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The homeostasis of blood sugar levels in controlled via a careful balance of hormonal secretions leading to an increase of blood sugar concentation when needed. when the blood sugar concentration is too h...
Action potential causes depolarisation in the presynaptic bulb, this causes voltage-gated calcium channels to open. This causes vesicles containing the neurotransmitter acetycholine to move and fuse with ...
A synapse is a receptor that detects
A chromosome is a long, tightly coiled molecule of DNA. Chromosomes are split into sections called genes. In the human body there are 48 chromosomes within each cell (except sex cells which have 23). Chro...
Vaccines contain weakened (or attenuated) antigens which cause immunity to a disease without actually giving the person the disease. They are usually adminstered by injection or sometimes orally (by mouth...
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