Practice exam

Practice Exam 4
1. A chief cell produces a substance called __________.

a. pepsinogen
b. hydrochloric acid
c. gastrin
d. lipase
e. pepsin

2. In response to a drop in blood volume, ___________ is secreted to increase sodium
reabsorption and __________ is released to increase permeability in the collecting duct.

a. antidiuretic hormone (ADH); aldosterone
b. angiotensin I; angiotensin II
c. aldosterone; antidiuretic hormone (ADH)
d. aldosterone; renin
e. e) carbonic anhydrase; angiotensin converting enzyme (ACE)

3. The Renal Corpuscle is a term used to describe________

a. Bowman’s capsule and the glomerulus
b. the nephron
c. the juxtaglomerular apparatus
d. the primary filtration unit
e. none of the above

4. Intrinsic factor is released from the ______ cells of the gastric pit to aid in ________
absorption.

a. chief; vitamin B-12
b. parietal; vitamin B-12
c. mucous; protein
d. g-cells, gastrin
e. parietal cells, protein

5. Parietal cells secrete ________ which converts ________.

a. Intrinsic factor; pepsinogen into pepsin
b. HCl; pepsinogen into pepsin
c. Pepsinogen; pepsin into proteins
d. gastric lipase; triglycerides into monoglycerides
e. none of the above

6. Renin

, a. Is released in response to decreased blood pressure
b. Converts angiotensin I to angiotensin II
c. Is secreted by the liver
d. None of the above

6. A high glomerular filtration rate (GFR) will cause the macula densa cells to release _______,
which will________.

a. renin; decrease blood pressure
b. renin; convert angiotensin I to angiotensin II
c. paracrine signals (vasomotion chemicals); cause constriction of the afferent
arteriole
d. paracrine signals (vasomotion chemicals); cause dilation of the afferent arteriole
e. angiotensin II; increase blood pressure

7. Increased antiduretic hormone (ADH) will cause the following result(s)

a) highly dilute urine
b) highly concentrated urine
c) decreased vascular permeability
d) decreased collecting duct permeability
e) none of the above

8. The hormone ______ is triggered by______ and binds to principal cells in the DCT (distal
convoluted tubule) to reabsorb Na+

a) aldosterone; angiotensin II
b) atrial natriuretic peptide (ANP); dehydration
c) antidiuretic hormone (ADH); thirst
d) parathyroid hormone (PTH); low blood pressure e) renin; high blood pressure

9. What is the correct path of fluid flow through a nephron?

a. Glomerular capsulenephron loopPCTCollecting ductDCT
b. Glomerular capsuleCollecting ductPCTnephron loopDCT
c. Collecting ductglomerular capsulenephron loopPCTDCT
d. Glomerular capsulePCTnephron loopDCTcollecting duct
e. None of the above

10. Where is the majority of glucose reabsorbed from the glomerular filtrate?

a. The collecting duct
b. The proximal convoluted tubule
c. The nephron loop