Blood Notes Flashcards
Functions of Blood
Transportation
Regulation
Protection
Describe Transportation
- moves oxygen
- removes CO2
- moves hormones, nutrients, and chemical messengers
Describe Regulation
-body temperature
- maintain PH level
- maintain fluid volume ratio
Describe Protection
-white blood cells
- prevent infection
- prevent blood loss (clotting)
Blood Plasma
- what is it
- percent composition
- Suspension fluid, least dense, extra cellular matrix
- 55%
Blood Plasma Structure and Function
- yellow, sticky fluid that contains over 100 dissolved solutes
- moves formed elements and solutes, REGULATION
Red Blood Cells
- what is it
- percent composition
- formed element, most dense, erythrocyte
- males: 47% females: 42%
Red Blood Cells Structure and Function
- small, biconcave, disc shaped cell without nucleus or mitochondria, flexible, filled with hemoglobin
- gas transportation, hemoglobin binds to oxygen, TRANSPORTATION
White Blood Cells
- what is it
- percent composition
- formed element, Buffy coat, leukocyte
- less than 1%
White Blood Cells Structure and Function
- complete cell, many different types
- fights off pathogens with immune response, PROTECTION
Platelets
- what is it
- percent composition
- formed element, Buffy coat, thrombocyte
- less than 1%
Platelets Structure and Function
- cell fragments
- form blood clots, PROTECTION
Hematocrit Least to Most Dense
- Plasma 55%,
- Buffy coat (leukocytes and thrombocytes) < 1%
- Erythrocytes 47-42%
Hematopoiesis
Hemopoietic stem cell / Hemocytoblast
-Blood formation/ a hormone stimulates production of RBC in red bone marrow.
-A cell in bone marrow which can become any formed element .
Too much RBC?
Too little RBC?
- increased blood viscosity
- less oxygen / Hypoxia
