Exam 9 Cardiovascular system
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What are the functions of the hematologic system?
- hemostatsis (control of bleeding)
What manufactures clotting factors and clears old and damaged RBCs?
What organ removes old RBCs?
Average life span of RBC:
Average life span of platelets:
What are activated with the platelets and form a stable fibrin matrix over the wound?
What is clear, straw-colored fluid that carries RBC, platelets, & clotting factors?
What three things occur if a blood vessel is injured?
- blood vessel constricts
- platelets adhere, forming a platelet plug
- coagulation ascade (clotting) is initiated, forming a stable fibrin matrix AKA scab
What happens to bon marrow as we age?
becomes less productive
Is hematologic function affected as a person ages?
NO...unless a person is stressed with trauma, chronic illness, or treatment of cancer
What is a disorder that affects the blood?
What may elevation of RBCs indicate?
body is compensating for chronic hypoxia
The major component of erythrocytes is:
What is a complex protein iron compound found in RBCs?
Average female Hgb value:
Average male Hgb value:
Where does Hgb combine with O2? What is this called?
Where does Hgb combine with CO2? What is this called?
What is the percentage of blood cells to plasma called?
What cells are produced in the red bone marrow, lymph tissues, thymus, and spleen?
What is the normal WBC count?
5,000 - 10,000
What is the average life span of a WBC?
What is the function of a WBC?
Two groups of WBCs are:
Granulocytes consist of what three types of cells?
What cell ingests bacteria and dispose of dead tissue per phagocytosis and releases lysozyme?
Is it a granulocyte or agranulocyte?
What is the life span?
- 7 hours
What cells are active in allergic reations and parasitic infections? Are they granulocytes or agranulocytes?
What cells are stimulated by antigens or tissue injury? Are they granulocytes or agranulocytes?
What are the two types of agranulocytes?
Which cells dispose of bacteria and dead cells during the recovery from an acute bacterial infection per phagocytosis?
What cells are responsible for antibody formation to combat antigens? What are two subtypes?
- B-cells and T-cells
Normal platelet count:
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