The circulatory system of amniotes, which include reptiles, birds, and mammals, is a closed circulatory system that consists of a heart, blood vessels, and blood.
1. Heart: The heart of amniotes is usually divided into four chambers, including two atria and two ventricles. The left side of the heart pumps oxygen-rich blood to the body, while the right side pumps oxygen-poor blood to the lungs or respiratory surfaces.
2. Blood vessels: Amniotes have a system of blood vessels that distribute blood throughout the body. Arteries carry oxygenated blood away from the heart, while veins carry deoxygenated blood back to the heart. Smaller blood vessels called capillaries connect arteries and veins, allowing for the exchange of oxygen, nutrients, and waste products between the blood and tissues.
3. Blood: The blood in amniotes is composed of red and white blood cells, platelets, and plasma. Red blood cells carry oxygen to the body tissues and remove carbon dioxide, while white blood cells are involved in immune responses. Platelets help in blood clotting to prevent excessive bleeding. Plasma is a fluid component of blood that transports nutrients, hormones, and waste products.
The circulatory system plays a crucial role in amniotes' physiological functions, such as delivering oxygen to tissues, removing metabolic waste, regulating body temperature, and facilitating immune responses. It also aids in the transport of hormones, nutrients, and other essential substances throughout the body.
circulatory system of amniotes
1 answer
1 answer