Blood And Blood Components Flashcards
What is blood made of?
Plasma 55%
Erythrocytes (red blood cells) 45%
Leukocytes (white blood cells) 1%
Thrombocytes (platelets) 1%
What’s an Erythrocyte?
A red blood cell
What’s shape is a red blood cell and what does it carry?
It’s concave and carries Oxygen and CO2
What is Erythropoiesis?
The process in which red blood cells are made
How are red blood cells made?
Starts in bone marrow
Differentiates into pro erythroblast
Synthesis of haemoglobin and nucleus expelled
What are the 2 classifications of leukocyte plasma membranes and explain them?
Granular- filled with granules
A granular-develop into macrophages in tissues
How long can leukocytes live for?
Can live for months/years but most for only a few hours/days
How do leukocytes combat infection?
Phagocytosis
What’s a thrombocyte?
Platelets
What shape is a Thrombocyte?
Disc shaped
What’s the life span of a thrombocyte?
5-9 days
Does a thrombocyte have a nucleus?
No
How are thrombocytes formed?
Fragments of megakaryocytes in red bone marrow then enter circulation
How are platelets involved in homeostasis?
Forms platelets plug for blood clotting
What causes blood groups to be compatible?
The antigens
