1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
iren [92.7K]
3 years ago
7

The __________ are an important part of the kidney's urine-concentrating mechanism found surrounding the nephron loops (loops of

Henle) of juxtamedullary nephrons.
Biology
1 answer:
Olegator [25]3 years ago
8 0

Answer:

Vasa recta

Explanation:

Concentration of urine occurs by counter current mechanism. It is a mechanism to retain water in the body and it occurs by vasa recta and loop of Henle. Vasa rectae are the peritubular capillaries found near the loop of Henle (LOH). The blood flow in opposite directions in the two limbs of vasa rectae and also in the two limbs of LOH. The flow of fluid in the descending limb of LOH is in opposite direction to the flow of blood in ascending limb of vasa retae and vice versa. These counter current systems significantly contribute to the concentration of urine in the kidneys.

It is the cyclic movement of Na+, Cl- from the ascending limb of loop of Henle to the descending limb of vasa rectae via the medullary interstitial fluid. This is responsible for 5 % absorption of water in the descending limb of LOH, making the filtrate hypertonic. Due to this the concentration of Na+ and Cl- is more in the renal medulla. The osmolarity increases from 300 to 1200 mOsml/l from cortex to inner medulla, concentrating the urine.

You might be interested in
Cuales son las estructuras fundamentales en toda celula?
Kamila [148]

Answer:

Una célula consta de tres partes: la membrana celular, el núcleo y, entre las dos, el citoplasma.

Explanation:

Usado traducir, no hablo ni escribo bien el español, pero puedo leer.

6 0
2 years ago
All the following rely on ATP as a source of energy except
JulsSmile [24]

Answer:

b. diffusion and osmosis across semi-permeable membranes

Explanation:

ATP (adenosine triphosphate) is a high energy carrying molecule in the system of living organisms. It posseses the ability to store and release energy for use by organisms during biochemical activities. However, some processes do not require ATP to occur and are called PASSIVE TRANSPORT while those that require energy (ATP) are called ACTIVE TRANSPORT.

In the above options, the processes listed as follows require ATP to occur:

- The active transport of glucose from the small intestine to the blood

- The movement of the flagella of sperm for motility

- Exocytosis of waste substances across a semi-permeable membrane

However, the diffusion and osmosis across semi-permeable membranes, which is a passive transport does not require ATP.

7 0
3 years ago
How can an increase in carbon dioxide affect an ecosystem’s average temperature?
Sergio039 [100]

Answer: Let me help you, its affects the Ecosystem because it basically heats the planet up. It causes the balance of air to shift and become extremly warm.

Explanation:

8 0
3 years ago
I dont know where to put this under
Over [174]
I think it’s evaporation proton
4 0
3 years ago
Read 2 more answers
An ___ ___ is observed due to the unequal transport of charge by a transport mechanism that occurs across a plasma membrane.
insens350 [35]

Answer:

An electrogenic effect

Explanation:

An electrogenic transport is a process where there is a translocation of net charge across the membrane. E.g of electrogenic channels are Na+, K+, Ca2+, and Cl− channels.

7 0
3 years ago
Other questions:
  • Suppose you could selectively prevent production of a-amylase or oligo-1,6-glucosidase in an organism that normally hydrolyzes s
    15·2 answers
  • A breif summary of how a flowering plant reproduces
    14·1 answer
  • ____ order arranges labels in reverse alphabetical order, from z to<br> a.
    5·1 answer
  • Need help with this don’t understand
    15·1 answer
  • PLEASE HELP. I WILL GIVE YOU BRAINLIEST!
    9·2 answers
  • True or False: In human beings, fertilization occurs externally.
    9·1 answer
  • Which type of bacteria causes tetanus?
    8·1 answer
  • Different finch species have beaks of different shapes and sizes. What do these beak differences tell us?
    15·1 answer
  • All of the following characteristics of hormones except Select one: a. Hormones alter activity in target cells b. Hormones inter
    11·1 answer
  • What is blood consumption?​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!