Lecture: chp 18
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What 3 things are included in the cardio vascular system?
The role of this "system" contains vessels that return interstitial fluid back to the blood
What 6 things does blood transport/carry?
- carbon dioxide
- immune cells
Other than carry/transport molecules, what else can blood do?
Can also regulate body temperature by being diverted to or from the skin
What is the average volume of blood in liters in the average man and woman?
This is another name for red blood cells (RBC)
What can prevent blood clotting?
When blood is centrifuging it seperates into these 3 components
- Buffy coat
This part of blood when its centrifuged consists of leukocytes (wbc) and platelets (thrombocytes)
This term refers to the % of blood volume that consists of red blood cells.
This is a yellowish fluid, is 90% water, and contains numerous different molecules (sodium, chloride, sugars, amino acids, lipids, urea)
What are the 3 main types of protein in plasma?
this protein in plasma transports fatty acids and maintains osmosis, so water stays in the blood
this protein in plasma is a clotting factor.
What is the active form of this protein in our blood when someone has a cut?
This plasma protein in our blood are round proteins for transporting lipids, iron, coppper, and fat soluable vitamins, including antibodies.
Our body contains 25 trillion of these. (2 names)
RBC or erythrocytes
erythrocytes or RBCs are small and carry ______ and _____.
oxygen and carbon dioxide
What is the name of depression in this RBC and what are its benefits?
biconcave discs: it gives mor surface area for oxygen and carbon dioxide to cross over the membrane
T or F: RBCs have no nucleus
The name of this is when a mature RBC is ready to enter the blood and ejects its nucleus and almost all of its organelles
T or F: mature RBCs cannot make proteins
What is the life span of a RBC?
RBCs lacks the organelle, ___a___, meaning it goes through ___b___ . This way it does not use the oxygen it carries.
- a) mitochondria
- b) anaerobic glycolysis
RBCs carry 300 mllion of these molecules
List the things that are in hemaglobin:
a) 4 ________ (split into 2 _____ and 2 _____)
b) 4 ________
c) 4 ________
- a) 4 protein subunits (2 alpha, 2 beta)
- b) 4 heme groups
- c) 4 oxygen molecules within the heme group
when oxygen is bound to hemoglobin, it is called this and is in the color red.
What vitamin and folate are important for cell division?
b12 vitamins and folic acid (folate)
For RBC poduction, what 3 things must our body consume? Which of the 3 is needed for the hemegroup?
- b12 vitamins
- folic acid folate
- iron <-- needed for heme group
Complete this step by step production of RBC
1. Food consumption
3. Enters red bone marrow
5. Old RBCs are broken down in the ____ and ____ by macrophages
- 1. Food consumption
- 2. ABSORPTION OF NUTRIENTS INTO BLOODSTREAM
- 3. enters red bone marrow
- 4. RBC ENTERS BLOOD STREAM FOR 120 DAYS
- 5. Old RBCs ar broken down in the LIVER and SPLEEN by macrophages
When our hematocrit is at 30%, we are considered ____? What % is considered anemia?
- Anemic (anemia) = <45%
What is the abnormality when our hematocrit % in blood is 70%? What are some of the factors that cause this?
- a) overactive stem cells
- b) tumor in bone marrows or kidneys
- c) high altitude
What abnormalitty can this hematocrit level cause?
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