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What is the function of the Resp. Sys?
- supply blood with oxygen for transportation in the cells.
- remove CO2 from tissues and blood
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Name two resp. tracts.
- upper respiratory tract
- lower respiratory tract
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upper respiratory tract
consists of the nose, mouth, pharynx, epiglottis, larynx, and trachea.
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lower respiratory tract
consists of the bronchial tree and lungs.
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nasal septum
wall of cartilage that divides the nose into two equal sections
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cilia
- thin hairs located just inside the nostrils
- filter air to remove debris
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mucous membranes
line the nose, digestive, reproductive, and urinary and other parts of the respiratory system
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mucus
slippery secretion produced by the mucous membranes that protects and lubricates these tissues.
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olfactory receptors
- nerve endings that act for the sense of smell and important for the sense of taste.
- located in the mucous membrane in the nasal cavity
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what do tonsils and adenoids do?
protect the body from infection by filtering air entering the mouth and nose
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paranasal sinuses
- air filled cavities lined with mucous membrane
- located in bones within the skull
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what are the functions of paranasal sinuses?
- make bones of skull lighter
- help produce sound, voice
- help produce mucus for lubrication for tissues in nasal cavity
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types of paranasal tissue?
- frontal sinus: located in the frontal bone, above the eyebrows. an infection can cause pain in this area.
- sphenoid sinus: located in the sphenoid bone behind the eye and under the pituitary gland. It's close to the optic nerves and damage to this area can affect vision.
- maxillary sinus: LARGEST sinus located in the maxillary bones. infection can cause pain in maxillary part of the teeth.
- ethmoid sinus: located in ethmoid bones.
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pharynx
- known as the throat
- made up of three divisions; nasopharynx, oropharynx, and laryngopharynx
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larynx
- known as voice box
- protected and supported by cartilage and contains vocal chords.
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epiglottis
lid like structure at the base of the tongue.
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trachea
- transports air to and from the lungs
- also known as the windpipe
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bronchi
two large tubes that branch out from the trachea into two lungs.
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