Composition of blood Blood transports materials through out the body inside blood vessels.

Plasma Straw colored, nonliving part of blood. 90% Water Helps to regulate body temperature Contains Electrolytes Plasma transports blood cells, products of digestion and hormones throughout the body.

How much blood is in the human body? About 5 liters

Erythrocytes Shaped like round plates indented in the center. Have no nucleus

Questions The Average adult has about __________ liters of blood? 5 Describe Plasma? Plasma is the straw colored, non-living part of blood. It is 90% water. Name 2 materials carried by plasma? RBC, Hormones, Digested materials.

Why is blood red? Blood is red because it contains hemoglobin and iron rich pigment.

What does hemoglobin do Hemoglobin picks up the oxygen molecules and drops off CO2

Questions Why is blood red? Because it contains hemoglobin What does hemoglobin do? Hemoglobin carries oxygen What is the shape of a red blood cell? How does carbon monoxide poisoning occur?

White Blood Cells Fight infections Large in size Have a nucleus Phagocyte

Platelets Smallest part of blood No nucleus Live 2-4 days Involved in clotting of blood

Bone marrow Makes the cells of the blood

Bone marrow is located inside certain long bones.

What do platelets do? Platelets clot the blood What is the smallest component of blood? The platelets What do white blood cells do? Fight infections How are red blood cells made? By the bone marrow