Cholinergic Synapses Where two neurones meet, they do not actually come into physical contact with each other – a very small gap, known as the?synaptic cleft, separates them The ends of the ...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.5.8 Humans: The Digestive System The Structure & Function of the Alimentary Canal The digestive system is an example of an?organ system?in which several ...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.5.7 Humans: Balanced Diet The Importance of a Balanced Diet A?balanced diet?consists of all of the food groups in the?correct proportions The necessar...
Calculating the Maximum Frequency of Impulse Conduction After an action potential passes through a section of an axon it undergoes a?period of recovery?and is?unresponsive This is known as t...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.5.6 Practical: Investigating Chlorophyll & Photosynthesis Practical: Investigating Chlorophyll and Photosynthesis Starch is stored in chloroplasts where ...
Factors that Affect the Speed of Conduction The?speed of conduction?of an impulse refers to?how quickly the impulse is transmitted?along a neurone It is determined by multiple factors: The?p...
The Refractory Period Very shortly (about 1 ms)?after an action potential?has been generated in a section of the axon membrane, all the?sodium ion voltage-gated channel proteins in this sect...
Action Potentials Neurones?transmit?electrical impulses, which travel extremely quickly along the neurone?cell surface membrane?from one end of the neurone to the other Unlike a normal elect...
Resting Potentials Neurones?transmit?electrical impulses, which travel extremely quickly along the neurone?cell surface membrane?from one end of the neurone to the other In a?resting axon?(o...
