Components Of Bloods

Question 1

Components of blood

Answer 1

Plasma
Red blood cells (erythrocytes)
White blood cells (leucocytes)
Platelets (thrombocytes)

Question 2

Plasma

Answer 2

55% of blood volume

90% of plasma is water

Question 3

Erythrocytes (rbc)

Answer 3

Disk shaped, no nucleus = more surface area for haemoglobin
Carry haemoglobin for transport of oxygen
Produced in bone marrow and destroyed in liver

Question 4

Leucocytes (wbc)

Answer 4

Destroy pathogens (foreign body causes disease)
5 mains types - Lymphocytes, Monocytes and Granulocytes- Neutrophils, Basophils and Eosinophils

Question 5

Thrombocytes (platelets)

Answer 5

Cell fragments, no nucleus
Blood clotting
Formed in bone marrow
1/3 size of erythrocytes

Question 6

Five types of leucocytes

Answer 6

Lymphocytes
- A promote apoptosis in pathogens
- B creates of antibody (specific)
Monocytes
- Fights of antigens, engulfs
Granulocytes
- Neutrophils, eating engulfing antigens (phagocytosis)
- Basophils, what causes an allergic reaction - non specific
- Eosinophils, contain small amounts of enzyme proteins to break down - non specific

Question 7

Antigen and antibody

Answer 7

Antigens - have identifiers

Antibodies - fight off antigens