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2025 Anatomy and Physiology WGU D313 | Correct and Updated Objective Exam Questions with Answers (westernGU) $17.99
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2025 Anatomy and Physiology WGU D313 | Correct and Updated Objective Exam Questions with Answers (westernGU)

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  • Human Anatomy And Physiology

2025 Anatomy and Physiology WGU D313 | Correct and Updated Objective Exam Questions with Answers (westernGU)

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  • June 3, 2024
  • December 19, 2024
  • 27
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • 2024 anatomy and physiology wgu d313 correct and

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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. Question:
Which layer of the skin contains the blood vessels and nerve endings
responsible for sensation?
A. Epidermis
B. Dermis
C. Hypodermis
D. Stratum basale
Answer: B. Dermis
Rationale: The dermis is the middle layer of the skin and contains blood
vessels, nerve endings, and connective tissue, which support the
epidermis and facilitate sensation.


2. Question:
What is the primary function of the alveoli in the respiratory system?
A. Transport oxygen in the blood
B. Produce mucus to trap pathogens
C. Exchange gases between air and blood
D. Filter air entering the lungs
Answer: C. Exchange gases between air and blood
Rationale: The alveoli are small sacs in the lungs where oxygen and
carbon dioxide exchange occurs with blood through the capillary walls.

,3. Question:
Which part of the nephron is primarily responsible for the filtration of
blood?
A. Proximal convoluted tubule
B. Loop of Henle
C. Bowman's capsule
D. Collecting duct
Answer: C. Bowman's capsule
Rationale: The Bowman's capsule surrounds the glomerulus and is the
site of initial blood filtration in the kidney.


4. Question:
What type of joint is the knee classified as?
A. Ball-and-socket
B. Hinge
C. Pivot
D. Saddle
Answer: B. Hinge
Rationale: The knee joint allows movement primarily in one plane, like
a hinge, facilitating flexion and extension.


5. Question:
Which ion is most critical for muscle contraction?
A. Sodium
B. Potassium
C. Calcium
D. Magnesium

,Answer: C. Calcium
Rationale: Calcium ions play a key role in the interaction between actin
and myosin filaments during muscle contraction by binding to troponin.


6. Question:
What is the function of hemoglobin in the blood?
A. To transport nutrients to tissues
B. To maintain blood pH
C. To bind and carry oxygen
D. To initiate clotting
Answer: C. To bind and carry oxygen
Rationale: Hemoglobin, a protein in red blood cells, binds oxygen in the
lungs and transports it to tissues throughout the body.


7. Question:
Which of the following hormones increases blood glucose levels?
A. Insulin
B. Glucagon
C. Oxytocin
D. Prolactin
Answer: B. Glucagon
Rationale: Glucagon, released by the pancreas, stimulates the liver to
convert stored glycogen into glucose, raising blood glucose levels.


8. Question:
Where does most nutrient absorption occur in the digestive system?
A. Stomach

, B. Small intestine
C. Large intestine
D. Esophagus
Answer: B. Small intestine
Rationale: The small intestine is equipped with villi and microvilli to
maximize surface area for efficient nutrient absorption.


9. Question:
Which part of the brain is responsible for coordinating voluntary muscle
movements?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hypothalamus
Answer: B. Cerebellum
Rationale: The cerebellum coordinates voluntary movements and helps
maintain balance and posture.


10. Question:
What is the primary purpose of red bone marrow?
A. Store minerals like calcium
B. Produce blood cells
C. Act as a shock absorber
D. Provide structural support
Answer: B. Produce blood cells
Rationale: Red bone marrow is the site of hematopoiesis, where red
blood cells, white blood cells, and platelets are formed.

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