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Breathing is the shizz

Respiratory system

lenny thach

on 25 January 2013

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Transcript of Breathing is the shizz

System Other Respiratory Structures
The air that enters the respiratory system is filtered, warmed and moistened. The air then moves into the pharynx, or throat, and then into the trachea, or windpipe. The tissue that lines the trachea is also lined with mucus and cilia to trap particles and prevent them from going deeper into the respiratory system. Other structures that are not directly involved with respiration, but have important functions in the respiratory system, are the larynx and the epiglottis. The larynx, or voice box, connects the bands of tissue that produce sound when air forced between them causes them to vibrate.
The epiglottis is a flap of tissue located above the larynx. It folds down to close off the entrance to the larynx and trachea when you swallow. This is an involuntary action that keeps food and drink from entering the respiratory system. If you eat too quickly or talk or laugh while eating, your food may get past the epiglottis and “go down the wrong pipe.” The piece of food simulates the cough reflex to expel the material from respiratory system.
Alveolus- (Or Alveoli) Tiny air sac through which gas exchange of external respiration takes place.
Capillary- Tiny blood vessel through which gas exchange takes place.
Bronchioles-Tubes that carry air closer to the site of external respiration.
Pulmonary Vein- Takes oxygenated blood from the lung back to the left atrium of the heart.
Epiglottis- Flap of tissue that closes over the trachea when you swallow.
Larynx- The voice box; contains the vocal cords.
Pharynx- Throat.
Trachea- Windpipe.
Bronchi- The passages through which air spreads through the lungs.
Diaphragm- Dome-shaped muscle that separates the thoracic and abdominal cavities. The diaphragm contracts and relaxes, causing the chest cavity to expand and contract. BY Lenny Thach
Nikole Rogers
Ba Bui Respiratory problems can affect the functioning of other body systems. Imagine not being able to climb a flight of stairs without getting out of breath. The single most important decision you can make for your respiratory health is not to smoke. Smoking damages all parts of the respiratory system and is the main cause of lung cancer. Smoking can also cause Bronchitis and Emphysema, and increase the likelihood of asthma in children. Tobacco use also reduces the rate of lung growth in teens. Avoiding tobacco use and expose will decrease your risk. Air pollution also increases the risk of respiratory health problems and certain types of cancers. Problems of the Respiratory System Sinusitis- Inflammation of the tissues that line the sinuses.
Emphysema- Disease that progressively destroys the walls of the alveoli.
Tuberculosis- Contagious bacterial infection that usually affects the lungs.
Pneumonia- Inflammation of the lungs commonly caused by a bacterial or viral infection.
Asthma- Inflammatory condition in which the trachea, bronchi, and bronchioles become narrowed, causing difficulty breathing. (Asthma isn't always caused by smoking.)
Lung Cancer- Cancer of the lungs. The main function of the respiratory system is to remove carbon dioxide and provide your lungs with fresh oxygen. The process of respiration can be explained in two separate functions:

External Respiration: Oxygen moves from the lungs to the blood, and carbon dioxide moves from the blood into the lungs.
Internal Respiration: Oxygen moves from the blood into the cells, and carbon dioxide moves from the cells into the blood. Gas Exchange
The continual exchange of gases in both external and internal respiration is essential for survival. Oxygen fuels the brain and allows your body to metabolize food for energy to move muscles.

Your lungs automatically fill with air and are emptied in a rhythmic way. This rhythm changes with level of your activity. You’ve probably noticed that when you do aerobic exercise, you breathe harder and faster as opposed to sitting. Breathing is regulated by the brain which sends impulses to stimulate the muscles associated with respiration. This process provides your body with the oxygen it needs to keep going. It also removes carbon dioxide from the lungs. The lungs are found within the chest cavity and are protected by the ribs. In the base of the chest cavity is the diaphragm, a muscle that separates the chest from the abdominal cavity. Other Respiratory Structures
The respiratory system also includes structures in the upper airways. Air enters and exits your body through the nose and mouth. The membranes of the nose are lined with hair like structures called cilia, and with the cells that produce mucus. The cilia and mucus work together to prevent foreign particles such as dust, bacteria, and viruses from moving deeper into the respiratory system.
The lungs are a pair of spongy, air-filled organs located on either side of the chest. The trachea conducts inhaled air into the lungs through its bronchi. The bronchi then divide into smaller and smaller branches (bronchioles), finally becoming microscopic.

Fun facts
An average person breathes in the equivalent of 13 pints of air every minute.
Young children laugh for an average of 300 times in a day, whereas adults on average of 15 – 100 times in a day.
300 million alveoli may be found in a pair of human lungs. Respiratory Health Respiratory System Cigarettes contain more than 4000 chemical compounds and at least 400 toxic substances.

When you inhale, a cigarette burns at 700°C at the tip and around 60°C in the core. This heat breaks down the tobacco to produce various toxins.

As a cigarette burns, the residues are concentrated towards the butt. Research has shown that smoking reduces life expectancy by seven to eight years. Tobacco What's in a cigarette? Acetone – found in nail polish remover
Acetic Acid – an ingredient in hair dye
Ammonia – a common household cleaner
Arsenic – used in rat poison
Benzene – found in rubber cement
Butane – used in lighter fluid
Cadmium – active component in battery acid
Carbon Monoxide – released in car exhaust fumes
Formaldehyde – embalming fluid
Hexamine – found in barbecue lighter fluid
Lead – used in batteries
Napthalene – an ingredient in moth balls
Methanol – a main component in rocket fuel
Nicotine – used as insecticide
Tar – material for paving roads
Toluene - used to manufacture paint
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