Small secondary lymphoid organs, which cluster along lymphatic vessels, are termed ________.

1 answer:

3 0

Lymph nodes. They comprise the lymphatic system that connects to the blood circulatory system. They are significant in the immune system. At the lymph nodes, foreign bodies in the lymph, such as pathogens, are filtered and trapped in lymph nodes where they are later destroyed by lymphocytes.

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Compare the thickness of the right and left ventricles. Which ventricle is thicker the right or left. Explain the difference.

zepelin [54]

Answer:

When comparing the thickness of the heart's ventricles, the left one is thicker than the right one, because it must generate more pressure to pump blood throughout the body.

Explanation:

In the human heart, the right ventricle is in charge of pumping the blood to the lungs —initiating the minor circuit of the circulation— while the left ventricle is in charge of pumping the blood to the whole body.

To fulfill its function, each ventricle has a specific thickness in its walls, the left one being thicker than the right one.

The right ventricle is a chamber that handles more volume than pressure, and its walls are thinner because it does not require much pressure to pump the blood to the lungs.
The left ventricle has a thicker muscular wall because it is a chamber that must generate a high pumping pressure, so its contraction force must be greater.

The structure of the myocardium in the heart is what allows each chamber to fulfill its function adequately.

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C)Bones Surround And Protect The Lungs

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Write a summary of the pathways rocks can take to become sedimentary, igneous, and metamorphic rocks.

Anna71 [15]

Answer:

When a certain type of rock, specifically, an igneous rock, is deeper into the ground, and it is under the influence of high temperatures and pressures, it will start to change its molecular structure over time. In addition to the high temperature and pressure, chemical influences are also very important, so the the rock will gradually turn into a metamorphic rock.

Depending on the type of influences, and their intensity as well, one type of rock can evolve into multiple different types of metamorphic rocks.

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In what ways do enzymes control the cell cycle?

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they affect the rate of cycling

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Which of the following enzymes listed below are responsible for cancer cells ability to prevent aging of the cells and contribut

umka2103 [35]

Answer:

Telomerase

Explanation:

Repetitive regions at the ends of Chromosomes are known as telomeres and these are crucial for chromosomal stability. There is no gene present and they provide protection to internal parts of chromosome. The telomeres are eaten up slowly by ‘DNA REPAIR MECHANISM’ after many division cycles, which is considered as ageing. That why, a cell can divide only certain number of times.

Some cells have ability to express an enzyme telomerase that maintain the length of telomere. The telomerase enzyme contributes to cell immortality by rebuilding the damaged telomere. Thus telomerase enzyme is necessary for cancer initiation and survival of tumor. Telomerase enzyme can make its own DNA by using its RNA as template . It extends the overhang strands of DNA by using a comlementary DNA.

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