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2025 WGU D313 Anatomy and Physiology Test | Current and Detailed Objective Assessment Questions (westernGU) CA$25.14
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2025 WGU D313 Anatomy and Physiology Test | Current and Detailed Objective Assessment Questions (westernGU)

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2025 WGU D313 Anatomy and Physiology Test | Current and Detailed Objective Assessment Questions (westernGU)

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  • June 3, 2024
  • December 19, 2024
  • 22
  • 2023/2024
  • Exam (elaborations)
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  • 2024 wgu d313 anatomy and physiology test curren

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  • Human anatomy and physiology
  • Human anatomy and physiology

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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 red blood cells?
A. Fight infection
B. Transport oxygen
C. Clot blood
D. Store iron
Answer: B. Transport oxygen
Rationale: Red blood cells contain hemoglobin, which binds to oxygen
in the lungs and transports it to tissues throughout the body.


2. What is the role of the parathyroid hormone (PTH)?
A. Increase blood calcium levels
B. Lower blood calcium levels
C. Regulate sodium levels
D. Stimulate red blood cell production
Answer: A. Increase blood calcium levels
Rationale: PTH stimulates the release of calcium from bones, increases
calcium absorption in the intestines, and decreases calcium excretion in
the urine to raise blood calcium levels.


3. Which organ is primarily responsible for filtering waste products
from the blood?
A. Liver

,B. Kidney
C. Pancreas
D. Spleen
Answer: B. Kidney
Rationale: The kidneys filter blood to remove waste products and
excess fluids, which are then excreted as urine.


4. What type of joint is found in the shoulder?
A. Hinge
B. Ball-and-socket
C. Pivot
D. Saddle
Answer: B. Ball-and-socket
Rationale: The shoulder joint is a ball-and-socket joint, allowing a wide
range of motion in multiple directions.


5. Which of the following is the main structural component of the cell
membrane?
A. Proteins
B. Carbohydrates
C. Phospholipids
D. Nucleic acids
Answer: C. Phospholipids
Rationale: The cell membrane is primarily composed of a phospholipid
bilayer, which provides structure and regulates the passage of
substances.

,6. During which phase of the cardiac cycle does the heart contract to
pump blood?
A. Diastole
B. Systole
C. Atrial relaxation
D. Ventricular filling
Answer: B. Systole
Rationale: Systole is the phase during which the heart muscles contract
to pump blood out of the chambers.


7. Which part of the brain controls balance and coordination?
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Hypothalamus
Answer: B. Cerebellum
Rationale: The cerebellum is responsible for maintaining balance,
coordination, and fine motor control.


8. Which blood vessel carries oxygenated blood from the lungs to the
heart?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Superior vena cava
Answer: B. Pulmonary vein
Rationale: The pulmonary veins carry oxygenated blood from the lungs
to the left atrium of the heart.

, 9. What is the main function of the large intestine?
A. Absorb nutrients
B. Produce bile
C. Absorb water and electrolytes
D. Store glycogen
Answer: C. Absorb water and electrolytes
Rationale: The large intestine absorbs water and electrolytes from
indigestible food material and forms solid waste (feces).


10. What type of muscle tissue is found in the walls of hollow organs,
such as the stomach?
A. Skeletal muscle
B. Cardiac muscle
C. Smooth muscle
D. Voluntary muscle
Answer: C. Smooth muscle
Rationale: Smooth muscle is involuntary and found in the walls of
hollow organs, where it facilitates movements such as peristalsis.




11. Which of the following hormones is released by the pancreas to
lower blood glucose levels?
A. Insulin
B. Glucagon
C. Epinephrine
D. Cortisol

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