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THE RESPIRATORY SYSTEM

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by

Hilton Lamprecht

on 19 January 2015

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Transcript of THE RESPIRATORY SYSTEM

THE RESPIRATORY SYSTEM
FUNCTIONS
The Respiratory has three main functions.
1. Supply the body with oxygen
2. Removes carbon dioxide and waste materials
3. Supply oxygen for the blood
DISEASES
Pulmonary Tuberculosis
Lung Cancer
Emphysema
Bronchitis
Pneumonia
Asthma
EFFECT ON OTHER SYSTEMS
Circulatory
Digestive
Nervous
THE RESPIRATORY SYSTEM
NOSE
The nose is the primary upper respiratory organ that acts as a passage way for air to enter the body. The nose warms and humidifies the incoming air while the cilia within the nose trap dust and bacteria.
PHARYNX
The pharynx, also called the throat, is located behind the oral and nasal cavities. The pharynx is divided into three parts: nasopharynx, oropharynx, and laryngopharynx. This organ helps carry the air towards the lung.
LARYNX
The larynx, also known as the voice box, is made up of hyoid bone and cartilage. It helps us to swallow food, breathe, and produce sound.
TRACHEA
The trachea, or windpipe, connects the voice box to the bronchi. The trachea allows air passage into the lungs and helps to keep foreign particles out the airways.
ORGANS
LUNGS
The lungs are two spongy, cone-shaped, and air filled organs. They pass oxygen to the blood stream and help to cast out carbon dioxide. The lungs are lined with a pleura membrane and hold the bronchi and alveoli.
BRONCHI
The bronchi are in a tree-like structure and break into bronchioles and alveoli. They carry oxygen into the lungs and into the alveoli.
ALVEOLI
The alveoli are tiny air filled sacs that are surrounded by capillaries. The average adult has about 600 million alveoli. The alveoli is the site of the oxygen and carbon dioxide exchange.
DIAPHRAGM
The diaphragm is a dome-shape sheet of muscle located below the lungs. During inhalation, the diaphragm contracts. During exhalation, it relaxes.
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