The Breathing System Flashcards

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1
Q

Where do you get oxygen from and where do you need to get it to?

A

You get oxygen from the air and you need to get it to your bloodstream.

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2
Q

What do your cells need oxygen?

A

Your cells need to be supplied with oxygen for respiration.

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3
Q

What part of your body are your lungs in?

A

The thorax.

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4
Q

Where is the thorax?

A

The thorax is the top part of your body.

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5
Q

What separates the thorax from the lower part of the body?

A

The diaphragm.

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6
Q

What are the lungs protected by?

A

The ribcage.

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7
Q

Where does the air you breathe in go through?

A

The air that you breathe in goes through the trachea.

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8
Q

What does the tranches then split into?

A

The trachea then splits into two tubes called the bronchi.

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9
Q

What is each tube called?

A

A bronchus.

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10
Q

Where does each bronchus go?

A

Each bronchi leads to each lung.

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11
Q

What does the bronchi then split into?

A

The bronchi then split into progressively smaller tubes called the bronchioles.

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12
Q

What do the bronchioles lead to?

A

The alveoli.

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13
Q

What are the alveoli and what happens in them?

A

Alveoli are small bags where gas exchange takes place.

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14
Q

Define ventilation?

A

Ventilation is the movement of air into and out of the lungs.

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15
Q

What happens to the intercostal muscles and the diaphragm when a person breathes in?

A

They contract, the diaphragm flattens out.

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16
Q

What happens to the volume and pressure in the thorax and lungs?

A

The volume in the thorax increases which means that the pressure inside the lungs decreases which draws air in because the lungs get bigger.

17
Q

What happens to the intercostal muscles and the diaphragm when a person breaths out?

A

They relax which cause the diaphragm to move up.

18
Q

What happens to the volume and pressure when a person breaths out?

A

The thorax volume decreases which causes an increase in pressure in the lungs so air is forced out.

19
Q

What do artificial ventilators do?

A

They help people breath, often people who can’t breath by themselves.

20
Q

What does the ventilation machine do?

A

The machine moves air into and out of the lungs.

21
Q

What was the iron lung?

A

The iron lung was a giant case from the neck to the abdomen. Air was pumped into the case to help the person breath.

22
Q

What happens if air was pumped out of the case?

A

The lungs expanded so pressure dropped