what is blood?

Answer 1

What is Blood?
Blood is made of four components:
Plasma is a mixture of water, sugar, fat, protein, and potassium and calcium salts. It also contains many chemicals that help form blood the clots necessary to stop bleeding. More than 92% of plasma is water.

Red blood cells contain a special protein called hemoglobin, which carries the oxygen we inhale with our lungs to all of the parts of our bodies. It then returns carbon dioxide from our body to our lungs so we can exhale it. Hemoglobin is also responsible for making red blood cells red. We have so many red blood cells that our blood itself appears red, even though it contains more than red blood cells.

White blood cells are clear round cells that are bigger than red blood cells. White blood cells produce proteins called antibodies that help our bodies fight infections caused by bacteria, viruses, and foreign proteins.

Platelets aren't really cells at all; they are just fragments of cells. When we are injured, platelets gather at the site of the injury and

Answer 2

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Answer 3

Blood is thicker than water and has a little bit salty taste. In an adults body there is 10.6 pints of blood circulating around. In their blood there is billions of living blood cells floating in a liquid called plasma. If you took a small sample of this blood and poured it into a test tube and then put it in a machine called a centrifuge, you would be able to see the layers of this blood. This machine spins the blood around so fast that it separates the red blood cells, from the white blood cells, from the platelets. The red blood cells sink to the bottom because they are the heavier, more solid parts, but the plasma remains at the top because it is lighter. The plasma is 95% water and the other 5% is made up of dissolved substances including salts.

Answer 4

Blood is a specialized biological fluid consisting of red blood cells (also called RBCs or erythrocytes), white blood cells (also called leukocytes) and platelets (also called thrombocytes) suspended in a complex fluid medium known as blood plasma. Blood plasma is the liquid component of blood, in which the blood cells are suspended. It makes up about 55% of total blood volume.

It's also what vampires feed on :-)

Answer 5

Blood is a culmination of plasma, a fluid in which blood moves through, white blood cells, which kill off anything perceived as "bad: by your bodies immune system, and red blood cells which use hemoglobin to transfer oxygen around your body.

Answer 6

Are you serious? :) lol It's something that runs through your body! lol Naw, just kidding.\

Blood - a fluid that circulates in the principal vascular system of human beings and other vertebrates, in humans consisting of plasma in which the red blood cells, white blood cells, and platelets are suspended.

There's white blood cells and Red blood cells. Blood is blue before it is esposed to air, because there is no oxygen in it. As soon as it gets oxygen, it turns red. White blood cells fight off viruses, and trys to keep you healthy.

Answer 7

The circulatory fluid in most animal life on Earth that carries oxygen and other nutrients to the cells, and removes waste products from the cells for elimination from the body.

Answer 8

What is Blood?
Blood is made of four components:

Plasma is a mixture of water, sugar, fat, protein, and potassium and calcium salts. It also contains many chemicals that help form blood the clots necessary to stop bleeding. More than 92% of plasma is water.

Red blood cells contain a special protein called hemoglobin, which carries the oxygen we inhale with our lungs to all of the parts of our bodies. It then returns carbon dioxide from our body to our lungs so we can exhale it. Hemoglobin is also responsible for making red blood cells red. We have so many red blood cells that our blood itself appears red, even though it contains more than red blood cells.

White blood cells are clear round cells that are bigger than red blood cells. White blood cells produce proteins called antibodies that help our bodies fight infections caused by bacteria, viruses, and foreign proteins.

Platelets aren't really cells at all; they are just fragments of cells. When we are injured, platelets gather at the site of the injury and stick to the edges of the wound. They release chemicals that help start the process of blood clotting so that bleeding will stop.

Just about everyone knows that we can't live without blood. And that the blood in our bodies is pumped by the heart through a network of arteries and veins. But beyond those blood basics, what do you know about that red stuff beneath your skin?

Blood is essential for good health because the body depends on a steady supply of fuel and oxygen to reach its billions of cells. Even the heart couldn't survive without blood flowing through the vessels that bring nourishment to its muscular walls. Blood also carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system; from there they are removed from the body.

Without blood, we couldn't keep warm or cool off, we couldn't fight infections, and we couldn't get rid of our own waste products.

So how exactly does blood do these things? How is it made, and what's in it? How does blood clot? It's time to learn a little about the mysterious, life-sustaining fluid called blood.

What Is Blood and What Does It Do?
Two types of blood vessels carry blood throughout our bodies: The arteries carry oxygenated blood (blood that has received oxygen from the lungs) from the heart to the rest of the body. The blood then travels through the veins back to the heart and lungs, where it receives more oxygen. As the heart beats, you can feel blood traveling through the body at your pulse points — like the neck and the wrist — where large, blood-filled arteries run close to the surface of the skin.

The blood that flows through this network of veins and arteries is called whole blood. Whole blood contains three types of blood cells:

red blood cells
white blood cells
platelets
These blood cells are mostly manufactured in the bone marrow (the soft tissue inside our bones), especially in the bone marrow of the vertebrae (the bones that make up the spine), ribs, pelvis, skull, and sternum (breastbone). These cells travel through the circulatory system suspended in a yellowish fluid called plasma (pronounced: plaz-muh). Plasma is 90% water and contains nutrients, proteins, hormones, and waste products. Whole blood is a mixture of blood cells and plasma.

Answer 9

the answers you have before me are correct in the fiscal sense, but God says life is in the blood and Abel's blood called to him. there's always more than whats on the surface!

Answer 10

it mainly consists of plasma (dissolved food) and both red and white blood cells