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Edexcel IGCSE Maths 复习笔记 3.11.2 Differentiation - Turning Points Remind me of the rule for differentiating powers If y = kxn then dy/dx = knxn-1 What is a turning point? Th...
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Correlations & Causal Relationships - The Heart Correlation is an association or relationship between variables Causation occurs when one variable has an influence or is influenced by, a...
AQA A Level Biology复习笔记3.5.8 Interpreting Data on the Cardiovascular System
Interpreting Data Relating to the Cardiovascular System A cardiac cycle is the sequence of events that make up a single heartbeat It includes periods of heart muscle contraction and relaxati...
AQA A Level Biology复习笔记3.5.7 Capillaries & Tissue Fluid
Capillaries & Tissue Fluid Capillaries are another type of blood vessel present in the circulatory system They have thin walls which are “leaky”, allowing substances to leave the blood t...
AQA A Level Biology复习笔记3.5.6 Blood Vessels
Arteries, Arterioles & Veins The body contains several different types of blood vessel: Arteries: transport blood away from the heart (usually at high pressure) Veins: transport blood to...
AQA A Level Biology复习笔记3.5.5 Investigating Heart Rate
Apparatus & Techniques: Investing Factors Affecting Heart Rate There are a wide range of factors that influence the heart rate of an organism Experiments can be designed to investigate t...
Edexcel IGCSE Maths 复习笔记 3.11.1 Differentiation - Basics
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Edexcel IGCSE Maths 复习笔记 3.10.1 Solving Equations using Graphs
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The Cardiac Cycle The contraction of the heart is called systole, while the relaxation of the heart is called diastole Atrial systole is the period when the atria are contracting and ventric...
