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Respiration System (Lung Capacity Terminology (Tidal Volume-air during…
Respiration System
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Breathing mechanism
Diaphragm-large sheet of muscle located in the abdominal cavity which flattens out during inhalation
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Pharynx-tube like passageway for both food and air. It is the junction of the mouth and nasal cavity in the back of the throat.
Trachea-carries air from larynx to lungs. Lined with hair like cilia and sticky mucous membrane that help trap particles and sweep them out
Larynx-or voice box, is the passageway that can produce sound when air passes through it. It is located at the junction of the air and food passageways.
Lungs-Occupy the chest cavity and function with the heart to remove carbon dioxide from the blood and provide it with oxygen.
Disorders
Chronic Obstructive Pulmonary Disease- a progressive disease affecting your lungs and ability to breathe
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Chronic Bronchitis-mucosa becomes inflamed, mucus production increases, pooled mucus impairs ventilation and gas exchange
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Sudden Infant Death Syndrome-unexplained infant death, causes may be due to neural respiratory control center or abnormal heart rhythm
Asthma-chronic inflamed hypersensitive bronchiole passages, response to irritants with dyspnea, coughing and wheezing
Organs
Upper Tract:
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Nasal Cavity-moistens air, traps incoming foreign particles
Paranasal Sinuses-lighten the skull, resonance chambers for speech and produce mucus
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Lower Tract
Trachea-connects larynx with bronchi, lined with ciliated mucosa, beat continuously in opposite direction of incoming air, mucus loaded with dust, and other debris away from lung
Primary Bronchi-divided by trachea, enters lungs at hilus, right is wider, shorter and straighter than the left because of the heart
Lungs-left 2 lobes, right 3 lobes
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