WGU C203 Anatomy & Physiology Final Exam 2026/2027
COMPLETE ACCURATE TEST EXAM ACTUAL QUESTIONS AND
CORRECT DETAILED ANSWERS WITH RATIONALES
(VERIFIED SOLUTIONS) |ALREADY GRADED A+||NEWEST
VERSION |BEST DOCUMENT FOR EXAM-2026/2027
2026/2027 Frequently Most Tested Questions and
100% Accurate From Past papers | Graded A+ ,
Reviewed and Updated | 100% Guarantee Pass |
Latest Exam and Newest Version!!!
A nurse is reviewing how oxygen is transported in the blood. Which statement best
describes the primary way oxygen is carried?
a. Dissolved in plasma
b. Bound to hemoglobin
c. Attached to white blood cells
d. Converted into carbon dioxide
✔️ Correct Answer: B
Rationale:
Most oxygen (about 98%) is transported bound to hemoglobin in red blood cells,
forming oxyhemoglobin. Only a small amount is dissolved in plasma. Oxygen binds
,reversibly to the heme portion of hemoglobin, allowing for loading in the lungs and
unloading in tissues based on partial pressure gradients.
Which part of the nephron is primarily responsible for reabsorption of glucose and
amino acids?
a. Distal convoluted tubule
b. Loop of Henle
c. Proximal convoluted tubule
d. Collecting duct
✔️ Correct Answer: C
Rationale:
The proximal convoluted tubule reabsorbs nearly all glucose and amino acids under
normal conditions through active transport mechanisms, particularly sodium-glucose
cotransporters (SGLTs). This segment also reabsorbs the majority of water, electrolytes,
and other nutrients from the filtrate.
What is the primary function of alveoli in the lungs?
a. Warm inhaled air
b. Produce surfactant
c. Gas exchange
d. Trap dust particles
✔️ Correct Answer: C
Rationale:
Alveoli are the site of oxygen and carbon dioxide exchange between air and blood.
These tiny air sacs are lined with a thin epithelial layer surrounded by pulmonary
capillaries, facilitating rapid diffusion of gases. Type II alveolar cells produce surfactant,
but gas exchange is the primary function.
,Which hormone is released by the pancreas to lower blood glucose?
a. Glucagon
b. Insulin
c. Cortisol
d. Epinephrine
✔️ Correct Answer: B
Rationale:
Insulin decreases blood glucose by promoting cellular uptake and storage of glucose in
the form of glycogen. It also stimulates lipogenesis and protein synthesis while
inhibiting glycogenolysis and gluconeogenesis. Insulin is released by beta cells in the
pancreatic islets of Langerhans.
What is the main function of red blood cells?
a. Fight infection
b. Transport oxygen
c. Produce antibodies
d. Clot blood
✔️ Correct Answer: B
Rationale:
Red blood cells contain hemoglobin, which carries oxygen to tissues. Erythrocytes lack
nuclei and organelles to maximize space for hemoglobin. They transport approximately
98.5% of oxygen bound to hemoglobin and also assist in carbon dioxide transport via
carbaminohemoglobin and the bicarbonate buffer system.
Which structure controls the rate of breathing in the body?
a. Cerebellum
b. Medulla oblongata
c. Hypothalamus
d. Thalamus
, ✔️ Correct Answer: B
Rationale:
The medulla oblongata regulates respiratory rate and depth through the respiratory
center. It contains the dorsal respiratory group (DRG) and ventral respiratory group
(VRG) that generate the basic rhythm of breathing. The medulla also integrates input
from chemoreceptors responding to CO₂, O₂, and pH levels.
What is the primary role of platelets?
a. Oxygen transport
b. Immune defense
c. Blood clotting
d. Hormone transport
✔️ Correct Answer: C
Rationale:
Platelets are essential for hemostasis and formation of blood clots. They adhere to
damaged endothelium, become activated, and release granules containing ADP,
thromboxane A2, and serotonin to recruit additional platelets and promote
vasoconstriction. Platelets also provide a surface for coagulation factor assembly.
Which chamber of the heart receives oxygenated blood from the lungs?
a. Right atrium
b. Right ventricle
c. Left atrium
d. Left ventricle
✔️ Correct Answer: C
Rationale:
The left atrium receives oxygen-rich blood from the pulmonary veins. It then passes
blood through the mitral (bicuspid) valve into the left ventricle, which pumps it into the
systemic circulation. The right atrium receives deoxygenated blood from the body via
the superior and inferior vena cavae.
COMPLETE ACCURATE TEST EXAM ACTUAL QUESTIONS AND
CORRECT DETAILED ANSWERS WITH RATIONALES
(VERIFIED SOLUTIONS) |ALREADY GRADED A+||NEWEST
VERSION |BEST DOCUMENT FOR EXAM-2026/2027
2026/2027 Frequently Most Tested Questions and
100% Accurate From Past papers | Graded A+ ,
Reviewed and Updated | 100% Guarantee Pass |
Latest Exam and Newest Version!!!
A nurse is reviewing how oxygen is transported in the blood. Which statement best
describes the primary way oxygen is carried?
a. Dissolved in plasma
b. Bound to hemoglobin
c. Attached to white blood cells
d. Converted into carbon dioxide
✔️ Correct Answer: B
Rationale:
Most oxygen (about 98%) is transported bound to hemoglobin in red blood cells,
forming oxyhemoglobin. Only a small amount is dissolved in plasma. Oxygen binds
,reversibly to the heme portion of hemoglobin, allowing for loading in the lungs and
unloading in tissues based on partial pressure gradients.
Which part of the nephron is primarily responsible for reabsorption of glucose and
amino acids?
a. Distal convoluted tubule
b. Loop of Henle
c. Proximal convoluted tubule
d. Collecting duct
✔️ Correct Answer: C
Rationale:
The proximal convoluted tubule reabsorbs nearly all glucose and amino acids under
normal conditions through active transport mechanisms, particularly sodium-glucose
cotransporters (SGLTs). This segment also reabsorbs the majority of water, electrolytes,
and other nutrients from the filtrate.
What is the primary function of alveoli in the lungs?
a. Warm inhaled air
b. Produce surfactant
c. Gas exchange
d. Trap dust particles
✔️ Correct Answer: C
Rationale:
Alveoli are the site of oxygen and carbon dioxide exchange between air and blood.
These tiny air sacs are lined with a thin epithelial layer surrounded by pulmonary
capillaries, facilitating rapid diffusion of gases. Type II alveolar cells produce surfactant,
but gas exchange is the primary function.
,Which hormone is released by the pancreas to lower blood glucose?
a. Glucagon
b. Insulin
c. Cortisol
d. Epinephrine
✔️ Correct Answer: B
Rationale:
Insulin decreases blood glucose by promoting cellular uptake and storage of glucose in
the form of glycogen. It also stimulates lipogenesis and protein synthesis while
inhibiting glycogenolysis and gluconeogenesis. Insulin is released by beta cells in the
pancreatic islets of Langerhans.
What is the main function of red blood cells?
a. Fight infection
b. Transport oxygen
c. Produce antibodies
d. Clot blood
✔️ Correct Answer: B
Rationale:
Red blood cells contain hemoglobin, which carries oxygen to tissues. Erythrocytes lack
nuclei and organelles to maximize space for hemoglobin. They transport approximately
98.5% of oxygen bound to hemoglobin and also assist in carbon dioxide transport via
carbaminohemoglobin and the bicarbonate buffer system.
Which structure controls the rate of breathing in the body?
a. Cerebellum
b. Medulla oblongata
c. Hypothalamus
d. Thalamus
, ✔️ Correct Answer: B
Rationale:
The medulla oblongata regulates respiratory rate and depth through the respiratory
center. It contains the dorsal respiratory group (DRG) and ventral respiratory group
(VRG) that generate the basic rhythm of breathing. The medulla also integrates input
from chemoreceptors responding to CO₂, O₂, and pH levels.
What is the primary role of platelets?
a. Oxygen transport
b. Immune defense
c. Blood clotting
d. Hormone transport
✔️ Correct Answer: C
Rationale:
Platelets are essential for hemostasis and formation of blood clots. They adhere to
damaged endothelium, become activated, and release granules containing ADP,
thromboxane A2, and serotonin to recruit additional platelets and promote
vasoconstriction. Platelets also provide a surface for coagulation factor assembly.
Which chamber of the heart receives oxygenated blood from the lungs?
a. Right atrium
b. Right ventricle
c. Left atrium
d. Left ventricle
✔️ Correct Answer: C
Rationale:
The left atrium receives oxygen-rich blood from the pulmonary veins. It then passes
blood through the mitral (bicuspid) valve into the left ventricle, which pumps it into the
systemic circulation. The right atrium receives deoxygenated blood from the body via
the superior and inferior vena cavae.
