Correct answer is The horse started out the size of a small dog and evolved to the larger modern horse.
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The right atrium receives blood returning from others parts of the body through the superior vena cava and the inferior vena cava.
Explanation:
The pathway of circulation begins in the right atrium which receives the carbon dioxide-rich deoxygenated blood returning through the systemic circulation.
The deoxygenated blood from regions superior to the heart, i.e., the head, neck, shoulder areas are collected through the superior vena cava and that from the parts inferior or lower to the heart like visceral organs, extremities, trunk, hip etc are brought through the inferior vena cava.
Both these venous systems (superior and inferior) fill the right atrium.
The right atrium then pumps the deoxygenated blood to the right ventricle via the tricuspid valve.
The right atrium is filled with blood during diastole.
Insulin is a hormone produced by the pancreas. It is very important when it comes to metabolism of carbohydrates, fats, and protein because it helps absorb glucose from the blood into fat, liver, and skeletal muscle cells.
Answer: Yes they are highly venomous
Explanation:
Mushrooms, algae, and and us humans.
