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
zubka84 [21]
3 years ago
15

The proper function of the cardiovascular system relies on blood following the correct pathway through the heart. Valves within

the heart separate the organ's chambers and prevent blood from flowing in the wrong direction. What valve separates the left atrium and left ventricle?
Biology
1 answer:
Nadya [2.5K]3 years ago
3 0

Answer:

The Mitral/Bicuspid Valve

Explanation:

The heart is composed of 4 chambers: left and right atria, and left and right ventricles. The “right heart” (right atrium and ventricle) receives deoxygenated blood from the systemic circulation through the Vena Cava, and impels this blood towards the lungs through the Pulmonary Arteries where it will be oxygenated. The “left heart” (left atrium and left ventricle) receives oxygenated blood from the pulmonary circulation through the Pulmonary veins and impels this blood towards the systemic circulation through the Aorta artery.

The systemic and pulmonary circuits work in series, and maintaining the unidirectional course of the blood flow is very important. This can be done by the presence of fibrous valves that are present between the atrium and the ventricles, and in between the ventricles and the Pulmonary/Aorta artery.

The location of these structures are as follows:

Systemic circulation ⇒ Right Atrium → [Tricuspid Valve] → Right Ventricle → [Pulmonary Valve] → Pulmonary Artery ⇒ Pulmonary circulation

Pulmonary circulation ⇒ Left Atrium → [Mitral/Bicuspid Valve] → Left Ventricle → [Aortic Valve] → Aorta ⇒ Systemic circulation

You might be interested in
Milk has a pH of 6. Tomato juice has a pH of 4. Therefore, tomato juice is:
tatiyna
B) 100 times more acidic :)
8 0
3 years ago
HELP ASAP
Anastasy [175]

Answer:

B

Explanation:

Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, t

8 0
3 years ago
Read 2 more answers
Suppose a dye for staining cells stains the region where ribosomes are made. what would you expect to see inside the stained cel
ella [17]

The RNA (ribonucleic acid) and the associated proteins forms the ribosomes. These ribosomes are the site of protein synthesis in a cell. Inside the stained cell nucleus, the nucleolus part of the cell can be seen. The nucleolus is the part where the all the ribosomes of the cell are assembled.

Hence, the answer is 'nucleolus'.

5 0
3 years ago
What is a Cell wall?
MatroZZZ [7]
Cell wall is the outer permeable covering in all pants and almost all prokaryotes ! cell wall are mainly made up of cellulose , sometime by chitin!!
8 0
3 years ago
1. List 2 interactions between the earth spheres and the water cycle.
Harrizon [31]

Answer:

The carbon cycle, as the nitrogen cycle, occurs in all the spheres: Biosphere, Atmosphere, Geosphere and Hydrosphere.

Explanation:

Most Earth events involve interaction between multiple spheres. For example, rain is the movement of water (the hydrosphere) from the atmosphere to the lithosphere where it collects in lakes, rivers, or streams. Water is an important resource for inhabitants of the biosphere.

The Atmosphere-contains all the air in Earth's system. The upper portion of the atmosphere protects the organisms of the biosphere from the sun's ultraviolet radiation. It also absorbs and emits heat. This sphere is also where weather occurs.

The nitrogen cycle occurs in all the spheres and ecosystems. It passes through rocks, water, atmosphere, plants, etc.

In atmosphere and biosphere: Nitrogen is about 78% of the gases in the atmosphere an it’s a essential component of the living organisms. It enters plants through the microorganisms that convert this nitrogen into ammonia. After this conversion, the plants absorb this substance. It can pass to animals when they eat these plants. Then, when they urinate, bacteria convert ammonia to nitrogen again and it returns to the atmosphere.

Sources:

https://earthsphereslife.wordpress.com/2020/03/31/nitrogen-cycle/https://earthsphereslife.wordpress.com/2020/04/01/carbon-cycle-in-all-the-spheres/

4 0
2 years ago
Other questions:
  • What was miss Evers initial reason for participating in the study ? "Miss Evers' Boys"
    12·2 answers
  • How do animal-like protists differ from plant-like protists?
    13·1 answer
  • When patients who are receiving glucocorticoid therapy (for example, with prednisone) need to stop taking it, the doctor will pr
    11·1 answer
  • How did the occurrences of the different traits change over the 30-year period? Use evidence from the graph to support your answ
    12·2 answers
  • Which step of mitosis involves the nucleus splitting and nuclear membranes forming around each new nucleus?
    11·2 answers
  • 2. What do geologists mean when they refer to the “grains" that make<br> up a rock?
    12·1 answer
  • Someone please me please help meeee!!! It’s due at 2 please help me
    7·1 answer
  • How are the transmission, prevention, and treatment of infectious diseases similar to and different from these processes in othe
    12·1 answer
  • If a mRNA codon has ACU on it, the matching tRNA anticodon would have
    15·1 answer
  • What is important in Hubble's discovery about the red shift in the spectra of galaxies? a. It proves the Big Bang theory. b. It
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!