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

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2025 WGU D313 Anatomy and Physiology Assessment | Precise Testing Questions with Full Explanations

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  • June 3, 2024
  • December 19, 2024
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  • 2023/2024
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  • 2025 wgu d313 anatomy and physiology assessment

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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 structures is primarily responsible for the
production of red blood cells?
A) Liver
B) Kidneys
C) Bone marrow
D) Spleen
Answer:
C) Bone marrow
Rationale:
The bone marrow is the primary site of red blood cell production
(hematopoiesis). Although the liver and spleen can play a role in blood
cell production under certain circumstances, bone marrow is the main
location where red blood cells are made.


2. Question:
Which of the following is responsible for the exchange of oxygen and
carbon dioxide in the lungs?
A) Alveoli
B) Bronchi
C) Trachea
D) Diaphragm
Answer:
A) Alveoli

,Rationale:
The alveoli are small air sacs in the lungs where the exchange of oxygen
and carbon dioxide takes place through diffusion. The bronchi and
trachea are part of the airways and serve to transport air, while the
diaphragm is a muscle involved in breathing but not in the exchange
process.


3. Question:
Which type of muscle is involuntary and striated?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Voluntary muscle
Answer:
B) Cardiac muscle
Rationale:
Cardiac muscle is involuntary (it operates automatically without
conscious control) and striated (has a banded appearance). Skeletal
muscle is voluntary and striated, while smooth muscle is involuntary
and non-striated.


4. Question:
The function of the kidneys includes all of the following EXCEPT:
A) Regulation of blood pressure
B) Regulation of electrolyte balance
C) Filtration of blood to form urine
D) Synthesis of insulin

,Answer:
D) Synthesis of insulin
Rationale:
The kidneys are involved in regulating blood pressure, electrolyte
balance, and filtering blood to form urine. Insulin is produced by the
pancreas, not the kidneys.


5. Question:
Which of the following hormones is produced by the pancreas to lower
blood glucose levels?
A) Glucagon
B) Insulin
C) Epinephrine
D) Thyroxine
Answer:
B) Insulin
Rationale:
Insulin is produced by the beta cells of the pancreas and is responsible
for lowering blood glucose levels. Glucagon, also produced by the
pancreas, raises blood glucose levels. Epinephrine is produced by the
adrenal glands and increases blood glucose in response to stress.
Thyroxine is produced by the thyroid gland and regulates metabolism.


6. Question:
Which of the following is the largest part of the human brain and is
responsible for higher cognitive functions such as thinking, memory,
and decision-making?

, A) Cerebellum
B) Brainstem
C) Cerebrum
D) Thalamus
Answer:
C) Cerebrum
Rationale:
The cerebrum is the largest part of the brain and is responsible for
higher cognitive functions such as thinking, reasoning, memory, and
decision-making. The cerebellum coordinates voluntary movements,
while the brainstem controls basic life functions, such as heart rate and
breathing. The thalamus relays sensory information.


7. Question:
Which part of the neuron is responsible for receiving signals from other
neurons?
A) Axon
B) Dendrites
C) Myelin sheath
D) Synaptic terminal
Answer:
B) Dendrites
Rationale:
Dendrites are the branching extensions of neurons that receive signals
from other neurons. The axon transmits electrical impulses away from
the cell body, while the myelin sheath speeds up transmission of
signals. The synaptic terminal releases neurotransmitters.

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