Conducting system of heart beat heart possesses the property of autorhythmicity which means it generates it own electrical impulse and beat independent of nervous and  a complete notes for students. A biology has free revision materials for gcse, ib and a level including notes, past papers and videos for all exam boards including ocr, edexcel, cie, aqa. Biology 2011: the human biology project name _____ circulatory system notes sheet date _____ per_____ circulatory system worksheet. 41 cell biology •• root hair cells, xylem and phloem cells in plants o cells are the basic unit of all forms of life. View notes - biology of the heart notes from biol 217 at university of saint joseph.
The human circulatory system functions to transport blood and oxygen from the lungs to the various tissues of the body the heart pumps the blood throughout the body the lymphatic system is an extension of the human circulatory system that includes cell-mediated and antibody-mediated immune systems. Biology cells exchange and transport biological molecules food and health. Past papers, summary notes and past exam questions by topic for aqa biology a-level unit 1.
The structure of the heart is shown in the diagram below: // the structure is closely related to its function mammals have a double circulation, which means that the right hand side of the heart pumps deoxygenated blood to the lungs in the pulmonary artery to pick up oxygen and release carbon dioxide. The heart is a hollow muscular organ which lies in the middle of the chest cavity it is enclosed in the pericardium that protects the heart and facilitates its pumping action. Function of the circulatory system (1) transport materials heart (pump) antibodies waste, enzymes, glycogen (liver) lungs (oxygen, co 2, wastes. The anatomy of the heart share flipboard email print science biology anatomy basics cells genetics organisms physiology botany ecology chemistry physics geology. Past papers, summary notes, factsheets and past exam questions by topic for aqa, cie, edexcel, ocr and wjec biology as and a-levels.
A level ocr notes a level biology revision notes made for the ocr exam boards this covers all the topics and modules for all specifications including h020, h420, h021, h421. Videos anatomy and physiology ap biology ap chemistry ap environmental science ap physics biology chemistry the circulatory system in humans the human heart. The mammalian heart is a hollow organ and is surrounded by a double membrane, called the pericardium the space between the 2 membranes is filled with a watery fluid which prevents friction when the heart beats. As a current student on this bumpy collegiate pathway, i stumbled upon course hero, where i can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.
Ib biology notes on 62 the transport system the transport system 621 draw and label a diagram of the heart showing the four chambers, associated blood vessels, valves and the route of blood through the heart. The heart consist of 4 chambers biology content sat biology practice sheet living environment - evolution review if you need to contact the course-notes.
Heart disease what is heart disease heart disease is any disorder which affects the heart almost half of heart diseases are from coronary heart disease coronary heart disease is responsible for 82,000 deaths in the i-j each year - an average of 224 people a day. Igcse biology notes refined by kmq unit 1 : characteristics of living things biology is the study of living organisms for something to be alive it needs to perform all seven functions of living thingsmrs gren movement, respiration, sensitivity, growth, reproduction, excretion, nutrition. Human heart-gross structure and anatomy heart heart is a myogenic muscular organ that pumps blood throughout the blood vessel by repeated rhythemic contraction. The heart the heart is the most important muscle in the body as it pumps oxygenated blood to organs and muscles and de-oxygenated blood to the lungs for respiration to occur.