As you know from getting cut, blood is a fluid. Almost 55% …
As you know from getting cut, blood is a fluid. Almost 55% of the total volume of blood is made up of a liquid called "plasma." Plasma consists mainly of water.
Thin-walled blood vessels called capillaries are so small that blood vessels flow …
Thin-walled blood vessels called capillaries are so small that blood vessels flow through them in single file. Gases, nutrients, and wastes are exchanged through the thin walls of capillaries.
Thin-walled blood vessels called "capillaries" are so small that blood cells flow …
Thin-walled blood vessels called "capillaries" are so small that blood cells flow through them in single file. Gases, nutrients, and wastes are exchanged through the thin walls of capillaries. Capillaries form branches that connect to arteries and veins.
From the left ventricle, oxygen-rich blood enters the largest artery in the …
From the left ventricle, oxygen-rich blood enters the largest artery in the body, the aorta. Arteries stemming off the aorta carry oxygen-rich blood to all parts of the body.
The heart is made up of four main chambers or hollow compartments. …
The heart is made up of four main chambers or hollow compartments. The septum, a thick wall of tissue, separates the hearts' right side and left side. Right and left is referred to as if the heart were in your own body.
Platelets consist of cell fragments that play a key role in blood …
Platelets consist of cell fragments that play a key role in blood clotting. Through a series of reactions, platelets help weave a net across a cut or injury. Without clotting, you'd bleed to death.
If you place your fingers on the underside of your wrist, you …
If you place your fingers on the underside of your wrist, you can feel blood pulsing in an artery. Veins, another type of blood vessel, return oxygen-depleted blood to the heart.
The interior layers of a leaf: palisade layer, spongy mesophyll, which allows …
The interior layers of a leaf: palisade layer, spongy mesophyll, which allows oxygen, carbon dioxide, and water vapor to exchange between cells and the atmosphere; and stomata, through which gases enter and exit the leaf.
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