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Accurate WGU D313 2025 Objective Assessment | Detailed Anatomy and Physiology Exam Questions (westernGU) CA$31.06
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Accurate WGU D313 2025 Objective Assessment | Detailed Anatomy and Physiology Exam Questions (westernGU)

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Accurate WGU D313 2025 Objective Assessment | Detailed Anatomy and Physiology Exam Questions (westernGU)

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  • June 3, 2024
  • December 19, 2024
  • 26
  • 2023/2024
  • Exam (elaborations)
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  • accurate wgu d313 2024 objective assessment deta

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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 of the following is the primary function of the mitochondria in a
cell?
A. Protein synthesis
B. Energy production
C. Waste removal
D. DNA replication
Answer: B. Energy production
Rationale: Mitochondria are the powerhouse of the cell, producing ATP
through cellular respiration, which is the cell's primary energy source.


2. Question:
What type of joint is found between the cranial bones?
A. Synovial
B. Fibrous
C. Cartilaginous
D. Pivot
Answer: B. Fibrous
Rationale: Fibrous joints, such as sutures in the skull, are immovable
and connect the cranial bones.

,3. Question:
Which of the following ions plays a key role in muscle contraction?
A. Sodium
B. Potassium
C. Calcium
D. Magnesium
Answer: C. Calcium
Rationale: Calcium binds to troponin in muscle fibers, which allows
actin and myosin to interact and initiate contraction.


4. Question:
What is the primary function of hemoglobin in red blood cells?
A. Transporting nutrients
B. Carrying oxygen
C. Fighting infections
D. Clotting blood
Answer: B. Carrying oxygen
Rationale: Hemoglobin binds to oxygen in the lungs and delivers it to
tissues throughout the body.


5. Question:
Which part of the brain controls balance and coordination?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hypothalamus

,Answer: B. Cerebellum
Rationale: The cerebellum coordinates voluntary movements and
maintains balance and posture.


6. Question:
What is the structural and functional unit of the kidney?
A. Nephron
B. Glomerulus
C. Ureter
D. Renal cortex
Answer: A. Nephron
Rationale: The nephron is responsible for filtering blood and forming
urine.


7. Question:
Which layer of the skin contains melanocytes?
A. Epidermis
B. Dermis
C. Hypodermis
D. Subcutaneous
Answer: A. Epidermis
Rationale: Melanocytes, which produce melanin, are located in the
basal layer of the epidermis.


8. Question:
What is the role of the sinoatrial (SA) node in the heart?
A. Pumping blood to the lungs

, B. Initiating the heartbeat
C. Regulating blood pressure
D. Receiving blood from the vena cava
Answer: B. Initiating the heartbeat
Rationale: The SA node is the heart's natural pacemaker, generating
electrical impulses to initiate each heartbeat.


9. Question:
Which type of tissue is responsible for transmitting electrical impulses
in the body?
A. Epithelial
B. Connective
C. Nervous
D. Muscle
Answer: C. Nervous
Rationale: Nervous tissue is specialized for communication through
electrical signals.


10. Question:
What is the main function of the large intestine?
A. Absorption of nutrients
B. Digestion of proteins
C. Water and electrolyte absorption
D. Storage of bile
Answer: C. Water and electrolyte absorption
Rationale: The large intestine absorbs water and electrolytes from
undigested food, forming solid waste for excretion.

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