Kaplan Prep - Respiratory system Flashcards

1
Q

Ultimately gas exchange occurs where?

A

Pulmonary alveoli

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2
Q

How many lobes are in the LEFT lung?

A

The left lung has two lobes

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3
Q

How many lobes are in the RIGHT lung?

A

The Right lung has three lobes

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4
Q

What muscle is largely responsible for providing movement for respiration?

A

diaphragm

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5
Q

Boyle’s law states what?

A

The pressure of a given quantity of gas is inversely proportional to its volume.

(i. e. more pressure in a smaller volume or less pressure in a greater volume.)

It assumes the temperature is constant

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6
Q

Name two functions of the pleura.

A

Facilitates movement of lungs with body wall.

Enclose the lungs/pleural cavity

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7
Q

What cell is most abundant within the alveoli?

A

Macrophage

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8
Q

What are the two functions of the Type 2 alveolar cell?

A

Produce surfactant
and
replace damaged Type I cells

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9
Q

Which laryngeal cartilage is known as the Adam’s apple?

A

thyroid cartilage

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10
Q

What is the major histology type in the respiratory system?

A

ciliated pseudo-stratified columnar epithelium

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11
Q

What is pulmonary edema?

A

An abnormal build up of fluid within the lung tissue

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12
Q

What are the three parts of the pharynx

A

the nasopharynx, the oropharynx and the laryngopharynx

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13
Q

What is the location of the nasopharynx?

A

the upper part of the throat behind the nose

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14
Q

What is the location of the oropharynx?

A

lies behind the oral cavity, extending from the uvula to the level of the hyoid bone

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15
Q

What is the location of the laryngopharynx?

A

is where both food and air pass. It can be found between the hyoid bone and the larynx and esophagus, which helps guide food and air where to go

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16
Q

What affect does emphysema have on ventilation?

A

reduction

17
Q

What is cystic fibriosis?

A

A serious genetic disease of excretory glands, affecting lungs and other organs; it causes production of very thick mucus that interferes with normal digestion and breathing.

18
Q

What is surfactant excreted by?

A

The Type 2 cells of the alveoli

19
Q

Why is surfactant important?

A

It reduces the surface tension of pulmonary fluids and contributes to the elastic properties of pulmonary tissue. Without surfactant, the lungs could not inflate properly.

20
Q

How many mmHg is the pressure of 1 atm?

A

760

21
Q

There are three gases in a tank. The partial pressure of the first is 120 mmHg, the pressure of the second is 320 mmHg. What is the partial pressure of the third at 1 atm?

A

120 mmHg + 320 mmHg = 440 mmHg. 760 mmHg - 440 mmHg =320 mm Hg. The answer is 320 mm Hg. Remember that 1 atm equals 760 mm Hg.