The control of our body is our Brain. The brain is a complex system containing billions of nerves that can process information from our bodies, operate our internal organs, generate thoughts and emotions, store and recall memories, and control movement all at the same time. Scientist have studied the brain for centuries, and are no where near to fully understanding it. Our brain is a wrinkled, jelly-like mass weighing about 3 pounds. Its divided into 4 main sections called ,The brain stem, cerebellum, diencephalon and the cerebrum. The brain is the organ that makes us human. It’s also responsible for each individual’s personality, memory, movements and how we sense the world. The brain is our biggest organ. A healthy brain can operate quickly and automatically. Normal functions can be disrupted by disease or trauma. As we age the brain deteriorates naturally, making us more venerable to problems You can have a stroke which occurs when blood supply to a part of the brain is suddenly cut off, either by a clot or a burst of blood vessel. Another disease that can effect the brain is Alzheimer’s. Alzheimer’s kills brain cells, affecting memory, Alzheimer’s can also be very fatal. You can also get Brain tumors.
Tumors occur when cells lose their ability to control their growth. Our body’s engine is our heart. The heart is responsible for pumping life-sustaining blood(sixty thousand mile long network of blood vessels.) The heart works all the time, beating one-hundred thousand times per day, forty million times a year, in total about three billion heartbeats over an average lifetime. The heart keeps the body freshly supplied with oxygen and nutrients, while clearing away harmful waste matters. The heart circulates nearly two gallons of blood through the body. The system begins in the lungs, where blood picks up oxygen. The heart takes oxygen-rich blood from the lungs and pumps it out to all parts of the body. After the body’s cells take oxygen from the blood, the blood then is sent to the lungs to get more oxygen. Our Lungs fuel us with oxygen, the body’s life sustaining gas. Lungs breath in air then takes oxygen and passes it into the blood stream, where its rushed off to the tissues and organs that require it to function. The lungs also clean the body of carbon dioxide waste created when cells use oxygen. We breath in and out some twenty-two thousand times per day, processing about three hundred cubic feet of air.
The Essay on Diving Animal Oxygen Myoglobin Lungs
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 bends" and requires the person to spend some time in a decompression chamber to gradually reduce the ...
The lungs are divided into sections, or lobes, and contain a large system of air carrying tubes called the respiratory tree. When we breath we inhale oxygen that our bodies use as fuel and exhale the carbon dioxide that our cells release into our blood. The diaphragm is the muscle that makes the lungs expand and contract. The Digestive System is the series of tube like organs that convert our food into body fuel. In all there’s about 30 feet of these intricate pipe works, starting with the mouth and ending in the anus. Along the way, food is broken down, sorted and reprocessed before being circulated around the body to nourish and replace cells, and supply energy to our muscles. The digestive process begins in the mouth and throat, where food is ground into pieces and prepped for delivery to the stomach. Skin is our largest organ. This covering does a lot more than makes us look good. Without it we could evaporate. Skin acts like a waterproof shield, guarding the body against extreme temperatures, damaging sunlight, and harmful chemicals. Skin is also a huge sensor packed with nerves for keeping the brain in touch with the outside world. The skin is divided into three main layer, the protective outer layer( the epidermis); a thick, elastic inner layer(the dermis); and a base layer of fatty tissue(the subcutaneous layer).
The Essay on Summarize The Formation Of Friction Ridge Skin
1. Summarize the formation of friction ridge skin and how it relates to the permanence of fingerprints. The skin over most of our bodies is fairly smooth. ‘Friction Ridges’, however, are found on the digits, palms and soles. They are called ‘friction’ ridges because of their biological function that helps us grasp and hold onto objects. Sometimes compared to fine lines ...
Our skin is under constant attack from the outside world through harmful elements like chemicals, infections, cuts, scrapes, sunlight and water. This organ is tougher than it looks and it has numerous tools to respond to a lifetime of traumas big and small. When we are born our skin is supple and soft. As we age, the skin, mostly around the face, begins to wrinkle as it loses its ability to retain moisture and the dermis loses its elastically. Sun exposure and cigarette smoke speeds up the aging process. In the adolescence stage, skin is soft, supple and strong. Combinations of collagen, elastin and subcutaneous tissue. Hormones stimulate a verity of glands, producing more sweats and oils. The oily skin leads to blocked follicles and acne. In the early adult hood stage the overactive glands of adolescence have settled down and acne clears up. In the middle age stage skin becomes thinner, drier, and less elastic. Skin folds over itself, forming wrinkles. In the old age stage Skin loses fat, collagen, and elastin. Glands decline in number and output, causing dry and broken skin. This is all about the main structures of the human body.
