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Ostrovityanka [42]
2 years ago
8

Describe the structure of the kidney and include structure of nephron as well

Biology
1 answer:
asambeis [7]2 years ago
4 0

Answer:

Generally, mammals have a pair of bran-shaped kidneys. The mammalian kidney has 2 distinct regions, an outer renal cortex and inner renal medulla. Both regions are packed with microscopic excretory tubules, nephrons, and their associated blood vessels. Each nephron consists of a single long tubule and a ball of capillaries, known as glomerulus. The blind end of the tubule forms a cup-shaped swelling called Bowman’s capsule, that surround the glomerulus. From Bowman’s capsule, the filtrate passes through 3 regions of the nephron which are proximal tubule, the loop of Henle. A hairpin turns with a descending limb and an ascending limb and the distal tubule. The distal tubule empties into a collecting duct, which receives processed filtrate from many nephrons. The many collecting ducts empty into the renal pelvis, which is drained by ureter.

For the structure of nephron, each nephron is supplied with blood by an afferent arteriole, a branch of the renal artery that subdivides into the capillaries of the glomerulus. The capillaries converge as they leave the glomerulus, forming an efferent arteriole. It is surrounded by the Bowman’s capsule. The double-walled epithelial Bowman’s capsule is formed by the invagination of the blind end of the nephron. The glomerulus and Bowman’s capsule form the first region of the nephron and is known as the renal corpuscle or the Malpighian body. The capillary walls are composed of a single layer of endothelial cells with openings between them with a diameter 50-100nm. These cells are pressed up against basement membrane which completely envelops each capillary, separating the blood in the capillary from the lumen of Bowman’s capsule. The inner layer of the Bowman’s capsule is composed of a cell called podocytes which have arms that give off structures resembling tube-feet called foot processes or secondary processes. The secondary processes support the basement membrane and capillaries beneath it and gaps between the processes (slit pores) facilitate the process of filtration. The Malpighian body leads into the remainder of the tubule.

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2
jeka57 [31]

Answer:

Either (1.) Fossils or (2) Radiometric dating.

Explanation:

Fossils are an obvious answer to this, but radiometric dating is the method most scientists use to find the age of rocks. Radioactive isotopes break down predictably, so the farther along this process is, the older the rock is.

3 0
2 years ago
All BUT one descriptive phrase applies to the illustration of water. That is
Elanso [62]
Are you referring to this question?

All BUT one descriptive phrase applies to the illustration of water. That is

A) water is a polar molecule.     

B) the empirical formula of water is HO.                    

C) the shape of a water molecule is bent. 

D) the molecular formula of water is H2O.


If you are, then the answer would be letter b. the empirical formula of water is HO.<span>  </span>

<span>>Water Molecular Formula</span><span>: H</span><span>2</span><span>O</span>

<span>>Water </span>Empirical Formula: H2O

5 0
4 years ago
What is phrenology, and what role did it play in the development of ideas about brain localization?
Eva8 [605]

Answer:

Hello YOU!

Explanation:

Phrenology was a science of character divination, faculty psychology, theory of brain and what the 19th-century phrenologists called "the only true science of mind."Phrenology came from the theories of the idiosyncratic Viennese physician Franz Joseph Gall (1758-1828).

Gall believed that the bumps and uneven geography of the human skull were caused by pressure exerted from the brainunderneath. He divided the brain into sections that corresponded to certain behaviors and traits that he called fundamental faculties. This is referred to as localization of function.

Phrenology is considered pseudoscience today, but it was actually a vast improvement over that era's prevailing views of personality. ... But phrenology may be undergoing a redemption of sorts. Not the skull part—that's still considered bunk.

Phrenology was particularly popular in the U.S. because it fit so well with the idea of the American dream–the notion that we can accomplish our goals despite a humble heritage. Spurzheim believed that the brain was like a muscle that could be exercised.

4 0
3 years ago
3. Given the inequality 4x + 5y 2 12, determine
Anika [276]

Answer:

x= 0, y = 2

Explanation:

4x + 5y +2 = 12

Let's suppose that

x = 0

y = 2

By putting the values of x and y

4(0) + 5( 2) + 2  = 12

0 + 10 + 2 = 12

12 = 12

Hence, it is proved that x = 0 and y = 2

5 0
3 years ago
Postive and negative of entertainmeant
maksim [4K]

Answer:

Positive - give pleasure to the watcher

Negative - uses time the watcher could've spent doing something else, the watcher can never get that time back again.

Explanation:

Positive - give pleasure to the watcher

Negative - uses time the watcher could've spent doing something else, the watcher can never get that time back again.

6 0
3 years ago
Read 2 more answers
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