Blood Basics
How many liters of blood does the human body contain?
5–6 liters
What is the primary function of red blood cells?
Transport oxygen
What is a low red blood cell count called?
What is the overall function of white blood cells?
what is to fight infection
What are the four blood types?
What is A, B, AB, O
What is the liquid part of blood called?
Plasma
What does “biconcave” mean when describing RBCs?
Thinner in the center than the edges
What is a high red blood cell count called?
Polycythemia
What is the main function of platelets?
What determines a person’s blood type?
Antigens on red blood cells
What type of tissue is blood classified as?
Connective
What is the average lifespan of a red blood cell?
120 days
What does a hematocrit test measure?
Percentage of blood made of RBCs
What is one difference between granulocytes and agranulocytes?
what is Granules present vs. absent
Which blood type can receive from all ABO types?
About what percentage of blood volume is plasma?
What is 55%
Which protein in RBCs binds to oxygen?
What is Hemoglobin
List one possible symptom of anemia.
What is fatigue, weakness, dizziness (any one)
Which type of blood cell is most numerous?
What are RBC's
What does the “+” or “–” in blood type mean?
Presence or absence of Rh antigen
Name two substances transported by blood besides oxygen.
What is nutrients, hormones, wastes, carbon dioxide (any two)
Why are RBCs flexible?
What is to squeeze through tiny capillaries
Why can polycythemia be dangerous?
What is the blood becomes thicker, increasing clot risk
What could happen if platelets did not function properly?
What is clotting would not occur or excess bleeding would occur.
Which blood type is the universal donor?
What is O–