Topic 10 Immune System: Review of Blood

Question 1

• Blood is a type of connective tissue, and centrifuging it results in three parts: plasma, buffy coat (WBC’s), and RBC’s. The percentage of blood by volume of RBC’s is referred to as the hematocrit level and is higher in men. Plasma contains matrix (liquid portion) of blood, and includes water, ions, urea, ammonia, and proteins. The important plasma proteins are:

Answer 1

Note

Question 2

• Transport fatty acids and steroids, help regulate osmotic pressure, and the most abundant

Answer 2

1. Albumins

Question 3

• Will be discussed later

Answer 3

2. Immunoglobulins

Question 4

• Help control bleeding

Answer 4

3. Clotting Factors

Question 5

• The plasma, minus fibrinogen, results in serum, and most plasma proteins are formed in the liver, although gamma globulin that make antibodies are formed in lymph tissue. Plasma proteins act as a source of amino acids for tissue protein replacement.
• All blood cells arise from stem cell precursors in bone marrow; erythrocytes lose their nucleus while still there, and then exit to blood and lose the rest of their organelles soon after

Answer 5

Note