1|Page
HESI A2 A&P 2025 | COMPREHENSIVE Q&A
FOR GUARANTEED SUCCESS
Which hormone controls sleep, mood, and appetite?
A. Serotonin.
B. Oxytocin.
C. Cortisol.
D. Aldosterone. - correct-answer-A. Oxytocin (choice B) facilitates birth and
breast-feeding. Cortisol (choice C) increases blood sugar and controls some
aspects of fat breakdown. Aldosterone (choice D) controls reabsorption of ions
and regulates blood pressure. Serotonin (choice A) is a neurotransmitter found in
the gut that regulates appetite and sleep as well as some aspects of mood.
Which part of the brain is most posterior?
A. Frontal lobe.
B. Parietal lobe.
C. Temporal lobe.
D. Occipital lobe. - correct-answer-D. The occipital lobe is farthest back in the
skull, posterior to the other parts of the brain.
Which of the following is an HDL cholesterol level that might warrant regular
testing?
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A. 70.
B. 60.
C. 50.
D. 40. - correct-answer-D. HDL ("good") cholesterol levels in healthy adults range
from around 40 to 120mh/dL, with the mean being a bit over 53. Smoking,
obesity, and a sedentary lifestyle may lead to lower HDL. A level of 40 would
indicate the need for regular monitoring.
How does a transverse section divide the body?
A. Into right and left regions.
B. Into upper and lower regions.
C. Into front and back regions.
D. Between the dorsal and ventral cavities. - correct-answer-B. A transverse
section is a cross section.
What is the function of amylase?
A. Breaking down starch.
B. Digesting fat.
C. Breaking down protein.
D. Absorbing water. - correct-answer-A. Amylase is present in saliva, where it
begins to break down starch into sugar.
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The spleen is part of the ___________.
A. nervous system.
B. integumentary system.
C. lymphatic system.
D. urinary system. - correct-answer-C. The spleen uses lymphocytes and
macrophages to filter out bacteria, dead tissue, and foreign matter.
Which minaral is important for the formation of red blood cells?
A. Selenium.
B. Calcium.
C. Magnesium.
D. Copper. - correct-answer-D. Although iron is vital for red blood formation,
copper is important for proper iron metabolism. A copper deficiency can quickly
lead to anemia.
The dorsal body cavity is _________ to the ventral body cavity.
A. medial.
B. deep.
C. posterior.
D. anterior. - correct-answer-C. The dorsal body cavity contains the spinal column,
making it posterior, or toward the back of the body, compared to the ventral body
cavity, which contains the structures of the chest and abdomen.
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Which organ system is primarily responsible for preventing water loss?
A. The nervous system.
B. The integumentary system.
C. The lymphatic system.
D. The urinary system. - correct-answer-B. The integumentary system (the skin
and its appendages) waterproofs the body from outside and guards against excess
fluid loss from inside.
Which is an anterior feature of the human head?
A. The nose.
B. The ears.
C. The occipital lobe.
D. The temporal lobe. - correct-answer-A. Something that is anterior is toward the
front of the body. The nose is the most anterior feature on the list of choices.
What is the primary hormone secreted by the thyroid?
A. Oxytocin.
B. TSH.
C. Adrenaline.
D. T4. - correct-answer-D. Thyroxine (T4) aids in the regulation of metabolism.
HESI A2 A&P 2025 | COMPREHENSIVE Q&A
FOR GUARANTEED SUCCESS
Which hormone controls sleep, mood, and appetite?
A. Serotonin.
B. Oxytocin.
C. Cortisol.
D. Aldosterone. - correct-answer-A. Oxytocin (choice B) facilitates birth and
breast-feeding. Cortisol (choice C) increases blood sugar and controls some
aspects of fat breakdown. Aldosterone (choice D) controls reabsorption of ions
and regulates blood pressure. Serotonin (choice A) is a neurotransmitter found in
the gut that regulates appetite and sleep as well as some aspects of mood.
Which part of the brain is most posterior?
A. Frontal lobe.
B. Parietal lobe.
C. Temporal lobe.
D. Occipital lobe. - correct-answer-D. The occipital lobe is farthest back in the
skull, posterior to the other parts of the brain.
Which of the following is an HDL cholesterol level that might warrant regular
testing?
,2|Page
A. 70.
B. 60.
C. 50.
D. 40. - correct-answer-D. HDL ("good") cholesterol levels in healthy adults range
from around 40 to 120mh/dL, with the mean being a bit over 53. Smoking,
obesity, and a sedentary lifestyle may lead to lower HDL. A level of 40 would
indicate the need for regular monitoring.
How does a transverse section divide the body?
A. Into right and left regions.
B. Into upper and lower regions.
C. Into front and back regions.
D. Between the dorsal and ventral cavities. - correct-answer-B. A transverse
section is a cross section.
What is the function of amylase?
A. Breaking down starch.
B. Digesting fat.
C. Breaking down protein.
D. Absorbing water. - correct-answer-A. Amylase is present in saliva, where it
begins to break down starch into sugar.
,3|Page
The spleen is part of the ___________.
A. nervous system.
B. integumentary system.
C. lymphatic system.
D. urinary system. - correct-answer-C. The spleen uses lymphocytes and
macrophages to filter out bacteria, dead tissue, and foreign matter.
Which minaral is important for the formation of red blood cells?
A. Selenium.
B. Calcium.
C. Magnesium.
D. Copper. - correct-answer-D. Although iron is vital for red blood formation,
copper is important for proper iron metabolism. A copper deficiency can quickly
lead to anemia.
The dorsal body cavity is _________ to the ventral body cavity.
A. medial.
B. deep.
C. posterior.
D. anterior. - correct-answer-C. The dorsal body cavity contains the spinal column,
making it posterior, or toward the back of the body, compared to the ventral body
cavity, which contains the structures of the chest and abdomen.
, 4|Page
Which organ system is primarily responsible for preventing water loss?
A. The nervous system.
B. The integumentary system.
C. The lymphatic system.
D. The urinary system. - correct-answer-B. The integumentary system (the skin
and its appendages) waterproofs the body from outside and guards against excess
fluid loss from inside.
Which is an anterior feature of the human head?
A. The nose.
B. The ears.
C. The occipital lobe.
D. The temporal lobe. - correct-answer-A. Something that is anterior is toward the
front of the body. The nose is the most anterior feature on the list of choices.
What is the primary hormone secreted by the thyroid?
A. Oxytocin.
B. TSH.
C. Adrenaline.
D. T4. - correct-answer-D. Thyroxine (T4) aids in the regulation of metabolism.
