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UTA A&P II PRACTICE EXAM CH 18-21
2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
1) Which of these descriptions best matches the term B
lymphocytes?
A) produce antibodies in response to antigens
B) kill bacteria using hydrogen peroxide
C) adhere to collagen beneath endothelium
D) often elevated in allergic individuals
E) coordinate immune response - correct answer-A) produce
antibodies in response to antigens
2) Which of the following is a function of the blood?
A) transport of gases
B) transport of nutrients and wastes
C) transport of body heat
D) defense against toxins and pathogens
E) all of the above - correct answer-E) all of the above
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3) _______controls release of glucocorticoids; _____
stimulates testosterone secretion in the testes; ______ causes
the kidneys to retain sodium.
A) CRH, luteinizing hormone, aldosterone.
B) ACTH, FSH, ADH.
C) ACTH, luteinizing hormone, aldosterone.
D) ACTH, luteinizing hormone, ADH.
E) CRH, FSH, ADH. - correct answer-C) ACTH, luteinizing
hormone, aldosterone.
4) Hemolytic disease of the newborn may result if
A) the mother is Rh positive and the father is Rh negative.
B) both the father and the mother are Rh positive.
C) an Rh-positive mother carries an Rh-negative fetus.
D) an Rh-negative mother carries an Rh-positive fetus.
E) both the father and the mother are Rh negative - correct
answer-D) an Rh-negative mother carries an Rh-positive fetus.
5) Acetylcholine slows the heart because it
A) opens potassium ion channels in SA node cells.
B) decreases the threshold.
C) opens sodium-calcium ion channels in SA node cells.
D) causes the pacemaker potential to depolarize more quickly.
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E) A and C only - correct answer-A) opens potassium ion
channels in SA node cells.
6) The chief differences between plasma and interstitial fluid
involves the
A) concentration of electrolytes.
B) concentration of proteins.
C) concentration of nitrogen wastes.
D) concentration of glucose.
E) concentration of water. - correct answer-B) concentration of
proteins.
7) Blood returning to the heart from the systemic circuit first
enters the
A) right atrium.
B) conus arteriosus.
C) left atrium.
D) left ventricle.
E) right ventricle. - correct answer-A) right atrium.
8) The pulmonary semilunar valve prevents backward flow into
the
UTA A&P II PRACTICE EXAM CH 18-21
2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
1) Which of these descriptions best matches the term B
lymphocytes?
A) produce antibodies in response to antigens
B) kill bacteria using hydrogen peroxide
C) adhere to collagen beneath endothelium
D) often elevated in allergic individuals
E) coordinate immune response - correct answer-A) produce
antibodies in response to antigens
2) Which of the following is a function of the blood?
A) transport of gases
B) transport of nutrients and wastes
C) transport of body heat
D) defense against toxins and pathogens
E) all of the above - correct answer-E) all of the above
, Page | 2
3) _______controls release of glucocorticoids; _____
stimulates testosterone secretion in the testes; ______ causes
the kidneys to retain sodium.
A) CRH, luteinizing hormone, aldosterone.
B) ACTH, FSH, ADH.
C) ACTH, luteinizing hormone, aldosterone.
D) ACTH, luteinizing hormone, ADH.
E) CRH, FSH, ADH. - correct answer-C) ACTH, luteinizing
hormone, aldosterone.
4) Hemolytic disease of the newborn may result if
A) the mother is Rh positive and the father is Rh negative.
B) both the father and the mother are Rh positive.
C) an Rh-positive mother carries an Rh-negative fetus.
D) an Rh-negative mother carries an Rh-positive fetus.
E) both the father and the mother are Rh negative - correct
answer-D) an Rh-negative mother carries an Rh-positive fetus.
5) Acetylcholine slows the heart because it
A) opens potassium ion channels in SA node cells.
B) decreases the threshold.
C) opens sodium-calcium ion channels in SA node cells.
D) causes the pacemaker potential to depolarize more quickly.
, Page | 3
E) A and C only - correct answer-A) opens potassium ion
channels in SA node cells.
6) The chief differences between plasma and interstitial fluid
involves the
A) concentration of electrolytes.
B) concentration of proteins.
C) concentration of nitrogen wastes.
D) concentration of glucose.
E) concentration of water. - correct answer-B) concentration of
proteins.
7) Blood returning to the heart from the systemic circuit first
enters the
A) right atrium.
B) conus arteriosus.
C) left atrium.
D) left ventricle.
E) right ventricle. - correct answer-A) right atrium.
8) The pulmonary semilunar valve prevents backward flow into
the
