What is high blood pressure? High blood pressure means that your heart is working harder than normal to force blood into the arteries and through the circulatory system. For an adult a blood pressure reading greater that 140 over 90 is considered as high. Normally, the pumping of the heart creates ...

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...

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...

When a diver dives deep for a period of time, breathing regular compressed air, a certain amount on nitrogen will be dissolved in the blood. If the diver comes back up to the reduced pressure of the surface too quickly, small bubbles of nitrogen will form in the blood stream. This is called "the 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...

The lymphatic system Although blood is thought to be the main medium of transport for material around the cell, there is another fluid that serves the cells and is a vital link between the cells and the blood circulation. About 90% of the fluid that leaks out of the capillaries eventually seeps b...

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 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...

Unit 2 Biology- FUNCTIONING ORGANISMS SAC- 'Essay on transport systems' "Transport systems play an essential role in the survival of flowering plants and mammals" Transport systems play an essential role in the survival of flowering plants and mammals. These organisms re...

Can you imagine planning for one of the happiest days of your life, and then having all of that change in the blink of an eye? Imagine finding out that your unborn child will be born with a very serious congenital heart defect. I am going to talk to you about a congenital heart defect known as Hypo...

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 ...

Intro: We have all been stressed out at some time in our lives, in fact many of us are stressed out right now. Most of us have also suffered from colds or have had injuries. Today, I am going to tell you about a few different alternative healing methods and how they can help you deal with stress....

\"How ya holdin\' up, kid?\" The old man in a pit-stained wife beater with his right cheek pressed close against his prized fighter whispers more words of encouragement as his hands knead into the fighter\'s shoulders and as they both stare across the ring at the powerhouse pugilist that has alread...

Congestive heart failure is a condition that happens when the heart is not able to pump enough blood to meet the needs of the body's tissues. When the heart fails, it is unable to pump out all the blood that enters its chambers. In other words, all the blood that is pumped to the body is ret...

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 ...

BUTTERFLIES: Butterflies are flying insects, which comprise the order Lepidoptera with. There are about 15,000 to 20,000 kinds of butterflies. Butterflies are holometobore insects. The largest butterfly ever found is the Queen Alexandra's butterfly. Scientific and non-scientific ...

Smoking is bad for your body and your overall health. There are many side affects that can hurt and even kill your body. It also can harm your lungs and make it hard for you to breathe. When you look at the statistics I don't understand why people do smoke. Cigarette smoking is the most...

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...

CPR Many lives each year are saved because someone in the area of an accident was trained in CPR and was able to keep an injured victim alive long enough for the paramedics to get to the scene. CPR or cardiopulmonary resuscitation is a technique of maintaining blood and oxygen flow through the ...

A Hole in the Heart Last month I have watched a commercial in the Philippines about a child asking for our donation for her operation in her heart. She was born with a hole in her heart, if her heart defect cannot be surgically corrected she would die at a very young age. I was stunned and pe...

Angina · Pain starts in the chest & can spread to neck, jaw & arms. Mainly occurs on the left hand side of the body. · The pain may either be a dull ache or a crushing feeling, causing breathlessness. · The pain occurs because not enough oxygen is getting to the heart, es...

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...

Second Hand Smoke Kills Some of you may say that you don't smoke and consider you selves very healthy. Well if you hang out with a lot of people who smoke, you may not be much better off then your friends that smoke. Second hand smoke is also called Environmental Tobacco Smoke ...

Chapter 22 TOBACCO Lesson 1: Problems For The Tobacco User Objective: To learn the dangers of smoking. Tobacco use is a major cause of illness and death. Being in the company of smokers is risky behavior. TERMS Nicotine – Stimulant – Tar – Carcinogens – Ca...

Marfan's Syndrome In 1896 the French pediatrician Antonin Marfan first characterized and named the disease Marfan's Syndrome, also known as Arachnodatyly an MFS. In the past many have suffered, even died due to the lack of knowledge held by the medical profession pertaining to complicat...