THE RESPIRATORY SYSTEM BillNye-Respiration - YouTube.

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Presentation transcript:

THE RESPIRATORY SYSTEM BillNye-Respiration - YouTube

I. MAIN FUNCTION OF RESPIRATION * provide the body with OXYGEN it needs to have ENERGY and to grow * transport GASES to and from the CIRCULATORY SYSTEM

II. RESPIRATORY STRUCTURES  LUNGS * sites of GAS EXCHANGE * left (2 lobes) and right (3 lobes)

 MOUTH AND NOSE * air FILTERS through the HAIRS * air MOISTENED and WARMED * lined with CILIA

 PHARYNX * passageway for FOOD and AIR

 EPIGLOTTIS * flap of CARTILAGE that covers the AIR passage when food is SWALLOWED * OPEN when breathing

 LARYNX * VOICE BOX * contains VOCAL CORDS(two ligaments) beth's vocal cords

 TRACHEA * WINDPIPE * ciliated, CARTILAGINOUS tube

 BRONCHI * TWO tubes that lead to LUNGS

 BRONCHIOLES * smallest of branching BRONCHI

 ALVEOLI * clusters of tiny AIR SACS at the ends of the BRONCHIOLES * covered with CAPILLARIES (tiny blood vessels)

 DIAPHRAGM * dome-shaped SKELETAL MUSCLE * INHALE – contracts & moves DOWN * EXHALE – relaxes & moves UP How to save yourself if you're choking! - YouTube

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