3.3 Flashcards
1
Q
What are the functions of blood
A
- Transporting nutrients, wastes, and gases around the body
- Leukocytes play a role in immune response
- Platelets are important in haemostasis
2
Q
What are the components of blood
A
- Plasma
- Red blood cells
- Buffy coat: WBCs and platelets
3
Q
Function of blood plasma
A
- Carries antibodies
- Transports dissolved solute
- Carries nutrients and water
4
Q
Function of WBCs
A
Immune response
5
Q
Function of platelets
A
Important for haemostasis
6
Q
Function of erythrocytes
A
Carrying oxygen and CO2 to and from the lungs
7
Q
Erythropoiesis flow chart
A
Pluripotent SS -> myeoloid progenitor -> erythroblast -> RBC
8
Q
What can lymphoid progenitors become?
A
B and T lymphocytes
9
Q
What can myeloid progenitor cells become?
A
- Megakaryocytes
- Granulocyte precursor
- Erythrocyte precursor
- Monocyte precursor
10
Q
Haemostasis process outline
A
- Vascular spasm (constrict -> limits blood)
- Platelets bind to exposed collagen, form platelet plug
- Platelets secrete factors -> fibrinogen cleaved to become fibrin; coagulation phase