Circulatory system - blood Flashcards
(17 cards)
What are red blood cells called?
Erythrocytes
What are white blood cells called?
Leukocytes
What are platelets called?
Thrombocytes
What is blood made of?
Plasma (55%), White blood cells and platelets (<1%) and red blood cells (45%)
What is plasma made of?
91% water and other dissolved substances:
- Nutrients (glucose)
- Ions (Sodium, Potassium)
- Hormones
- Clotting factors
Red blood cell structure.
Biconcave discs with no nucleus.
Where are Erythrocytes made?
Bone marrow.
What protein in red blood cells carries oxygen?
Haemoglobin
Where are old and abnormal erythrocytes destroyed
Destroyed by the phagocytosis in the spleen.
What organ processes and recycles components of haemoglobin?
The liver.
What are the two types of leucocytes?
Neutrophils and Lymphocytes.
Are leucocytes bigger than red blood cells?
Yes.
What are neutrophils (a type of white blood cell) responsible for?
They fight bacterial infections and are the most prominent type.
What are lymphocytes (a type of white blood cell) responsible for?
They fight viral infections/viruses.
Do thrombocytes have a nucleus?
No.
Where are thrombocytes stored?
In the spleen.
How long do thrombocytes generally live for?
7 days.
