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1.3 Blood
Topic 1.3 Blood (Science 30)
| Question | Answer |
|---|---|
| Plasma | conssits of water, dissolved gases, proteins, sugars, vitamins, minerals, hormons and waste products. |
| Function of Blood | -Preserve slight alkalinity (basic pH) of our body tissues. -Equalize the body temp -Transport hormones -Transport antibodies and specialized cells to fight infection -Allow clotting to reduce blood loss -Remiove CO2,NH3, & waste products. |
| Blood Components | 1.Plasma 2.White blood cells 3.Platelets 4.Red Blood Cells |
| Plasma Proteins | Albumin, Globuins,Fibtinogen |
| Albumin | maintains osmotic pressure, which affect blood volume |
| Globiluns | act as antibodies and fight disease |
| Fibrinogen | acts as a clotting agent |
| White Blood Cells (WBC) | -called leukocytes -5 types -protect body from "infection & invaders" -granular wbc= produced in bone marrow -Non-granular wbc= produced in tonsils,lymph nodes, spleen= referred to as "lymphocytes" |
| What is larger, a white blood cell or a red blood cell | WBC! |
| Function of WBC | fights desiese and foreign invaders |
| where are wbc made! | BONE MARROW! |
| Platelets | fragment of cells, play a key role in clotting of blood. |
| Platelets(a few facts) | -Surrounded by membranes -contain thermoplastin -When in contact with Ca2+ ions they will cause clotting |
| Clotting Process | 1. skin is cut--> blood leaks out. 2. platelts come into contact with rough surface of the cut and rupture to release chemicals that convert protein fibrinogen into fibrin. 3. RBC get caught in the fibrin net to form a blood clot 4.clot hardens to scab |
| red blood cells(some facts) | -called erythrocytes -specialized for oxygen transportation -hemoglobin allows for large quantities of oxygen to be transported |
| Where are rbc's produced? | Bone marrow! |
| OLD RBC'S: | -recycled in the liver & excrected in feces -used to make bile in the gall blader |
| What happens when you are at a high altitude? | Body adapts to high altitudes by producing more RBC. More RBC=More oxygen. |
| Anemia | low iron levels resuls in: -fewer then normal blood cells -lack of energy due to less oxygen being transported to tissues for cellular respiration. |
| Leukemia | -cancer of WBC's - associated with rapid and uncontrolled cell production |
| plaque | made up of fats, cholesterol, calcium, & cell debris. |
| Plaque Accumunlation results in... | -narrowing of arteries -artery becomes rigid= increase BP & potential blockage. |
| Altherosclerosis | -hardening of arteries due to accumul;ation of fatty deposits. -blood vessel disease. |
| Coronary heart disease | -heart disease -restrict blood flow through coronary arteries resulting in chest pain and heart attack. |
| Heart Attack | -clot in a coronary artery cuts of blood supply to heart muscle & tissue dies. -heart disease |
| Sroke | -Blood Vessel disease -sudden lose of brain function caused by an interuption in blood flow to brain |
Created by:
Skyerene
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