Breathing is partly a result of changes in air pressure-gases move from an area of high pressure to an area of low pressure. Lungs are considered an excretory organ- excrete(get rid of) carbon dioxide
Respiration Chemical reaction that releases energy
What’s the Difference Between Breathing, Circulation, and Respiration? Breathing is simply inhaling and exhaling air. breath
Circulation is the transport of O 2 from the lungs to the body’s cells, and the transport of CO 2 from the body’s cells back to the lungs. Oxygen is carried from lungs to all cells Carbon dioxide is carried from all cells back to lungs It involves the heart, blood vessels, and blood.
Respiration is a chemical reaction that makes energy from glucose (sugar) and oxygen. C 6 H 12 O 6 + 6O 2 ENERGY + 6CO 2 + 6H 2 O glucose + oxygen ENERGY + carbon dioxide + water
Inhalation Breathing in Body gets oxygen from the air Rib muscles contract to pull ribs up and out Diaphragm muscle contracts to pull down the lungs Tissue expands to force (pull) in air. Less air pressure in lungs
Exhalation Breathing out Get rid of carbon dioxide Rib muscles relax Diaphragm muscle relaxes Tissue returns to resting position and forces (pushes) air out Increased air pressure in lungs
Pathway of Oxygen The trachea is a pipe shaped by rings of cartilage. It divides into two tubes called bronchi. Bronchi carry air into each lung.
Pathway of Oxygen Inside the lung, the tubes divide into smaller and smaller tubes called bronchioles. At the end of each of these tubes are small air sacs called alveoli. Capillaries, which are small blood vessels with thin walls, are wrapped around these alveoli.
Pathway of Oxygen Oxygen diffuses through the capillaries into the bloodstream. Carbon dioxide in the bloodstream, diffuses through into the alveoli, and is then removed from the body when we breathe out.
How is air brought into your lungs? The diaphragm, a muscle just below your lungs & near the bottom of the ribcage, helps pull in air into the body (as well as force it out). This is how it does it
Epiglottis- –A flap of tissue at the lower end of the pharynx; when you swallow your epiglottis fold down to prevent food or liquid from entering your airway.
Diseases and Disorders –Things that can harm your respiratory system Smoking-first and second hand smoke –Nicotine –Tar –Carbon monoxide Polluted air Coal Dust asbestos
Asthma-shortness of breath wheezing or coughing Caused often by an allergic reaction Causes the bronchial tubes to contract quickly http://kidshealth.org/kid/closet/movies/asth ma_movie.html Diseases of the Respiratory System
Emphysema-a disease in which the alveoli in the lungs enlarge –Main cause is smoking –Alveoli in the lungs lose their ability to expand and contract-can’t push air out of lungs so less oxygen moves into the bloodstream –People w/emphysema need extra oxygen(from oxygen tanks)
Lung Cancer-main cause is smoking –Leading type of cancer deaths –Caused by inhaling the tar in cigarette smoke –Carcinogens-tar and other ingredients found in smoke that lead to uncontrolled growth of cells(cancer)
Pneumonia: lungs are swollen and filled with pus or liquid
How does the respiratory system work with the circulatory system? The respiratory & circulatory systems work together to get oxygen to cells (and to help them get rid of carbon dioxide). The respiratory system brings oxygen into the lungs and gets it into the blood. The circulatory system takes that oxygen and transports it through the blood to your body cells. Also, carbon dioxide is removed from your cells by the circulatory system and brought to your lungs, which exhale it back out of your body and into the air outside.
When the body needs more oxygen, it will breathe rapidly to get the oxygen it needs to meet its energy needs. As the body gets more active, it needs more oxygen.. My lungs are working extra hard! Can we slow down?.
Q: What two things happen at the same time in the alveoli (air sacs)? Blood picks up oxygen from the lungs at the alveoli and blood releases carbon dioxide into the alveoli.
Your body is so complex that it takes two systems working together as a team to get oxygen to your body cells.
Air enters the bodyNasal or Oral CavityPharynxLarynxTracheaBronchiBronchiolesAlveoli Oxygen diffuses into capillaries and into the bloodstream
Relationship to digestive system Cellular respiration requires glucose and oxygen to release energy to the body C 6 H 12 O 6 + 6O 2 6CO 2 + 6 H 2 O + Energy Oxygen is provided by the respiratory system Glucose is provided by the digestive system (glucose is made during photosynthesis)
“Respirate” A respiratory System Song by. Mr. Rojas www.rrojas.com/home/rojassongs/respiratesong www.rrojas.com/home/rojassongs/respiratesong