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]
4 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]4 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
What type of carbon cycling occurs when plants take in carbon dioxide from the atmosphere to make food and plants, and animals r
liberstina [14]

Answer:

short-term carbon cycling

Explanation:

my answer points to the idea that it takes a shorter amount of time for the process to occur

7 0
3 years ago
What is competition between different species called
Troyanec [42]

Answer:

Competition between individuals of different species is known as interspecific competition.

8 0
4 years ago
Why might a spring flow out of the ground in a wet region?
Illusion [34]
Because a spring is from where the water table is too high
4 0
3 years ago
One of the main characteristics of the population is its?
konstantin123 [22]

Answer:

population size, population density, when scientists population spacing and age structure

Explanation:

because because four characteristics is defined a population and i kind of just know.

6 0
3 years ago
If a cell keeps growing, why must it eventually divide
iragen [17]

Answer:

What are two reasons why cells divide rather than continue to grow indefinitely? a) The larger a cell becomes the more demand the cell places onto its DNA. b) The larger a cell becomes , the more trouble the cell has moving nutrients and wastes across the cell membrane.

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • What does a cognitive neuroscientist study?
    8·1 answer
  • Which molecule brings amino acids to the ribosomes during protein synthesis?
    13·1 answer
  • A rock sample has a mass of 16 grams and a volume of 8 cubic centimeters. When the rock is cut in half, what is the volume and d
    15·1 answer
  • When a male pig from a line of true-breeding (homozygous) black, solid-hooved pigs was crossed to a female from
    7·1 answer
  • What would be the result of a collision between continental plates in which one plate is forced down toward the heat of the mant
    11·1 answer
  • When watering her plants, Stela adds enough water to the soil to completely wet it. How will this help in plant growth?
    11·1 answer
  • What was Dr. Kearns original problem?
    10·1 answer
  • The process of plants turning light and carbon dioxide in sucrose and glucose is called:
    13·2 answers
  • Which is an application of DNA technology in medicine?
    11·1 answer
  • Which description identifies a solid?. Single choice.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!