WGU D313 Anatomy and Physiology Objective
Assessment 2025 | Up-to-Date Exam
Questions with Detailed Answers
1. Which of the following is the primary function of the respiratory
system?
a) Transport oxygen to tissues
b) Remove carbon dioxide from the body
c) Maintain body temperature
d) Secrete digestive enzymes
Answer: b) Remove carbon dioxide from the body
Rationale: The respiratory system is responsible for the exchange of
gases, primarily oxygen and carbon dioxide. Oxygen is brought into the
body, and carbon dioxide is expelled as a waste product of metabolism.
2. The role of hemoglobin in red blood cells is to:
a) Carry oxygen to tissues
b) Fight infections
c) Carry nutrients to cells
d) Regulate blood pressure
Answer: a) Carry oxygen to tissues
Rationale: Hemoglobin is a protein found in red blood cells that binds
to oxygen in the lungs and transports it through the bloodstream to
tissues throughout the body.
Assessment 2025 | Up-to-Date Exam
Questions with Detailed Answers
1. Which of the following is the primary function of the respiratory
system?
a) Transport oxygen to tissues
b) Remove carbon dioxide from the body
c) Maintain body temperature
d) Secrete digestive enzymes
Answer: b) Remove carbon dioxide from the body
Rationale: The respiratory system is responsible for the exchange of
gases, primarily oxygen and carbon dioxide. Oxygen is brought into the
body, and carbon dioxide is expelled as a waste product of metabolism.
2. The role of hemoglobin in red blood cells is to:
a) Carry oxygen to tissues
b) Fight infections
c) Carry nutrients to cells
d) Regulate blood pressure
Answer: a) Carry oxygen to tissues
Rationale: Hemoglobin is a protein found in red blood cells that binds
to oxygen in the lungs and transports it through the bloodstream to
tissues throughout the body.
