Blood - General Flashcards
1
Q
What are the 5 functions of Blood?
A
- Transporting dissolved gasses, nutrients, hormones, and metabolic wastes
- Regulating the pH and Ion Composition of Interstitial Fluids
- Restricting fluid losses at injury sites
- Defending against toxins and pathogens
- Stabilizing body temperature
(TRRDS)
2
Q
What percent of the blood does plasma take up?
A
46-63%
3
Q
How are formed elements produced?
A
Hemapoiesis
4
Q
What two stem cells make up all formed elements?
A
Myeloid and lymphoid stem cells
5
Q
What is serum?
A
Blood plasma without clotting proteins
6
Q
What is hematocrit?
A
Percentage of a blood sample that consists of formed elements
7
Q
What happens to the hematocrit during dehydration?
A
Hematocrit increases during dehydration, due to a reduction in plasma volume, or after erythropoietin stimulation
