Related Anatomy Unit 14 RESPIRATORY SYSTEM 1. Trace a breath Nose Pharynx- throat Larynx- voice box Trachea- windpipe 2 Bronchi 2 Lungs Alveoli.

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Presentation transcript:

Related Anatomy Unit 14 RESPIRATORY SYSTEM

1. Trace a breath Nose Pharynx- throat Larynx- voice box Trachea- windpipe 2 Bronchi 2 Lungs Alveoli

2. Lungs Large paired organs in the Thoracic cavity, protected by ribs and pleural membrane

Inspiration- Active phase, lungs expand Expiration- passive phase, lungs relax Diaphragm- horizontal muscle of breathing, under lungs 3.Ventilation- breathing, air drawn in and out

4&5. Gas exchange in Lungs and Tissue External respiration- exchange of gasses in the lungs. Blood gives off CO2 and picks up O2. Internal respiration- exchange of gasses between blood and cells. Blood gives off O2 to the cells and picks up CO2 O2 is carried in hemoglobin of RBC Co2 is carried in Plasma as Bicarbonate ion

6. Regulation of Respiratory Rates Adults / minute Child- 20 and up/ minute Breathing is rhythmic, involuntary and is regulated by the respiratory center in the Brain Stem.

SMOKING

THE END