Respiratory System Flashcards

1
Q

Name the parts of the respiratory system.

A

Nasal cavity
Pharynx
Trachea
Bronchus
Bronchioles
Lungs
Alveoli

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2
Q

What is the epiglottis?

A

A flap of cartilage on top of the trachea that stops food going into the lungs.

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3
Q

What is at the bottom of the trachea?

A

The bronchi

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4
Q

What is at the end of the bronchi?

A

Bronchioles

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5
Q

What is at the end of the bronchioles?

A

Alveoli

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6
Q

What do the lungs do?

A

Move O2 from air breathed in into the blood stream
Take Co2 out of the bloodstream and into the air we exhale

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7
Q

Describe the alveoli.

A

Air sacks of the lungs, they are elastic with thin walls and have tiny capillaries surrounding them to allow gaseous exchange

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8
Q

What in the nose protects against infection?

A

Tiny hairs called cilia that perform a sweeping motion to trap germs and dust

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9
Q

What are the intercostal muscles?

A

The muscles between the ribs

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10
Q

Describe inhalation and exhalation.

A

Inhalation -
intercostal muscles contract,
Diaphragm contracts and moves down to make chest cavity larger
Pressure in lungs decreases
Inhalation of air

Exhalation -
Intercostal muscles relax,
Diaphragm relaxes and moves up
Pressure in lungs increases
Exhalation of air

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11
Q

What is a healthy amount of breaths per minute?

A

12-20

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