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
wariber [46]
3 years ago
14

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

Biology
2 answers:
crimeas [40]3 years ago
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
Domestic cattle often have interactions with wild animals. In South America,
scZoUnD [109]

Answer:

Bats are the only mammals that can fly, but vampire bats have an even more interesting distinction—they are the only mammals that feed entirely on blood.

Nocturnal Behavior

These notorious bats sleep during the day in total darkness, suspended upside down from the roofs of caves. They typically gather in colonies of about 100 animals, but sometimes live in groups of 1,000 or more. In one year, a 100-bat colony can drink the blood of 25 cows.

During the darkest part of the night, common vampire bats emerge to hunt. Sleeping cattle and horses are their usual victims, but they have been known to feed on people as well. The bats drink their victim's blood for about 30 minutes. They don't remove enough blood to harm their host, but their bites can cause nasty infections and disease.

Hunting for Blood

Vampire bats strike their victims from the ground. They land near their prey and approach it on all fours. The bats have few teeth because of their liquid diet, but those they have are razor sharp. Each bat has a heat sensor on its nose that points it toward a spot where warm blood is flowing just beneath its victim's skin. After putting the bite on an animal, the vampire bat laps up the flowing blood with its tongue. Its saliva prevents the blood from clotting.

Young vampire bats feed not on blood but on milk. They cling tightly to their mothers, even in flight, and consume nothing but her milk for about three months.

The common vampire bat is found in the tropics of Mexico, Central America, and South America.

Hope it helps!

4 0
3 years ago
Rank from the first to the last steps to describe the correct order of events of erythrocyte death.
timama [110]

Answer:

1. erythrocyte becomes trapped in the sinusoids of spleen.

2. Spleen macrophages digest the erythrocytes.

3. Hemoglobin is broken down into amino acids, iron and bilirubin.

4. Iron ions and amino acids are recycled to make new hemoglobin in red bone marrow. Bilirubin is sent to liver for excretion.

Explanation

Aging erythrocytes are trapped in the sinusoids of the spleen, where they are digested by macrophages. Within the macrophage, hemoglobin is broken down into amino acids, iron ions, and bilirubin.

Iron ions or heme ion and amino acids then move through the blood to the bone marrow, where they are recycled and used to create new hemoglobin. Bilirubin travels with the help of the blood to the liver, where it is modified and then excreted.

thus, the correct order is :

1. erythrocyte becomesrapped in the sinusoids of spleen.

2. Spleen macrophages digest the erythrocytes.

3. Hemoglobin is broken down into amino acids, iron and bilirubin.

4. Iron ions and amino acids are recycled to make new hemoglobin in red bone marrow. Bilirubin is sent to liver for excretion.

8 0
4 years ago
Distinguish between growth and development​
Makovka662 [10]

Answer:

Growth is change of physical aspects of the organism. Development is overall changes and progressive changes of the organism.

Explanation:

6 0
3 years ago
Read 2 more answers
Solar power and wind power are similar because
Neporo4naja [7]
They are both renewable resources 
5 0
3 years ago
You've been growing numerous plants in a greenhouse in dishes called flats. Different flats have different number of plant speci
KATRIN_1 [288]
I think the correct answer would be C. It would be restricting water and/or nutrients, instead of supplying ample quantities of both that would not change the results of the experiment. This is because you are still supplying the same amount of nutrients and other things needed by the plant so the ratio of the growth of the plants will still be the same.
6 0
3 years ago
Other questions:
  • When the sun's disk is covered in an eclipse the corona is still visible?
    10·1 answer
  • You are attempting to re-create the mouse/human hybrid cell fusion experiment described in your screencasts. You believe you are
    12·1 answer
  • If the sum of 3 times a number and 2 times a number is 60, find the number
    14·1 answer
  • John and Jane Jones’ newborn baby girl, Leah, has just been diagnosed with galactosemia. Prior to their genetic counseling appoi
    9·2 answers
  • 1. When inspecting a heating system, you should always A. try to operate the system regardless of the conditions. B. open readil
    14·2 answers
  • Molecules helped by protein; move insoluble molecules across plasma membrane:
    5·1 answer
  • Indicate whether each of the following descriptions is true of microtubules (MT), microfilaments (MF), intermediate filaments (I
    12·1 answer
  • Need help now I am doing a quiz
    8·1 answer
  • The process where water vapor changes to liquid water droplets
    13·2 answers
  • A person who has very toned muscles likely has.... A.extra nerve cells. B. lots of digestive enzymes. C.tightly packed myofibril
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!