 | The Miracle Of Respiration. Part 4 of 7. This is a seven part series about the repertory system. Each part focuses on one particular section of the flawless system and explains why a creator designed the system. Part 4 - The Miracle of The Lungs. |
 | How the Body Works : The Exchange of Gases The Exchange of Gases As air is breathed into the lungs, exchange of gases takes place at the highly folded, moist surface of air sacs. These are richly supplied with blood capillaries, which take up oxygen and give up carbon dioxide. |
 | Respiratory System Structure and Function A summary of the basics on the Respiratory System. |
 | How the Body Works : Breathing Breathing The body's breathing apparatus is enclosed in an expansile bony cage, formed by the ribs, the spinal column and the sternum. The floor of the cage is closed by the muscular diaphragm. Air passes down the windpipe, or trachea, to enter the lungs. During inspiration, or inhaling, the diaphragm moves downward and becomes flatter, and the rib cage expands. This creates a partial vacuum in the lungs and, to equalize the pressure, air is drawn in. Expiration, or exhaling, is passive. The lungs have elastic tissue in their walls and during inspiration this is stretched. In expiration its natural recoil causes the lungs to partially deflate. |
 | Medical animation of alveoli Medical animation of alveoli from www.medflix.com |
 | Respiratory System (2nd Ed., Rev.) (Clip) The mechanism of breathing and the anatomy of the organs that carry out this activity are brought vividly to life through revealing animation and x-ray motion pictures. Additional animation explains how air is cleansed during inhalation and how oxygen is diffused into the bloodstream for use elsewhere in the body. Mouth-to-mouth resuscitation, the Heimlich maneuver and effective treatment for hyperventilation are discussed by a CPR educator. The basic causes and effects of emphysema are also explored. 15 minutes, color. Direct link to purchase the DVD: http://www.phoenixlearninggroup.com/Products/VideoDetail.aspx?id=e7b073e9-976b-484e-8171-744d720e4d49&sub=&cat= |
 | The Respiratory System This segment talks about the respiratory system. FOR EDUCATIONAL PURPOSES ONLY |
 | NurseReview.Org - Animation on Gas Exchange http://NurseReview.Org for more animation (medical / nursing) |
 | How the Body Works : The Digestive System The Digestive System Starting at the mouth, the digestive system helps provide the energy your body needs to perform its many functions. Upon entry into a person's mouth, the teeth cut, tear, crush and grind food. In the mouth, salivary glands respond to the thought or presence of food by producing a fluid containing mucus and the enzymes amylase and maltase. The tongue then mixes the food and rolls it into a soft ball, called the bolus, which is pushed toward the esophagus. Passing through the esophagus the bolus is dropped into the stomach where gastric glands, one secreting digestive enzymes and the other secreting hydrochloric acid, begin to break the food down into smaller pieces. The stomach wall discharges mucus during this phase to protect itself against the action of the gastric acid. From there the food passes into the small intestine through the phylorus, a sphincter muscle that controls the flow of food. It is in the small intestine where a major part of digestion and absorption occurs. The intestinal wall releases enzymes which digest proteins, fats and carbohydrates. Blood and lymph vessels, which supply the small intestine, take away the final products of digestion. The lymphatics transport the fats around the body and finally release them into the bloodstream. Blood takes sugars and amino acids to the liver via the portal vein. The pancreas, like the small intestine, secretes enzymes in an alkaline juice to digest proteins, fats and carbohydrates. It also manufactures hormones which regulate the blood sugar level. From the small intestine, the digested food is received by the liver, which manufactures bile for the gall bladder. The gall bladder stores and discharges the bile, which helps to break down fats into minute droplets. Undigested food from the small intestine is then passed into the large intestine. There blood vessels supplying the large intestine carry away water extracted from the undigested waste. After passing through to the large intestine the ileocecal valve prevents digested food from returning to the small intestine. Undigested food is eliminated from the system through the anus. |
 | Respiratory System The circulation and respiratory system are closely linked together. It started in the respiratory system forms your noise and mouth. With you inhale, you inhale mainly oxygen and to trachea down the trachea. The trachea goes to the bronchus that goes into the lungs, the air you breathe isn't clean so there are small hairs called cilia that traps them and push them up the trachea. Inside the lung are the alveoli, which is the main area where oxygen and carbon dioxide is exchanged. The oxygen goes into one tube inside the alveoli, which leads to the red blood cells, while carbon dioxide leaves the blood cells down another tube and out of the mouth when you exhale. A major muscle in the respiratory system is the diaphragm. When you inhale the diaphragm flattens so your lungs will be able to expand. |
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