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
tiny-mole [99]
2 years ago
11

Which of the following prevents blood from flowing backward through the circulatory system?

Biology
1 answer:
netineya [11]2 years ago
6 0

Answer: Valves in the veins

Explanation: The flow of the blood inside the body takes place through the veins and arteries. The oxygenated blood from the heart is supplied to the different parts of the body.

The blood flows from the capillaries to the venules and from there to the veins. The blood moves in the veins by the rhythmic movement of the smooth muscles in the body.

Most of the blood moves against the gravity so there is a chance that it can backflow so to prevent this there are valves in the veins known as one way valves.

You might be interested in
choose the animal belonging to pisces group: silver fish, sea horse,dolphin, lobster. answer asap! thx​
mihalych1998 [28]

Answer:

The correct answer is

Explanation:

Lobster is the answer. People eat lobster in pieces which we call as lobster piece.

Hope this helps....

Have a nice day!!!!

8 0
3 years ago
Choose the law that BEST explains the example:
german

Answer:

3rd law

Explanation:

First law of Newtons :

 Newton's First Law states that, unless an external force acts on it, an object will remain in a straight line in rest or uniform motion.  

The second law of Newtons :

The second law states that an object's acceleration depends on two variables-the net force that acts on the object and the object's mass.

The change in the linear momentum of the object is equal to the force.

Third law of Newtons :

This law states that every action has its reaction with the same magnitude but in the opposite direction.

When we push the wall , then the wall does not move because the wall is fixed but we skid opposite to the direction of applied force because wall offers an opposite force on our body.

Therefore the answer is "third law".

5 0
3 years ago
Read 2 more answers
Male body cells only have one X chromosome, while females have two X chromosomes. It is hypothesized that if both X chromosomes
Dmitry [639]

C X-inactivation "switches off" one of the X chromosomes.

Explanation:

3 0
3 years ago
PLEAE HELP!!! WILL GIVE BRAIN!!!! Make my Christmas!
lidiya [134]

Explanation: Sudden Increase Factors:

- Since there are no predators, there are no ways they could be eaten, with this case, it significantly increases the population.

- Since there are a lot of females, and some males, the males could find mates, and have some baby reindeer, which also increase the population.

Sudden Decrease Factors:

- One decreasing factor is starvation. With there being so many reindeers, all the food is going away quickly. After a few years after the growth spurt, most of them probably died because of there not being a lot of food.

- Another decreasing factor is Old Age. Since there are 21 females, they are older than the babies, and they couldn't have lived much longer, and probably died.

- Another factor; sickness. With there being starvation, their immune system is degrading, and meaning sicknesses could come, so maybe a huge sickness // disease came, and wiped out quite a bit of the population.

<em>I really hoped this helped. :)</em>

5 0
2 years ago
What are two structural parts of the virus?
Salsk061 [2.6K]
All viruses<span> contain the following </span>two components<span>: 1) a nucleic acid genome and 2) a protein capsid that covers the genome. Together this is called the nucleocapsid.</span>
8 0
3 years ago
Other questions:
  • PLEASE HELP 15 POINTS!!!
    9·2 answers
  • In assessing a stroke patient, you ask her to stick out (protract) her tongue. you note that it deviates to one side. you suspec
    9·1 answer
  • What activity led to the formation of Grand Canyon
    12·1 answer
  • What division of ANS increase digestive activity?
    10·1 answer
  • In crassulacean acid metabolism (CAM) plants 84) A) malate is stored in large vacuoles. B) the amount of carbon assimilated for
    8·1 answer
  • Based on this picture, how do you think a DNA molecule makes a copy of itself?
    12·1 answer
  • A hurricane hits a coastal prairie and destroys the habitat. Years later, there is an appearance of small plants with rapidly sp
    8·2 answers
  • What do plants make through the process of photosynthesis
    15·2 answers
  • Why is predation not a symbiotic relationship?
    13·1 answer
  • The substance which take part in a chemical reaction are called
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!