Topic 8 Animal Exchange and Transport Flashcards
What is blood
Blood is a tissue
Where are platelets held
In blood plasma
Types of white blood cell
Phagocytes and lymphocytes
Types of red blood cell
Erythrocytes
What are responsible for blood clots
Platelets
Red blood cells function
Transport oxygen from the lungs to all the body cells
Red blood cell features
Biconcave shape
No nucleus
Haemoglobin
Small size
Benefits of binocave shape
Creates large surface area allowing rapid diffusion of oxygen
No nucleus in red blood cells benefits
Frees up more room for haemoglobin
This maximises the amount of oxygen that they can carry
Haemoglobin benefits
Carries oxygen which will then be released to the body cells to be used for respiration
Small size of red blood cell benefits
So small they can pass through tiny capillaries
White blood cell function
Have a nucleus
Can change shape