Blood Flashcards
What is the function of a erythrocyte?
To carry oxygen.
What is the structure of an erythrocyte?
- Large surface area due to concave shape and lack of nucleus.
-No nucleus - Haemoglobin is responsible for carrying oxygen.
What are red blood cells?
- They have no nucleus
- Contains Haemoglobin
- Oxygen attaches to haemoglobin = Oxyhaemoglobin.
What is the function of a platelet?
To clot together to seal a wound and prevent blood loss.
What is the structure of a platelet?
- Small fragments of cells
- No nucleus
- Long filaments
- Long tenticles to reach out and make contact with other platelets.
- With other platelets they form a wall to seal a broken blood vessel.
What are the benefits of an increased surface area?
It will absorb/create more oxygen
What is an increased surface area?
Where extra surfaces are created so the body can absorb/create more oxygen.
What appears in a wound and sends a signal to the platelets to the injured area?
Collagen
What is needed to make the platelets wall stronger?
Protein (fibrinogen)
What forms together to make a mesh to make platelets wall stronger?
Fibrin fibres
What is the purpose of a platelets?
To stop Pathagon’s from entering the wound.
What is the function of plasma?
- Transports chemicals and heat
- Helps maintain body temperature at 37 degrees by distributing heat around the body.
What does plasma contain?
Contains waste = Carbon dioxide
Chemicals = minerals, vitamins, hormones, antibodies
What is the structure of plasma?
90% water
The rest is whatever it is dissolved in (chemicals).
What is the function of leucocytes (white blood cells)
To defend the body from toxins.
