1
Your body couldn’t breathe without this system. Which one is it?
Respiratory system
When you breathe in air, you bring oxygen into your lungs and blow out:
carbon dioxide
_________ is not good for your lungs.
c- smoking
Your two lungs are the same size.
false
Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.
Alveoli
The respiratory system is made up of the trachea, the lungs, and the:
B - Diaphragm
When you inhale, your lungs:
inflate
How many gallons of air do you breathe in each day?
1. 500 gallons
2. between 2100 and 2900
3. more than 3000
Between 2,100 and 2,900
If you stop breathing for longer than 4 minutes, it can permanently damage your organs.
What is the main function of the respiratory system?
A: to break food down
B: supply the blood with oxygen
C: circulate the blood
B
Tiny hairs that move in a wave-like motion to filter dust and other irritants out of your airways.
Cilia
What is the name of the tiny air sacs in your lungs?
c- Alveoli
The voice box is also known as the:
B - Larynx
As you age, your lungs hold less air.
true or false
True
Your lungs are at their peak when you’re in your 20s to mid 30s. After that, your diaphragm gets weaker and your lung tissue can’t stretch as well.
Inside each of your lungs there are tubes called bronchi. These branch into even smaller tubes much like the branches of a tree. What are at the ends of these tubes?
A: alveoli
B: diaphragms
C: cells
A - alveoli
Tissue flap at the entrance to the trachea that closes when you swallow to keep food and liquids out of your airway.
Epiglottis
The trachea is also called the:
c- windpipe
As you breathe, this contracts and flattens to give your lungs room to fill up with air:
C - Diaphragm
Your breathing is controlled by your:
1. lungs
2. Diaphgram
3. Brain
Brain
An area in your brain tells your body when to breathe. It sends signals to your muscles and lungs. If your brain doesn’t send the right signals, you can stop breathing. If this happens to you regularly while you sleep, you may have a condition called central sleep apnea.
The trachea is a part of the respiratory system. What can the trachea also be called and what is its function?A: windpipe, filters the air we breathe
B: windpipe, releases air out of the body
C: tubes; carry air to the lungs
A
organ that allows you to talk and make sounds when air moves in and out.
Larynx
The tiny hairs that keep mucus and dirt out of your lungs are called:
D- cilia
Which of the following is a function of the respiratory system?
1, gas exchange
2. absorption of nutrients
3. transport of oxygen
4. structural support
Gas exchange
About how many miles of airways do your lungs contain?
A: 150 miles
B: 1500 miles
C: 100 miles
D: 500 miles
B
What is responsible for picking up the oxygen in lungs and carrying it to all the body cells that need it?
A: red blood cells
B: white blood cells
C: veins
A
areas between the bones in your head that help regulate the temperature and humidity of the air you inhale.
Sinuses