Respitory System
Published on Dec 02, 2015
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PRESENTATION OUTLINE
NASAL CAVITY
- Structure: divided by nasal septum, has olfactory receptors,
- and the walls are lined with veins and cilia.
- Function: allows for sense of smell, warms air that it
- receives, and traps incoming bacteria.
PHARYNX
- Structure: a red tube that is 5 inches long, contains nasopharynx,
- oropharynx, laryngopharynx; also contains tonsils.
- Function: acts as passageway for food, receives drainage from middle ear.
LARYNX
- Structure: contains thyroid cartilage, epiglottis, vocal cords, and glottis.
- Function: moves air and food in the right direction, allows for speech,
TRACHEA
- Structure: is a 4 in tube that extends to midchest, walls are lined
- with hyaline cartilage.
- Function: allows the esophagus to expand when we swallow a large piece of food,
- also keeps the trachea walls open.
BRONCHI
- Structure: has right and left branches, connects to
- the hilius of the lungs.
- Function: acts as a passageway for air.
LUNGS
- Structure: both left and right sides have lobes, covered with
- pulmonary pleura.
- Function: receives oxygen and contracts to expel carbon dioxide.
BRACHIOLES
- Structure: small little branches in the lungs, reinforced cartilage in the walls,
- Function: to carry oxygen to all part so the lungs.
ALVEOLI
- Structure: small air sacs in the lungs that resemble bunches of grapes.
- Function: gas exchange in the lungs.
