Briefly outline the progressive evolution of the respiratory and circulatory systems in vertebrates

Biology

1 answer:

nikitadnepr [17]3 years ago

4 0

Answer:

The circulatory system has evolved over time from simple diffusion through cells, in the early evolution of animals, to a complex network of blood vessels that reach all parts of the human body. Made of specialized and unique cardiac muscle, it pumps blood throughout the body and to the heart itself.

Claps shut at birth. Evolutionary changes in the vertebrate heart are tied to change from single to double-circuit heart, with increased separation of oxygenated and deoxygenated blood, allowing more efficient respiration and circulation to fuel high activity and increased oxygen demands associated with endothermy.

You might be interested in

Believe it or not, the tundra is like the desert in one very important way. The similarity results in plants with a like adaptat

Minchanka [31]

<span>The tundra and the desert are very similar in one important way. Each of these biomes has low rainfall and available water, this results in plants in each environment that have adapted in similar ways. It causes these plants to have a waxy coating on the leaves which aids in preventing them from drying out.</span>

5 0

3 years ago

Observations:

nevsk [136]

Answer:

In this photo, one can observe the big mountains, the clear blue sky, the sand which covers the ground, the path down the middle and the variety of dry, green plants.

Explanation:

4 0

3 years ago

What two gasses probably dominated Precambrian Earth's atmosphere

masha68 [24]

Nitrogen and Oxygen

4 0

3 years ago

Why do we wear white or light coloured clothes in summer?

kenny6666 [7]

Answer:

Why do we wear white or light coloured clothes in summer?

We wear white or light coloured clothes in summer because white coloured clothes reflect most of the sun's heat and absorb very little of the sun's heat and keeps our body cool.

Why do we wear black or dark coloured clothes in winter?