BIOS 256 Week 7 Quiz Exam 3 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which organ regulates blood volume and composition?
A. Heart
B. Kidney
C. Liver
D. Spleen
Correct Answer: B
Rationale: Kidneys filter blood, maintain electrolyte balance, and
regulate volume.
2. Which structure is the functional unit of the kidney?
A. Glomerulus
B. Nephron
C. Loop of Henle
D. Bowman's capsule
Correct Answer: B
Rationale: The nephron performs filtration, reabsorption, and
secretion to form urine.
,3. Which part of the nephron filters blood plasma?
A. Proximal tubule
B. Loop of Henle
C. Glomerulus
D. Distal tubule
Correct Answer: C
Rationale: The glomerulus filters blood under hydrostatic pressure
to produce filtrate.
4. Which structure surrounds the glomerulus?
A. Proximal tubule
B. Bowman's capsule
C. Loop of Henle
D. Collecting duct
Correct Answer: B
Rationale: Bowman's capsule collects filtrate from the glomerulus.
5. Which process moves substances from blood into nephron?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
Correct Answer: A
Rationale: Filtration is the movement of plasma and solutes into
Bowman's capsule.
,6. Which process moves substances from nephron back into
blood?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
Correct Answer: B
Rationale: Reabsorption returns water, glucose, and ions to the
bloodstream.
7. Which process moves substances from blood into nephron
tubules?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
Correct Answer: C
Rationale: Secretion adds substances like H+ and drugs into tubules
for excretion.
8. Which process eliminates urine from the body?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
, Correct Answer: D
Rationale: Excretion is the removal of urine containing wastes.
9. Which hormone regulates water reabsorption in kidneys?
A. Aldosterone
B. ADH (antidiuretic hormone)
C. Renin
D. Angiotensin II
Correct Answer: B
Rationale: ADH increases water reabsorption in the collecting
ducts.
10. Which hormone increases sodium reabsorption and potassium
excretion?
A. Aldosterone
B. ADH
C. Renin
D. Angiotensin II
Correct Answer: A
Rationale: Aldosterone from the adrenal cortex regulates electrolyte
balance.
11. Which enzyme converts angiotensinogen to angiotensin I?
A. Renin
B. ACE
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which organ regulates blood volume and composition?
A. Heart
B. Kidney
C. Liver
D. Spleen
Correct Answer: B
Rationale: Kidneys filter blood, maintain electrolyte balance, and
regulate volume.
2. Which structure is the functional unit of the kidney?
A. Glomerulus
B. Nephron
C. Loop of Henle
D. Bowman's capsule
Correct Answer: B
Rationale: The nephron performs filtration, reabsorption, and
secretion to form urine.
,3. Which part of the nephron filters blood plasma?
A. Proximal tubule
B. Loop of Henle
C. Glomerulus
D. Distal tubule
Correct Answer: C
Rationale: The glomerulus filters blood under hydrostatic pressure
to produce filtrate.
4. Which structure surrounds the glomerulus?
A. Proximal tubule
B. Bowman's capsule
C. Loop of Henle
D. Collecting duct
Correct Answer: B
Rationale: Bowman's capsule collects filtrate from the glomerulus.
5. Which process moves substances from blood into nephron?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
Correct Answer: A
Rationale: Filtration is the movement of plasma and solutes into
Bowman's capsule.
,6. Which process moves substances from nephron back into
blood?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
Correct Answer: B
Rationale: Reabsorption returns water, glucose, and ions to the
bloodstream.
7. Which process moves substances from blood into nephron
tubules?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
Correct Answer: C
Rationale: Secretion adds substances like H+ and drugs into tubules
for excretion.
8. Which process eliminates urine from the body?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
, Correct Answer: D
Rationale: Excretion is the removal of urine containing wastes.
9. Which hormone regulates water reabsorption in kidneys?
A. Aldosterone
B. ADH (antidiuretic hormone)
C. Renin
D. Angiotensin II
Correct Answer: B
Rationale: ADH increases water reabsorption in the collecting
ducts.
10. Which hormone increases sodium reabsorption and potassium
excretion?
A. Aldosterone
B. ADH
C. Renin
D. Angiotensin II
Correct Answer: A
Rationale: Aldosterone from the adrenal cortex regulates electrolyte
balance.
11. Which enzyme converts angiotensinogen to angiotensin I?
A. Renin
B. ACE
