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melamori03 [73]
3 years ago
5

The first answer will be marked as the brainliest...

Biology
1 answer:
Natali5045456 [20]3 years ago
4 0

Explanation:

the heart’s contraction cycle follows a dual pattern of circulation—the pulmonary (lungs)and systemic (body) circuits—because of the pairs of chambers that pump blood into the circulation. In order to develop a more precise understanding of cardiac function, it is first necessary to explore the internal anatomical structures in more detail.

The word septum is derived from the Latin for “something that encloses;” in this case, a septum (plural = septa) refers to a wall or partition that divides the heart into chambers.

Valves of the Heart: the septum between the atria and ventricles is known as the atrioventricular septum. It is marked by the presence of four openings that allow blood to move from the atria into the ventricles and from the ventricles into the pulmonary trunk and aorta. Located in each of these openings between the atria and ventricles is a valve, a specialized structure that ensures one-way flow of blood. The valves between the atria and ventricles are known generically as the tricuspid (right side)and the bicuspid (left side) valve. The valves at the openings that lead to the pulmonary trunk and aorta are known generically as the pulmonary and the aortic valve.

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Lapatulllka [165]

Answer:

In an eco-system, all animals and insects are important. Since there is no picture, I'll descibe what would happen. If a keystone species went missing or extinct, shortly after the rest of the ecosystem will callapse. The bird population would decrease because lack of food, shelter or environment, then those who feed on birds will slowly decline, then worms or insects that the bird was keeping in check, overpopulate. This can have disaterous consequences, not only for this specific ecosystem but for any.

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Drag each label to the correct location on the map identify each type of front
scoundrel [369]

Answer: The type of front in the box within the image is given below-

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ZanzabumX [31]
Competitive exclusion?
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Thylakoids are the site of the light-dependent reactions of photosynthesis. Thylakoids<span> consist of a </span>thylakoid <span>membrane surrounding a </span>thylakoid<span> lumen. They normally stack up in stacks called Granum and the Stroma surrounds</span>
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