What happens when your diaphragm relaxes and moves upward?

Your lungs deflate and you breathe out

The walls of the alveoli and capillaries are permeable. What does this mean?

Substances can pass through them

Which of the following statements is true?

Your body can't store oxygen at all

What do capillaries have in common with veins and arteries?

They are all types of blood vessels

What do lung cancer and emph ysema have in common?

They are both caused by smoking

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BrainPOP: Respiratory System

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respiratory

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Answers

1
What happens when your diaphragm relaxes and moves upward?
Your bloodstream transfers carbon dioxide to your alveoli
Your alveoli transfer oxygen to your bloodstream
Your lungs deflate and you breathe out
Your lungs inflate and you breathe in
2
The walls of the alveoli and capillaries are permeable. What does this mean?
They are located throughout the body
Substances can pass through them
They are made of muscle
They are made of bone.
3
Which of the following statements is true?
Your body needs carbon dioxide to function properly
Your body stores oxygen in your bloodstream
Your lungs can store several hours' worth of oxygen
Your body can't store oxygen at all
4
Place in order: A Air pressure inside your lungs drops; B The diaphragm contracts; C Air from outside rushes into lungs
A, B, C
B, C, A
C, A, B
B, A, C
5
What word best describes the function of the trachea?
Pumping station
Passageway
Entrance point
Muscle
6
What do capillaries have in common with veins and arteries?
They are all types of blood vessels
They are all types of breathing passages
They are all located in the lungs
They all store oxygen and other nutrients
7
What term best describes the role of carbon dioxide in the human body?
Harmless
Toxic
Necessary
Beneficial
8
What do lung cancer and emphysema have in common?
They both occur among almost everybody as they get older
They are both caused by smoking
They are both caused by the buildup of carbon dioxide in the lungs
They are both normal side effects of respiration
9
Where does the transfer of oxygen into the bloodstream take place?
In the trachea
In the alveoli
In the heart
In the nasal passages
10
What can you infer about the function of the ribcage?
All of the above
It protects the lungs
It helps the lungs pump oxygen
It delivers oxygen from the lungs to the bloodstream

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