What prevents the backflow of urine from the urinary bladder to the kidneys?

2 answers:

6 0

The urinary system is made up of the kidneys, bladder and ureters (tubes that connect the kidneys to the bladder). The kidneys act as filters removing extra fluid and waste from your blood to make urine. Urine passes from the kidneys into the ureters, which drain into the bladder. When the bladder is full, urine flows out of the body through a tube called the urethra. The ureters normally enter the bladder at a diagonal angle and have a special one-way valve system that prevents urine from flowing back up the ureters in the direction of the kidneys. If this system doesn’t work, urine can flow back towards the kidneys. This is called vesicoureteric reflux (also known as urinary reflux). Sometimes vesicoureteric reflux (VUR) can be associated with other 'plumbing' problems in the urinary tract and with small, damaged or malformed kidneys.

So I believe the answer is 1.

RSB [31]3 years ago

6 0

I think it is answer number 1

You might be interested in

What is the answer in the picture

igor_vitrenko [27]

Answer:

Im pretty sure its A if I read that right.

Explanation:

hope this helps

4 0

3 years ago

Which best describes probability

Leya [2.2K]

Probability: The chance of something happening and the likelihood of a particular event happening.

5 0

3 years ago

Read 2 more answers

While distinctly Anthropoids, some Platyrrhines maintain a few of traits that are typically represented only in Prosimians. For

crimeas [40]

Convergent evolution is the concept of two or more species evolving similar traits despite being completely unrelated to one another, including the absence of a common ancestor.

The Platyrrhines, more commonly known as "New World Monkeys", share many characteristics with the Prosimians. Some of these include:

Teeth layout
Diet
Eyesight
Sleeping habits

and more.

The Platyrrhines and the Prosimians are both nocturnal animals. Despite all other members of their family being active during the day, the Playrrhines have evolved nocturnal habits similar to that of the Prosimians. Aside from that, they feed on insects more so than fruit, which is reflected by the layout of their teeth, and have eyesight well adapted to dark conditions. All of these are traits they share with the Prosimians.

Despite being in different ecosystems and regions, and sharing no recent common ancestors, both of these species have evolved strikingly similar traits. This can be used to corroborate the theory of convergent evolution, which explains how two species can evolve very similar traits despite being unrelated.

To learn more visit:

brainly.com/question/3405872?referrer=searchResults

5 0

3 years ago

Cells are arranged to form different types of _____, which then work to perform specific jobs for the well-being of the animal.

Gelneren [198K]

Answer:

Cells are arranged to form different types of TISSUE, which then work to perform specific jobs for the well-being of the animal.

6 0

3 years ago

PLEASE HELP ME

musickatia [10]

When practicing birth control as natural family planning, it is not true that it is almost 100 percent effective. Birth control as natural family planning does require careful tracking of the menstrual cycle, demands focus on bodily changes, and does require women from having sex on days ovulating and following. Even if sex is is had outside ovulating days, it is possible to get pregnant, thus it is not 100 percent effective.

3 0

3 years ago