Respiratory
System
Your system for breathing
Nose
Nose
Function:
• 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
Mouth
Function:
• 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 demonstration
Microscope slides
Stereoscope
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
Lungs
Function:
• Organs that contain the bronchi,
bronchioles, and alveoli
• Expands when inhaling and
contracts when exhaling.
Evidence:
• Computer animation
• Microscope slides
• Stereoscope lung section