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PHS Unit 6, Part 3

Respiratory System

Nose Opening where air enters
Nasal Cavity Hollow space in the nose lined with mucous membranes; As air enters, it is warmed, filtered, & moistened
Cilia tiny hair-like structures that trap dirt/particles
Sinuses Cavities in the skull which help in voice resonance
Pharynx Throat (helps carry air to the lungs & food to the stomach)
Epiglottis cartilage flap that prevents food from entering the respiratory tract
Larynx Voicebox (vocal cords vibrate to produce speech when air exits the lungs)
Trachea Windpipe (tube from the larynx to the chest)
Bronchus Lower end of the trachea that divides to connect to the lungs
Bronchiole Lower/smaller bronchi within the lungs
Alveoli Cluster of thin-walled sacs surrounded by capillaries that exchange oxygen and carbon dioxide
Lungs Organs of respiration
Diaphragm Muscle that makes breathing possible
Ventilation the process of breathing
Inspiration (inhalation) the diaphragm contracts (moves down) and the rib cage expands
Expiration (exhalation) the diaphragm relaxes (moves up) and the rib cage returns to normal
External Respiration Exchange of carbon dioxide & oxygen between the lungs and blood stream
Internal Respiration Exchange of carbon dioxide & oxygen between the tissue cells and blood stream
Asthma Narrowed bronchioles caused by spasms/swelling (triggered by allergies or exercise)
Bronchitis Inflammation (swelling) of the bronchial tubes (caused by infection)
Emphysema Walls of alveoli deteriorate and lose their elasticity
Epistaxis nosebleed
Influenza Viral infection that causes coughing, sneezing, fatigue, body aches and contagious with a quick onset
Laryngitis Inflammation of the voicebox
Lung Cancer Abnormal cell growth found mainly in the lungs of smokers
Pneumonia Lung infection of the alveoli
Rhinitis Inflammation of the nasal mucous membranes
Sinusitis Inflammation of the mucous membranes in the sinuses
Tuberculosis Infectious bacterial lung disease where lesions form in the lungs that can spread (Highly contagious)
Lung capacity the volume of air that can fill your lungs
Vital capacity the largest possible amount of air that can be exhaled after drawing a deep breath
Expiratory reserve the amount of air that remains in the lungs after exhaling normally
Tidal volume the amount of air taken in or expelled during normal breathing
Created by: vorachekt



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