Semester 2: L3 - Gas exchange in lungs and tissues Airway disease Flashcards

1
Q

whats henrys law?

A

[gas] in solution proportional to partial pressure of gas (P) and solubility of the gas (s)

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2
Q

whats henrys laws equation?

A

V = s.P

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3
Q

what is more soluble O2 or CO2?

A

CO2

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4
Q

what do red blood cells play important roles in?

A

haemoglobin
carbonic anhydrase
Cl-HCO3 exchanger “Cl-shift”

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5
Q

How does transport happen in or out of the red blood cells?

A

diffusion and bulk flow in blood

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6
Q

whats the ficks law equation?

A

Q = D. A. (P1-P2)

t

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7
Q

what do the letters in ricks law equation stand for?

A
D - diffusion coefficient 
A - surface area
t - thickness of membrane 
p1-p2 : partial pressure 
difference across membrane
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8
Q

How many subunits does haemoglobin have?

A

4

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9
Q

what are three obstructive lung diseases?

A

emphysema, chronic bronchitis, asthma

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10
Q

what is an obstructive lung disease ?

A

Increased resistance to airflow caused by partially occluded airways

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11
Q

what is a restricted lung disease ?

A

expansion of lung restricted

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12
Q

what is pulmonary fibrosis?

A

thickening of alveolar wall, makes it harder to fill lungs

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13
Q

what is the diseases of the chest wall ?

A

ankylosing spondylitis: immobility of vertebra and ribs

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14
Q

what does COPD stand for?

A

chronic obstructive pulmonary disease

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15
Q

what is asthma?

A

chronic respiratory disease characterized by episodes or attacks of inflammation and narrowing of small airways in response to asthma “triggers.”

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16
Q

what is an asthma attack?

A

shortness of breath, wheezing, chest tightness

mild to life threatening

17
Q

what are the two types of asthma?

A

Allergic or Non allergic

18
Q

whats the difference between COPD and asthma?

A

asthma is reversible COPD is not