Respiratory System

Your system for breathing

Nose

NoseFunction: • Inhales Oxygen (O2) and Exhales Carbon Dioxide (CO2)• Uses nose hair (Cilia) to filter dust and germs

from entering the lungs• Moistens the air• Warms air Evidence: • Sneezing• Boogers/Mucus• Nose Hair (cilia)

Mouth

MouthFunction: • Allows more air to come into the body

Evidence: • Exercise and out of breath = breathe through

your mouth• Sick and nose is clogged = breathe through

your mouth

Trachea

Trachea

Function: • Brings Oxygen from nose/mouth to the lungs

and removes Carbon Dioxide

Evidence: • X-Ray/Swallow video• Tracheotomy• Pig

Larynx

Larynx

Function: • Air vibrates the vocal cords to make noise

(talking)

Evidence: • Put two fingers on voice box and hear and feel it

vibrate• Video of vocal cords

Diaphragm

Diaphragm

Function: • A muscle that moves up to force air out of the

lungs when you exhale• And moves down to let extra space in when you

inhale

Evidence: • Lung bottle model• Big deep breathe• Computer Animation

Epiglottis

Epiglottis

Function: • Small flap that covers the trachea when you

swallow so food does not get into your lungs

Evidence: • Swallow video• Coughing when something goes down the

wrong pipe

Bronchi

Bronchi

Function:Tubes to take oxygen(O2) to alveoli and remove carbon dioxide(CO2) from alveoli to exhale

Evidence:Bronchitis Computer Animation

Alveoli

Alveoli

Alveoli

Function:Small sacs that send oxygen to the cells and removes CO2 from cells

Evidence: Computer Animation Class demonstrationMicroscope slidesStereoscope

Pharynx

Pharynx

Function:• It is the throat• Tube that connects to the digestive

system (esophagus) and the respiratory system (trachea)

Evidence:• Pictures • Sore throat

Lungs

LungsFunction:• Organs that contain the

bronchi, bronchioles, and alveoli

• Expands when inhaling and contracts when exhaling.

Evidence:• Computer animation• Microscope slides• Stereoscope lung section