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...
Capillaries & Tissue Fluid Capillaries are another type of blood vessel present in the circulatory system They have thin walls which are “l(fā)eaky”, allowing substances to leave the blood t...
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...
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 復(fù)習(xí)筆記 3.11.1 Differentiation - Basics What is differentiation? Differentiation is part of the branch of mathematics called Calculus It is concerned with the?rate?at which cha...
根據(jù)經(jīng)濟導(dǎo)師分享的【A-Level ?Economics 經(jīng)濟新考綱解讀】（戳藍字查看詳情），同學(xué)們應(yīng)該了解到2023年經(jīng)濟學(xué)整體最大的變化是：加大了Essay部分的考察，對于不擅長經(jīng)濟學(xué)寫作的同學(xué)，難度呈現(xiàn)明顯向上增加的趨...
Edexcel IGCSE Maths 復(fù)習(xí)筆記 3.10.1 Solving Equations using Graphs How do we use graphs to solve equations? Solutions are always read off the?x-axis Solutions of?f(x) = 0?are where the graph of?y =...
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...
The Walls of the Heart The muscular walls of the atria are thinner than those of the ventricles When the atria contract, the thin muscular walls do not generate much pressure, but enough to ...
