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Anatomy and Physiology Objective Assessment WGU D313 2025 | Precise Testing Questions with Answers (westernGU) $17.99
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Anatomy and Physiology Objective Assessment WGU D313 2025 | Precise Testing Questions with Answers (westernGU)

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Anatomy and Physiology Objective Assessment WGU D313 2025 | Precise Testing Questions with Answers (westernGU)

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  • June 3, 2024
  • December 19, 2024
  • 22
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • anatomy and physiology objective assessment wgu d3

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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 organelle is responsible for energy production in the cell?
• A) Nucleus
• B) Mitochondrion
• C) Golgi apparatus
• D) Endoplasmic reticulum
Answer: B) Mitochondrion
Rationale: The mitochondrion is known as the "powerhouse" of the cell
because it generates ATP, the cell's main energy currency, through
cellular respiration.


2. What type of tissue lines the alveoli of the lungs?
• A) Simple squamous epithelium
• B) Simple cuboidal epithelium
• C) Stratified squamous epithelium
• D) Pseudostratified columnar epithelium
Answer: A) Simple squamous epithelium
Rationale: Simple squamous epithelium allows for efficient gas
exchange due to its thin structure.

,3. Which component of blood is primarily responsible for clotting?
• A) Red blood cells
• B) White blood cells
• C) Platelets
• D) Plasma
Answer: C) Platelets
Rationale: Platelets are cell fragments that play a critical role in clot
formation by aggregating at the site of injury and releasing clotting
factors.


4. What is the primary function of the large intestine?
• A) Nutrient absorption
• B) Production of digestive enzymes
• C) Water and electrolyte absorption
• D) Storage of bile
Answer: C) Water and electrolyte absorption
Rationale: The large intestine absorbs water and electrolytes from
indigestible food matter and compacts waste for elimination.


5. Which part of the brain is responsible for regulating balance and
coordination?
• A) Cerebrum
• B) Brainstem
• C) Cerebellum

, • D) Thalamus
Answer: C) Cerebellum
Rationale: The cerebellum coordinates voluntary movements and
maintains balance and posture.


6. Which hormone lowers blood glucose levels?
• A) Glucagon
• B) Insulin
• C) Cortisol
• D) Epinephrine
Answer: B) Insulin
Rationale: Insulin is secreted by the pancreas and facilitates the uptake
of glucose by cells, thereby lowering blood glucose levels.


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


8. Which ion is essential for muscle contraction?

, • A) Sodium
• B) Potassium
• C) Calcium
• D) Chloride
Answer: C) Calcium
Rationale: Calcium ions bind to troponin, enabling the interaction
between actin and myosin filaments for muscle contraction.


9. Where does the majority of nutrient absorption occur in the
digestive system?
• A) Stomach
• B) Small intestine
• C) Large intestine
• D) Pancreas
Answer: B) Small intestine
Rationale: The small intestine is lined with villi and microvilli, which
greatly increase the surface area for nutrient absorption.


10. Which blood vessel carries oxygenated blood from the lungs to the
heart?
• A) Pulmonary artery
• B) Pulmonary vein
• C) Aorta
• D) Inferior vena cava

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