Search over 10,000 free study notes

Action potential causes depolarisation of the pre-synaptic membrane. Opens voltage gated Ca²⁺ and Ca²⁺ floods in to the pre-synaptic knob. Ca²⁺ binds vesicles containing a...

Alpha and Beta cells are the two key cells used in blood glucose regulation in the body.Location = Islets of Langerhans (which are groups of cells located predominantly inside the tail of the pancreas)Bet...

There are three main ways in which the lungs are adapted for efficient gas exchange. These are: the fact that structures in the lungs called alveoli provide a large surface area for gas exchange. Also, th...

Carrier proteins are involved in the facilitated diffusion to move ions from a high concentration to a low concentration. They are also involved in the active transport of ions against the concentration g...

An action potential arrives at the pre synaptic membrane which initiates the opening of Ca2+ channels. The influx of Ca2+ ions will cause vesicles containing neurotransmitters to fuse with the pre-synapti...