An Experiment to Show the Effect of Exercise on the Body

Only available on StudyMode
  • Download(s) : 642
  • Published : May 4, 2013
Open Document
Text Preview
An Experiment To Show The Effect Of Exercise On The Body

Aim
The aim of the experiment is to find out the effect exercise has on the body, and why these changes take place in the body.

Introduction
Respiration is the physical process by which living organisms take in oxygen from the surrounding medium and emit carbon dioxide. The term respiration is also used to refer to the liberation of energy, within the cell, from fuel molecules such as carbohydrates and fats. Carbon dioxide and water are the products of this process, which is sometimes called cellular respiration to distinguish it from the physical process of breathing. Cellular respiration is similar in most organisms, from one-celled organisms such as the amoeba and paramecium to higher animals.

Human Lungs
Though the right lung has three lobes, the left lung, with a cleft to accommodate the heart, has only two. The two branches of the trachea, called bronchi, subdivide within the lobes into smaller a of the body, and carbon dioxide diffuses out of the blood into the lungs, where it is exhaled. And smaller air vessels. They terminate in alveoli, tiny air sacs surrounded by capillaries. When the alveoli inflate with inhaled air, oxygen diffuses into the blood in the capillaries to be pumped by the heart to the tissues.

Prediction
I think that if you exercise for a longer period of time respiration will increase and so will your heart and breathing rate.
Our breathing rate increases when we exercise because we are breathing more quickly and because our muscles are working harder they need more oxygen. Also the extra carbon dioxide, which we produce, must be removed quickly otherwise it might build up and poison our tissues.

We do not have to think about removing the carbon dioxide as it happens automatically. The senses in the brain detect that there is too much carbon dioxide in the bloodstream, and this automatically causes the body to breathe much faster. We not only breathe faster but we will breathe much more deeply. Respiration will increase as you will need more oxygen and glucose for respiration and your muscles will need energy from respiration to keep exercising. Respiration is the release of energy from glucose and any other substances. Energy is required for growth, repair and movement and other metabolic activities. The energy released from glucose in respiration is used to produce a chemical called adenosine triphosphate. Adenosine triphosphate is stored for future use. There are two types of respiration, aerobic and anaerobic respiration. Aerobic respiration releases more energy than anaerobic respiration. The word equation for aerobic respiration is:

Glucose + Oxygen Carbon Dioxide + Water + Energy

The chemical formula is:
C6H12O6 + 6O2 6CO2 + 6H2O + ATP

The energy released is used for movement (kinetic) and the rest is released as heat energy this what cause a temperature increase. Your body then sweats as this cools your body down but you won’t return to normal temperature. When you become hot the hairs are lowered on the arm by relaxing the erector muscles. As a result the hairs lie down flat and air is no longer trapped between them so more heat is lost easily from the body. Also the blood vessels on the surface of the skin widen so that more blood flows through them, and heat is lost as t flows close to the surface. Our skin gets covered with sweat and, which is secreted by the sweat glands. When the sweat evaporates, it cools the skin and the blood flowing through it. During exercise the heart has to supply more oxygen to the muscles, which makes the heart, beat faster. During exercise lactic acid builds up in the body. The lactic acid is a mild poison and it causes our muscles to ache. When we have stopped exercising we have to remove this lactic acid, which is done by breaking it down into carbon dioxide and water. Oxygen is needed for this,...
tracking img