Monthly Archives: November 2009

Blood is made up of the following: Liquid 55% Plasma and water 91% Nutrients 9% Solids 45% Red cells White cells Platelets Functions of the blood: To carry oxygen to the tissues To remove waste products, eg carbon dioxide, urea … Continue reading →

Respiration can be divided into three parts: Inspiration Expiration Respiratory pause During the Respiratory Pause, the accumulation of carbon dioxide (CO2) in the arterial blood triggers off the respiratory centre in the medulla, which in turn sends a message to … Continue reading →

Muscles form the flesh of the body. They give shape (curves) to the body and most importantly, perform the function of movement. Muscles make up approximately fifty percent of our body weight. There are two main types of muscles: Voluntary … Continue reading →