Cardiovascular Disease There are many lifestyle factors that can increase the risk of cardiovascular disease (CVD) CVD is a general term for conditions affecting the heart and blood vessels It is u...
Blood Clotting Blood clotting is an important process; it prevents excess blood loss, the entry of pathogens, and provides a barrier, or scab, under which wound healing can occur A break in the muc...
Atherosclerosis There are a number of diseases of the heart, or cardiovascular diseases, that can affect blood vessels in different ways Atherosclerosis, also known as hardening of the arteries, is...
Investigating Heart Rate There are a wide range of factors that influence the heart rate of an organism Experiments can be designed to investigate the effect of a named variable on an organism's he...
Cardiac Cycle The cardiac cycle is the series of events that take place in one heart beat, including muscle contraction and relaxation The contraction of the heart is called systole, while the rela...
Blood Vessels: Structure & Function The body contains several different types of blood vessel Arteries: transport blood away from the heart, usually at high pressure, to the tissues Remember; a...
Mammalian Heart: Structure & Function Circulatory systems are systems which transport fluids containing materials needed by the organism, as well as waste materials that need to be removed Circ...
The Importance of Water in Transport Water is the medium in which all metabolic reactions take place in cells and in which all substances are transported around the body Water is composed of atoms ...
The Need for a Circulatory System The cells of all living organisms need a constant supply of reactants for metabolism, e.g. oxygen and glucose Single-celled organisms can gain oxygen and glucose d...
