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2025 WGU D313 Anatomy and Physiology | Authentic Exam Questions with Detailed Responses (WesternGU) $17.99
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2025 WGU D313 Anatomy and Physiology | Authentic Exam Questions with Detailed Responses (WesternGU)

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2025 WGU D313 Anatomy and Physiology | Authentic Exam Questions with Detailed Responses WesternGU)

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  • June 18, 2024
  • December 19, 2024
  • 25
  • 2023/2024
  • Exam (elaborations)
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  • 2024 wgu d313 anatomy and physiology authentic e

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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

Question 1: Multiple Choice
Which organelle is primarily responsible for producing ATP in the cell?
A. Nucleus
B. Mitochondrion
C. Ribosome
D. Golgi apparatus
Answer: B. Mitochondrion
Rationale: The mitochondrion is the powerhouse of the cell, where
cellular respiration occurs, producing ATP. Other organelles have
different roles, such as the nucleus for genetic information, ribosomes
for protein synthesis, and the Golgi apparatus for processing and
packaging proteins.


Question 2: True/False
The pulmonary artery carries oxygen-rich blood.
Answer: False
Rationale: The pulmonary artery carries oxygen-poor blood from the
heart to the lungs for oxygenation.


Question 3: Fill-in-the-Blank

,The ________ is the part of the brain responsible for regulating balance
and coordination.
Answer: Cerebellum
Rationale: The cerebellum regulates balance, coordination, and fine
motor skills. It integrates sensory input to ensure smooth, coordinated
movement.


Question 4: Scenario-Based
A patient with a spinal cord injury at the cervical level is unable to
breathe independently. Which nerve is likely affected?
A. Phrenic nerve
B. Vagus nerve
C. Sciatic nerve
D. Radial nerve
Answer: A. Phrenic nerve
Rationale: The phrenic nerve, arising from the cervical spine (C3-C5),
innervates the diaphragm, essential for breathing. Damage at this level
compromises independent respiration.


Question 5: Multiple Choice
Which type of muscle tissue is involuntary and striated?
A. Skeletal
B. Cardiac
C. Smooth
D. Connective
Answer: B. Cardiac
Rationale: Cardiac muscle is striated and involuntary, found exclusively

,in the heart. Skeletal muscle is striated and voluntary, while smooth
muscle is non-striated and involuntary.


Question 6: Matching
Match the following hormones to their respective glands:
1. Insulin
2. Cortisol
3. Thyroxine
A. Adrenal glands
B. Pancreas
C. Thyroid gland
Answer:
1 - B. Pancreas
2 - A. Adrenal glands
3 - C. Thyroid gland
Rationale: Insulin is produced by the pancreas, cortisol by the adrenal
glands, and thyroxine by the thyroid gland.


Question 7: Multiple Choice
What is the primary function of the large intestine?
A. Absorption of nutrients
B. Digestion of proteins
C. Absorption of water
D. Production of bile

, Answer: C. Absorption of water
Rationale: The large intestine absorbs water and electrolytes from
indigestible food matter and forms solid waste. Nutrient absorption
occurs in the small intestine, and bile is produced by the liver.


Question 8: True/False
The SA node is known as the pacemaker of the heart.
Answer: True
Rationale: The sinoatrial (SA) node generates electrical impulses,
initiating and regulating the heartbeat, making it the natural pacemaker
of the heart.


Question 9: Multiple Choice
Which structure prevents food from entering the trachea during
swallowing?
A. Epiglottis
B. Uvula
C. Soft palate
D. Pharynx
Answer: A. Epiglottis
Rationale: The epiglottis is a flap of cartilage that closes over the
trachea during swallowing to prevent food from entering the airway.


Question 10: Short Answer
What is the primary role of hemoglobin in red blood cells?

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