Blood Flashcards
What is blood made up of?
- formed elements
- plasma
What makes up formed elements?
- erythrocytes (RBC)
- Leukocytes (WBC)
- Thrombocytes (platelets)
What percent of formed elements is blood?
45%
What makes up plasma
- water
- some solutes (plasma protein, nutrients, gases, hormones)
What percent of blood is plasma?
55%
What is the difference between serum and plasma?
Serum = plasma minus clotting proteins
How much blood is in the average adult human?
5 L
Characteristics of erythrocytes (RBCs)
- no nucleus
- has hemoglobin
- no mitochondria
- millions of RBC per microliter
Function of thrombocytes (platelets)
aid in clotting and stop bleeding when vessels rupture
Characteristics of thrombocytes
- no nucleus
- fragments from megakaryocytes
where are megakaryocytes found?
bone marrow
Function of leukocytes
attack pathogens and foreign substances in body
What are the two types of leukocytes?
Granular and agranular leukocytes
What are the different types of granular leukocytes?
- neutrophils
- eosinophils
- basophils
What are the different types of agranular leukocytes?
- lymphocytes
- monocytes