Human Phys 6.1 Flashcards

1
Q

What is the goal of the respiratory system?

A

Provide oxygen and remove CO2

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2
Q

What are the functions that help the respiratory system achieve its goal?

A

Ventilation

Diffusion

O2 and CO2 transport

Regulation of ventilation

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3
Q

How much volume can the lungs hold?

A

4 L

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4
Q

What is the surface area of the lungs?

A

Size of a tennis court

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5
Q

What is the conducting zone?

A

Trachea (1)

Bronchi (2)

Bronchioles (4)

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6
Q

What’s the respiratory zone?

A

Respiratory bronchioles

Alveolar ducts

Alveolar sacs

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7
Q

Does the conducting zone contain cilia?

A

Yes

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8
Q

Does the conducting one contain smooth muscle?

A

Yes

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9
Q

Does the conducting zone contain cartilage?

A

Yes except for bronchioles

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10
Q

Is there cilia, smooth muscle, or cartilage in the respiratory zone?

A

No there’s none

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11
Q

What is the pathway of the airways top to bottom?

A

Trachea

Bronchi

Bronchioles

Respiratory bronchioles

Alveolar ducts

Alveolar sacs

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12
Q

What supplies the bronchiole with blood?

A

Bronchial artery (also shunts blood to pulmonary vein lowering the oxygenation of the blood returning to the heart)

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13
Q

What is the Mucociliary escalator?

A

Goblet cells secrete mucus which forms a blanket over the tops of the Ciliated cells

The regular beating of the cilia sweeps the mucus up and out of the airways carrying any debris that is stuck to it

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14
Q

How is dust removed when there is no cilia present?

A

Alveolar macrophages keep alveoli cells free from dust and then migrate to the bronchioles where the cilia can carry them to the upper airways

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