Blood.....is made up of many differnt types of cells all with very important jobs.
White Blood Cell
Has a nuclei but no heamoglobin
They are attracted to microbes that enter your body
They then engulf harmful microbes and some produce antibodies and/or antitoxins
For clotting blood and forming a mesh over an opening in skin to stop further blood loss
Red Blood Cells
Large surface area - Bi-concave disc shape
Contains haemoglobin which picks up oxygen
Has no nucleus to make room for more oxygen
Thin cell wall
Carries oxygen from the lungs to the body and carbon dioxide from the body back to the lungs
A Nerve Cell
These are extremely long cells
They have many branches at both ends to connect to other nerve cells
The long axis (main branch) is covered in myelin sheath for faster conduction
To carry nerve impulses around your body
Have a long tail so they can swim to find an egg
There are enzymes in the head of the sperm (acrosome) to help the sperm get into the egg
Function: To carry the father’s genetic information (DNA) to the egg
Contains yolk that acts as a food source for the developing embryo (baby) when fertilised
Much larger than other animal cells
Function: Carries the mother’s DNA
They line all the air passages down to the lungs.
Also in oviduct
They have tiny hairs called cilia.
Designed to stop lung damage
Hairs sweep mucus with trapped dust and bacteria back up the throat to be swallowed.