Unit 6 Lt 1 Flashcards
functions of blood
- transportation of oxygen, nutrients, waste products
- Regulation of ph, temp, and content
-protextion with clotting and immunity
Blood characteristics
- connective tissue
- 100 f
- 7.3-7.4 ph
- more in males than females
- 8% of body weight
Components
More plasma than cells
Plasma
Fluid containing water, electrolytes, proteins, and substances
Blood cell formation
Hematopoesis
Erythrocytes
Function- transportation of oxygen and carbon dioxide
- no nucleus
- no oranelles
120 days and are broken down in spleen and liver
Where do blood cells come from
hemocytoblasts located in red bone marrow
Hemoglobin
A protein pigment found on the plasma membrane of erythrocytes
- contains iron atoms that bind with oxygen atoms
Hematocrit
measurement of the % of erythrocytes in the blood
Thrombocytes
Function - blood clotting during injury
- no nuclues
- irregular shape
live up to 5-9 days until broken down by spleen
Leukocytes
Function - fight infections in the body
- have nuclei
- classified by presence of granules
- vary life span
Antigen
A plasma membrane protein signals production of antibodies
Antibody
Proteins in the blood that are used by the immune system to identify and destroy foreign objects
Blood type A
type A antigen, B antibodies
Donate to - A, AB
Recieve from - A, O
Blood type B
Type B antigen, Type A antibodies
Donate to - B, AB
Recieve from - B, O