Edexcel IGCSE Biology 复习笔记 2.5.8 Humans: The Digestive System
Edexcel IGCSE Biology 复习笔记 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 复习笔记 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 复习笔记 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 复习笔记 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...
Calculating Cardiac Output Cardiac output (CO) is the term used to describe the volume of blood that is pumped by the heart (the left and right ventricle) per unit of time An average adult h...
© 2025. All Rights Reserved. 沪ICP备2023009024号-1