Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892



Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

A mammalian nephron contains the:

a. Bowman’s capsule, which delivers the filtrate to the glomerulus.

b. Bowman’s capsule, which filters fluids, 99% of which will beexcreted.

c. proximal convoluted tubule, which moves Na+ and K+ into the filtrate of the interstitial fluids.

d. proximal convoluted tubule, which reabsorbs K+, Na+, Cl-, and H2O.

e. proximal convoluted tubule, which lacks microvilli to easefluid movement through it.

Summary Introduction


Nephrons are the functional and structural units of the kidney. They are made up of renal corpuscles and tubules. Each kidney in humans contains more than 1 million nephrons, which are differentiated into various regions and carry out consecutive steps in the process of excretion.


Justification for the correct answer:

Option (d) is “PCT, which reabsorbs K+, Na+, Cl-, and water.” This is a true statement as the PCT is permeable to K+, Na+, Cl-, and water. K+ and Na+ ions get reabsorbed actively and Cl follows them, whereas water leaves by using the aquaporins. Hence, option (d) is correct.

Justifications for the incorrect answers:

Option (a) is “Bowman’s capsule, which delivers the filtrate to the glomerulus.” This is false as the nephron outlines the Bowman's capsule, the infolded area, which cups around the glomerulus. The capsule and the glomerulus are present in the renal cortex. When the blood runs through the glomerulus, the plasma passes through glomerular capillaries into the Bowman's capsule. So, it is an incorrect option.

Option (b) is “Bowman’s capsule, which filters 99% of the substances that are excreted.” This is false as on an average, more than 99% of the glomerular filtrate water gets reabsorbed in nephrons, leaving more than 1 liter to be removed daily in the form of urine...

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Some segments of a protein strand coil, somewhat like a metal spring, because a. amino acids at different place...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

A person takes a trip, driving with a constant speed of 89.5 km/h, except for a 22.0-min rest stop. If the pers...

Physics for Scientists and Engineers, Technology Update (No access codes included)

If Columbus didnt discover North America, then who did?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin

What is the systematic name for cisplatin?

Chemistry & Chemical Reactivity