Blood Flashcards
What are the two components of blood?
Plasma and Formed elements (Erythrocytes, Leukocytes, Platelets)
What is it called when someone has low, normal, or high blood volume?
Hypovolemic (low)
Normovelemic (normal)
Hypervolemic (high)
What is plasma made up of?
92% water
7% proteins
1% other substances
What is the most common cell type found in the blood?
RBC are 99.9% of blood cells where as WBC and platelets are both less than .1%
What’s the most and least common type of white blood cell?
Neutrophils are the most common and basophils are the least common
What is the difference between plasma and interstitial fluid?
Oxygen is higher in plasma than in interstitial fluid so oxygen diffuses into tissues and vice versa with carbon dioxide
Plasma consists of dissolved proteins and interstitial fluid doesn’t
What are the three major classes of protein in the blood
60% Albumin (contributes to osmotic pressure)
35% Globulins (act as antibodies and transport proteins)
4% Fibrinogen (involved in blood clotting, largest of the proteins)
What is hematocrit?
The percent of whole blood occupied by former elements
What is hematocrit also called?
PVC (Packed cell volume)
VPRC (Volume of packed red cells)
What is the shape of a RBC?
Biconcave disks
How long do RBC lasts?
They live about 120 days
Why is it important that RBCs don’t have nucleus or mitochondria?
No nucleus means that the RBC is able to be flexible as it travels through the circulatory system
It allows more room for hemoglobin
No mitochondria is important because it would use the oxygen to “power” the cell
How many polypeptide subunits make up hemoglobin?
Four
What is contained within a each hemoglobin subunit?
A molecule of heme
How are blood types determined?
Blood types are determined by antigens on the surface of erythrocytes