Exercise does affect heart rate. During exercise, the muscles of the body are at work and for the muscles to work energy is required. In order to provide energy to the exercising muscles the blood supply to the muscle increases so that the glucose-a monosaccharide sugar, C6 H12 O6, occurring widely...

Heart Attacks A heart attack is also known as Myocardial Infarction (M.I.). A heart attack occurs when the blood supply to a portion of the heart muscle is severely reduced or stopped. This happens when one of the arteries that supply blood to the heart muscle is blocked by an obstruction. This b...

Cardiovascular diseases rank as America's number 1 killer. They claim the lives of 42.7 percent of the more than 2 million Americans who die each year. Cancer follows, killing 23.8 percent. All other causes of death account for 33.5 percent. Medical research continually seeks to reduce di...

Heart Disease Heart disease is an abnormal condition of the heart and the heart circulation. It is also known as cardiovascular disease which is our nation's number one killer. The coronary arteries supply the heart with oxygen-rich blood. When the arteries narrow, less blood and oxygen f...

The heart is a hollow muscular organ. It is located between the lungs approximately in the middle of the chest. It is positioned in the thoracic cavity between the sternum and the vertebrae. It was placed there meticulously so that it can be compressed or squeezed in case of emergency. The heart is ...

Having Rheumatic Fever I was eleven years old when my oldest sister, Willie, was admitted into the hospital for heart problems. At that age, I didn't understand what was going on with her, but I knew she was very sick. By the time I reached my fifth-teen birthday, my sister was back in the ...

Heart disease is a common disease in people. Its a disease that affects the heart and the cardiovascular system. There are many types of Heart disease. Most often when people think of any kind of heart disease they usually think of the Coronary Artery Disease. That is the narrowing of arteries that ...

Heart attacks are the leading cause of death in the United States. Everyday approximately 1,500 people die from heart attacks. Thousands more suffer crippling effects of some form, and remain disabled for the Rest of their lives. A simple definition of a heart attack is a sudden Failure of the hear...

Have you ever wondered just how important your heart is? Do you ever think about it to keep it beating? Well, the answer is probably no. Your heart is an amazing organ. It has the ability to function on its own. The heart is about the size of you fist lying in the middle of you chest. It is c...

Creatine is used in muscle tissue for the production of "phosphocreatine", an important factor in the formation of ATP, the source of energy for muscle contraction and many other functions in the body. Creatine monohydrate supplementation increases phosphocreatine levels in muscle, especia...

Pseudohypertropic muscular dystrophy, or Duchenne muscular dystrophy is an inherited disease whose symptoms include quickly progressive muscle weakness. This muscle weakness begins in the legs and pelvis and slowly affects the whole body. Duchenne muscular dystrophy only affects boys (girls are on...

Working out A person's body is a remarkable thing. It conditions itself to suit its environment. A farmer who hauls hay in a field has a strong, lean body build. A person who sits and eats all day has a more relaxed and "lazy" body build. A body becomes complacent with the amount of...

ATP powers all the activity of muscles. Muscles move because of the continual and instantaneous breakdown of ATP. The release of energy from ATP is a small thing, but essential to life itself. Muscle is an excitable tissue that it can be stimulated to produce an action potential. An action poten...

The main reason people use anabolic steroids is to increase their sports performance. Body builders are also the top abusers of steroids. Another reason is to increase their muscle size and reduce their body fat. They use it to not be picked on (to intimidate). Some people use it because the have mu...

Exercise has many benefits that will help people live longer, healthier, and happier lives. Not only is exercise healthful, it also has an effect on our overall appearance and body composition, which can directly influence self-esteem, self-worth, and level of confidence. Heart disease is Amer...

Circulatory system, cardiac location and structures, the heart is the driving force of the circulatory system, contracting about 70 times/minute to pump an adequate volume of blood with sufficient pressure to perfuse all body organs. The muscular organ weights from 300 to 400g, it's located wit...

By definition, an aneurysm is swelling of the blood vessel. They commonly occur in an artery or vein after a heart attack. An aneurysm can cause a blood clot, which can lead to major damage to the heart and brain. Identifying an aneurysm is very difficult. There are very little symptoms tha...

Being healthy means eating right and exercising. To keep a healthy balance diet a person should try to eat daily at least a portion of the six major food groups, and exercise at least three times a week to keep the body fit and reduce the chances of poor health. A wholesome diet and lifestyle can he...

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Arrhythmia I am doing my report on Arrhythmia. It affects the cardiac muscle, the heart. Arrhythmia causes three types of problems. It causes the heart to pump too slowly (bradycardia), it causes the heart to pump too fast (tachycardis), and it causes the heart to skip beats (palipations...

A middle aged woman is forced to lose weight because she can no longer keep up with the rigorous schedule of her three teenage sons and four year old daughter. She feels as if exercise will take up too much time that she does not have, but she has heard dietary supplements pose several health risks...

1. Homeostasis is defined as the body's internal environment being within a certain physiological state. There are seven major factors that need to be homeostaticly maintained. They are: concentration of oxygen and carbon dioxide, nutrition of cells, concentration of wastes, concentration of s...

Muscular Dystrophy is a genetic disease characterized by weakness and degeneration of the skeletal or voluntary muscles which control movement. The muscles of the heart and other involuntary muscles can be affected and a few forms involve other organs as well. The major forms of muscular dystrophy a...

EXPLORATION AND DISSECTION OF A MAMMALIAN HEART Abstract: In this experiment, we obtained a fresh heart and dissected it to examine and observe the different parts of the heart, as well as studying how they function and work together. Problem: How can we study the heart through dissectio...

HYPERTENSION Hypertension is a common disorder characterized by a sustained elevation of systolic arterial pressure (top number) of 140 mm Hg or higher, or a diastolic arterial pressure (bottom number) of 90 mm Hg or greater, or both. Hypertension is divided into two categories: essential (o...