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Respiratory System. Do Now – Monday, 4/4/14. List the parts of the respiratory system (that you know right now). 1, 3, 5, 7. 2, 4, 6, 8. Field Day. Review. Review. What makes up the respiratory system?. Nose Pharynx (throat) Larynx (voice box) Trachea (windpipe) Bronchi Lungs.
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Do Now – Monday, 4/4/14 • List the parts of the respiratory system (that you know right now)
1, 3, 5, 7 2, 4, 6, 8 Field Day Review Review
What makes up the respiratory system? • Nose • Pharynx (throat) • Larynx (voice box) • Trachea (windpipe) • Bronchi • Lungs
Nose • Consists of bone and cartilage • Responsible for warming, moistening and filtering incoming air
Nose • Inhaled air is warmed by the vessels • Mucus is secreted to moisten air and trap dust particles • Cilia move mucus and trapped particles to pharynx
Pharynx (throat) • Passageway for air and food
Larynx (voice box) • Connects pharynx to trachea • Home to vocal cords • Closes during swallowing to prevent liquid and food from going into the lungs
Trachea (windpipe) • Cartilaginous rings to provide structure • Air passage
Bronchi • Division of the trachea • Splits into smaller bronchioles for air exchange
Lungs • Surrounded by pleural cavity (lubrication) • Composed of lobes
Gas Exchange • The exchange of oxygen and carbon dioxide between the blood and lungs occurs in alveoli.
Gas Exchange Gas Exchange
Gas Exchange • As blood flows through the pulmonary capillaries, it picks up oxygen from the alveoli and unloads carbon dioxide into the alveoli
Inhalation • The most important muscle of inhalation is the diaphragm • Flattens during inhalation