BIOLOGY: Respiratory System

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# of heartbeats per breath

5

___% of what you breath is oxygen

21

Parts of the Respiratory System

Mouth, Nose, Larynx, Trachea, Bronchi, Bronchioles, Lungs, Alveoli

Function of the Respiratory System

Supplying Blood w/ oxygen and remove CO2; Vocalize; Water balance

larynx

Made of rings of cartilage; attached to tongue includes epiglottis

Epiglottis

trap door that stops food from going into lungs

Uvula

Directs food, dangles in back of throat

Vocal Chords

In larynx; made of cartilage; thicker=deeper voice; testosterone makes them thicker

Lower Respiratory Track

Trachea and Lungs

Trachea

Cartialge and muscle; horse shoe shaped rings; cartilage keeps it open

Lungs

Left and Right

Left lung

Narrower, longer, two lobes

Right lung

Short, fat, 3 lobes

Bronchi

The passages that branch from the trachea and direct air into the lungs; Right and left

Left Bronchus

Straight across things

Right Bronchus

More vertical, bigger

Bronchioles

smallest at end of bronchis

Alveoli

Only place you can exchange gasses; made of squamous cells; make up the lungs

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