Pathology Lesson 7 Flashcards

1
Q

What is phonation?

A

Speaking

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2
Q

What is ventilation?

A

Movement of air in an out

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3
Q

What is respiration?

A

Exchange of air

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4
Q

What are the three functions of the pulmonary system?

A
  • Gas Exchange
  • Acid-Base Balance
  • Phonation
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5
Q

How many splits occur in the respiratory tree before you get to the alveoli?

A

26

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6
Q

What are seven branches of the respiratory tree?

A
  • Trachea
  • Primary bronchi
  • Secondary bronchi
  • Tertiary bronchi
  • Bronchiole
  • Terminal bronchiole
  • Alveoli
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7
Q

What kind of fruit do alveoli look like?

A

A bunch of grapes

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8
Q

How many alveoli are there?

A

Around 300 million

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9
Q

True or False:

Membrane at alevoli is insterile.

A

False

(It IS sterile!)

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10
Q

How many kinds of circulation are there in the lungs?

A

Two

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11
Q

What causes the sterility of the alevolar membranes?

A

Alveolar macrophages + ciliary current

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12
Q

What two walls are fused together?

A

Alveolar and capillary

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13
Q

Describe how the capillaries are positioned around the alevoli.

A

Like a cobweb

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14
Q

What is Boyle’s Law?

A

Inverse relationship between volume and pressure when temperature is constant.

T is constant! Inverse between V and P.

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15
Q

Boyle’s Law proves that an increase of decrease in lung volume results in what two things?

A

Inspiration and Expiration

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16
Q

True or False:

Inspiration is not always an active process but expiration is.

A

False

(Other way around! Inspiration is active… Expiration is not always active)

17
Q

When we inhale, what two things move to help increase space in our lungs? When we inhale in, it goes “up and out.”

A

Diaphragm and intercostals

18
Q

During inhalation, does alveolar pressure rise or fall?

A

Fall

19
Q

During inhalation, does air flow into or out of the lungs?

A

Into

20
Q

How much air is inspired at rest?

A

500 mL

21
Q

How much air is inhaled during deep breathing for a normal person? An athlete?

A
  • 2-3 L
  • as much as 5 L
22
Q

What kind of chest does a person develop when they have emphysema?

A

Barrel chest

(A normal person is “wider than we are deep.”)

23
Q

What is the pleural space between?

A

Lungs and ribs

24
Q

What kind of pressure do we have to maintain in the plueral space?

A

Negative