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
Citrus2011 [14]
3 years ago
13

Identify the structure of the human heart which is a valve that closes during each heartbeat to prevent blood from flowing back

into the right ventricle from the pulmonary trunk.
Biology
1 answer:
Scilla [17]3 years ago
5 0

The answer is pulmonary

valve. The pulmonary valve is found between the right ventricle and the pulmonary artery. The valve is a semi-lunar valve that opens when the pressure in the right ventricle is higher than that in the pulmonary artery (because the ventricle is filled with blood). When the ventricle pumps blood into the pulmonary artery, the pressure in the artery rises while that in the ventricle lowers. This closes the pulmonary valve preventing the backflow of blood into the right ventricle. Pulmonary artery takes blood to the lungs for oxygenation.

You might be interested in
Whats the structure of pons
forsale [732]

Answer:

A pons structure is a bulbous shape and has two main components - the basis pontis (aka basal/ventral part) and the pontine tegmentum (aka dorsal part). In Psychology the pons is the structure of the brain the acts like the "bridge"(Latin )  for the midbrain and medulla.

Explanation:

Hope that helps

5 0
2 years ago
What forces the magma beneath to move?​
goblinko [34]

Answer:

pressure

Explanation:

the earth's tectonic plates create pressure to make the magma rise

6 0
3 years ago
The body determines whether certain genes should be expressed or not. Sometimes genes are only turned on once or twice in a life
zmey [24]

The gene which is produced once or twice in a lifetime is the milk producing hormone after childbirth. This is because it is produced only after the birth of the child. The growth of the mammary glands takes place during pregnancy. The breast continue to increase in size after giving birth to a child. After delivery only copious milk is produced which is generally done with the help of milk hormone. During pregnancy the secretion of the milk is inhibited by the estrogen and progesterone which circulates in the blood stream which in turn inhibits the release of prolactin from the pituitary gland thus making the mammary glands unresponsive. Where as insulin is a hormone which helps the body to utilise the sugar or glucose from different sources like carbohydrates that we get while we eat food and adrenaline is secreted when we are scared or when we feel that we are in danger. Therefore, milk producing hormone is the gene that are turned once or twice in a lifetime.

8 0
2 years ago
Read 2 more answers
"Ancient Greek Myths for Kids: The Story of King Midas and the Golden Touch - Ancient Greek Myth for Kids" https://greece.mrdonn
shtirl [24]

Answer:

..........................

3 0
3 years ago
Read 2 more answers
When chemical communication at a synapse is terminated by the recapture of neurotransmitter molecules by the presynaptic neuron,
velikii [3]
<h2>ANSWER</h2>

When chemical communication at a synapse is terminated by the recapture of neurotransmitter molecules by the presynaptic neuron, we refer to the process as <u>Reuptake.</u>

<h3>#CarryOnLearning</h3>
7 0
2 years ago
Other questions:
  • The bonds in molecules of monosccharides store
    5·1 answer
  • The main difference between deserts and steppes is the
    11·2 answers
  • Why does enzyme activity plateau as substrate<br>concentration increases?​
    9·2 answers
  • It is never a good idea to water house plants with salty water. The plants would most likely die depending on how much of the so
    7·2 answers
  • How does the Doppler effect change the appearance of emitted light?
    9·1 answer
  • ______ is a push or pull that one object exerts on another.
    11·2 answers
  • Can you guys pls help
    5·1 answer
  • How does a competition between animals help create a healthy forest?
    9·1 answer
  • How do you think the sequence of amino acids in an enzyme relates to its ability to bind to a specific target molecule?
    6·2 answers
  • Analyse the impact of these electronic media,such as social networks on individual under positive impact (5)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!