Blood Notes Flashcards
(20 cards)
Blood transports? (function)
- gases, nutrients, waste products
- processed molecules
- regulatory molecules
Functions of blood?
- Regulation of pH and osmosis
- maintenance of body temp.
- protection against foreign substances
- clot formation
2 major components of blood
- liquid plasma (55%)
- formed elements (45%)
Erthyrocytes
- red blood cells (RBC)
Leukocytes
-white blood cells (WBC)
Platelets
- fragments or megakaryocytes in marrow
Blood Plasma Components
- 90-92% water
- 2-6% proteins
- Albumins
- Globulins
- Fibrinogen
ALbumins
maintains osmotic pressure of blood
Fibrinogen
- a clotting protein
Erythrocytes Functions
- dedicated to respiratory gas transport
- hemoglobin binds with oxygen
Composition of Hemoglobin
4 globin molecules: transport carbon dioxide
4 heme molecules: transport oxygen (iron required)
Erythrocytes Life span
100-120 days
3-4 moths
Leukocytes Functions
-protects body against mircroorganism and removes dead cell and debris.
Types of Leukocytes
- neutrophils
- eosinophils
- basophils
- lymphocytes
- monocytes
neutrophils
most common, phagocyte cells destroy bacteria (60%)
Eosinophils
- detoxify chemicals, reduce inflammation (4%)
Basophils
- allergic reaction
Lymphocytes
- immunity
Monocytes
- become macrophages
Platelets Function
-clotting mechanism that plugs and helps seal breaks in blood cells.