Presentation on theme: "Respiration The respiratory system is a series of tubes that brings oxygen into the body and gets rid of carbon dioxide."— Presentation transcript:
1RespirationThe respiratory system is a series of tubes that brings oxygen into the body and gets rid of carbon dioxide.
2Compare inhaled and exhaled air. What is the trend? 5 %~ 1 %16 %78 %EXHALED0.03 %21 %INHALEDCO2ArO2N2GAS
3Breathing (Ventilation) InhalationThe diaphragm and intercostal muscles contract.The chest cavity enlarges.The pressure in the lungs decreases.(Bolye’s Law) ↑ volume = ↓ pressureAir rushes into the lungs.ExhalationThe diaphragm and intercostal muscles relax.The chest cavity decreases in size.The pressure in the lungs increases.(Bolye’s Law) ↓ volume = ↑ pressureAir rushes out of the lungs.
4The diaphragm is a curved sheet of smooth muscle which separates the thorax from the abdomen. When it contracts, the diaphragm flattens, which INCREASES the volume of the THORAX, which then EXPANDS the lungs. Contracting the diaphragm therefore is associated with breathing IN, NOT OUT.
9What pathway does air follow as you exhale? nasal cavity or mouthpharynx (throat)larynx and vocal cordstracheabronchibronchiolesalveoli
10Air ProcessingBlood vessels in your nasal cavity and respiratory passages warm the air.Hairs in your nose trap dust and debris.Mucous in your nasal cavity and respiratory passages trap dust and germs.Cilia in your respiratory passages sweep mucous up out of lungs.
11Gas ExchangeIn the alveoli, oxygen diffuses into blood vessels and carbon dioxide diffuses out of the blood vessels into the alveoli.
12AsthmaConstriction/tightening of the airways causing less air to flow into the lungsCells in the airways might make more mucus than usual.
13Wednesday, April 10, 2013Triggered by allergens such as…..exercise, strong odours, strong emotion, weather……Corrected by brochodiators (puffer) which are medications that open up the airways…..
16PneumoniaPneumonia is the inflammation of the alveoli.Infection from viruses, bacteria or inhaled irritants (cigarette smoke) causes the alveoli to become inflamed and filled with mucus which makes it difficult to breath.Symptoms include difficulty breathing, cough, wheezing chest pain and fatigue.
17Wednesday, April 10, 2013BronchitisViruses, bacteria or inhaled irritants infect the epithelium of the bronchi, resulting in inflammation and increased secretion of mucus.
24CirculationThe circulatory system distributes nutrients and oxygen to all of the body’s cells, removes waste from cells, and regulates the body’s temperature.
25Blood Blood is composed of cells and plasma. Plasma is the liquid component of blood in which blood cells are suspended.
26Red blood cells carry oxygen from the lungs to the body’s cells, and carbon dioxide from the body’s cells to the lungs.
27Hemoglobin is complex protein found in red blood cells that contains an iron molecule. The main function of hemoglobin is to carry oxygen from the lungs to the body tissues, and to exchange the oxygen for carbon dioxide.
28Blood Typesuniversal acceptoruniversal donorAn antibody, a protective protein produced by the immune system in response to the presence of a foreign substance, called an antigen.Antibodies recognize and latch onto antigens and mark them to be removed from the body.
30Platelets allow the blood to clot when blood vessels are broken.
31Blood Vessels Arteries carry blood away from the heart. Veins carry blood towards the heart.
32Pulse Points on the Body As your heart pumps blood through your body, you can feel a pulsing in some of the blood vessels close to the skin's surface, such as in your wrist, neck, or upper arm.
33Wednesday, April 10, 2013Counting your pulse rate is a simple way to find out how fast your heart is beating.
34Capillaries are the smallest blood vessels Capillaries are the smallest blood vessels. Their walls are only one cell thick.Capillaries supply oxygen and nutrients to every cell in the body, and remove carbon dioxide and wastes.
36The Heart The heart has 4 chambers: The right chambers receive deoxygenated blood from the body and pump it to the lungs.The left chambers receive oxygenated blood from the lungs and pump it to the body.
42Heart AttackA heart attack occurs when one or more of the arteries supplying your heart with oxygen-rich blood (coronary arteries) become blocked.
43Sudden Cardiac ArrestThe only remedy for survival is an electric shock from an AED.Sudden cardiac arrest (SCA) is a condition in which the heart suddenly and unexpectedly stops beating.If this happens, blood stops flowing to the brain and other vital organs.
44Therefore, the chance of survival is 0% after 10 minutes. A sudden cardiac arrest victim's chance of survival decreases 10% with each passing minute after collapse.Therefore, the chance of survival is 0% after 10 minutes.
45DefibrillatorsNowadays schools, places of worships, gyms, museums, concert halls, etc ... have defibrillators available in case of a cardiac emergency.by choice.