronchioles, and lungs
C. Mouth only
D. Nasal cavity
Correct Answer: B
Rationale:Responsible for conducting air to alveoli for gas
exchange.
4. The larynx contains:
A. Trachea
B. Vocal cords
C. Alveoli
D. Bronchi
Correct Answer: B
Rationale:Voice production occurs here.
5. The epiglottis:
A. Produces oxygen
B. Prevents food from entering the airway
C. Filters air
D. Expands lungs
Correct Answer: B
Rationale:Covers the trachea during swallowing.
,6. The trachea is supported by:
A. Bone
B. Cartilage rings
C. Smooth muscle only
D. Nerves
Correct Answer: B
Rationale:Keeps the airway open during breathing.
7. Bronchi branch into:
A. Bronchioles
B. Alveoli directly
C. Trachea
D. Capillaries
Correct Answer: A
Rationale:Smaller airways that lead to alveoli.
8. Alveoli are:
A. Glands
B. Air sacs for gas exchange
C. Muscles
D. Bones
Correct Answer: B
Rationale:Thin-walled structures where oxygen and carbon dioxide
diffuse.
, 9. Gas exchange occurs by:
A. Active transport
B. Diffusion
C. Filtration
D. Osmosis
Correct Answer: B
Rationale:Gases move from areas of high to low concentration.
10. Oxygen diffuses into blood because:
A. Higher in blood
B. Higher in alveoli
C. Lower in alveoli
D. Equal concentration
Correct Answer: B
Rationale:Follows the concentration gradient into capillaries.
11. Carbon dioxide diffuses out because:
A. Higher in alveoli
B. Higher in blood
C. Equal in both
D. No gradient
Correct Answer: B
Rationale:CO₂ moves from blood to alveoli to be exhaled.
12. The diaphragm:
