COMPOSITION AND FUNCTION OF THE BLOOD
FUNCTIONS:
1. Transports oxygen and nutrients to cells
2. Removes carbon dioxide and wastes from cells
3. Immunity (protects from disease)
4. Temperature regulation (cold, constricts; hot, dilates)
5. Helps prevent loss of blood by clotting
6. Transports hormones
7. Erection of the ***
COMPONENTS OF CIRCULATORY SYSTEM
1. Blood
2. Heart
3. Blood vessels (arteries, capillaries, veins)
4. Lymph and lymph vessels
1. BLOOD
Blood is not an epithelial tissue, and it’s not loose or dense connective tissue; it’s classified as a “special connective tissue”. You have about 5 liters of blood, but that is only half of the body fluid. The other half includes fluid around each cell, and joint fluids, etc.
Blood consists of the following:
A. Plasma
B. Red blood cells
D. Platelets
A. PLASMA
Plasma is what the blood cells float around in. If you spin a blood sample in a test tube, the red blood cells sink to the bottom, and you’ll see the yellow plasma on top. Some people who need blood just need the packed RBCs, others need the plasma, and some need whole blood,- منشئ مقرر دراسي: Ali Najum