Respiratory System. What is respiration? 1.Gas Exchange 1.O 2 + CO 2 + H 2 O 2.Cellular respiration...
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Transcript of Respiratory System. What is respiration? 1.Gas Exchange 1.O 2 + CO 2 + H 2 O 2.Cellular respiration...
Respiratory System
What is respiration?
1. Gas Exchange1. O2 + CO2 + H2O
2. Cellular respiration1. Mitochondria use oxygen to produce energy
(ATP) in aerobic organisms
2. Carbon dioxide is a side productFormula: C6H12O6+ O2 + H2O CO2 + H2O + ATP
The Human Respiratory System
Nasal Passage
• Hairs filter out pathogens and particles
• Warms air
• Humidifies air
Pharynx
• Allows air to move from the nasal cavity to the trachea
Epiglottis
• Prevents food from entering the windpipe (choking)
Larynx
• Protects the trachea (windpipe)
• Houses vocal cords
• http://www.youtube.com/watch?v=wjRsa77u6OU&feature=channel
Trachea
• Windpipe- movement of air to the bronchi in the lungs
• Mucous lining & cilia in trachea remove more particles from air– These particles are either swallowed or
become phlegm
Bronchi and Bronchioles
• Moves air in lung toward the alveoli
Alveoli•End of line in the respiratory passageway•Alveoli increase surface area where gases are absorbed in the lungs•Gas exchange (carbon dioxide and oxygen) occurs in the alveoli capillaries•Very little oxygen in incoming blood, heavily oxygenated outgoing blood
Diaphragm
• Muscle located below the lungs
• Increases and decreases chest cavity volume
How do we breathe?
What controls how fast we breathe?
• Medulla oblongata
What happens when I hold my breath?
• No gas exchange in the capillaries surrounding alveoli
• Carbon dioxide buildup in the body
Respiratory Malfunctions
Causes Symptoms Treatment
Bronchitus Inflammation of main air passages of lungs
Cough, wheezing, shortness of breath
Antibiotics, decongestants
Emphysema Breakdown of alveoli in lungs
Cough with mucus, shortness of breath, fatigue
No cure
Asthma Bronchiole spasm
Wheezing, coughing, shortness of breath
Inhaler