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The myelin on peripheral neurones come in the form of schwann cells. These schwann cells are essentially coils of fat that sit around the neurone and insulate it, this has two fundamental purposes.
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Prokaryotic cells are smaller and more simple than eukaryotic cells. They do not contain membrane bound organelles such as mitochondria, endoplasmic reticulum and golgi apparatus. They also do not have a ...

• when the water potential of the blood is too low (1) * This is detected by receptors in the hypothalamus (2)* the pituitary gland in the brain then secretes more ADH (3) * ADH increases the permeabi...

Phagocytosis is the non-specific engulfing and destroying of a pathogen by white blood cells known as phagocytes. On detecting foreign chemicals produced by a pathogen known as cytokines, the phagocyte wi...

ATP (standing for adenosine triphosphate) and a DNA nucleotide are both examples of nucleotides. Nucleotides are the building blocks for nucleic acids, such as DNA and RNA. DNA nucleotides make up DNA, as...