RESPIRATORY System Flashcards

(29 cards)

1
Q

What measures FEV1 and FEV6

Forced exploratory Volume 1 seconds and 6 seconds?

Lung monitor

A

Vitalograph

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2
Q

What is partial pressure of oxygen in the atmosphere?

A

160mmhg

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3
Q

What is the partial pressure of carbon dioxide in the atmosphere?

A

0.3mmhg

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4
Q

What is the partial pressure of carbon dioxide that we breathe out during exspiration?

A

27 mmhg

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5
Q

What is the partial pressure of oxygen that we breathe out during expiration?

A

120mmhg

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6
Q

What blood vessel carries deoxygenated blood to the alveoli?

A

Pulmonary Artery

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7
Q

What Blood vessel carries RE- oxygenated bloods from the alveoli?

A

Pulmonary vein

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8
Q

What is the partial pressure of oxygen in re-oxygenated blood into the heart?

A

100mmhg

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9
Q

What is the partial pressure of carbon dioxide in re-oxygenated blood into the heart?

A

40mmhg

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10
Q

What is the partial pressure of oxygen in tissues?

A

40mmhg

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11
Q

What is he partial pressure of carbon dioxide on tissues?

A

45mmhg

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12
Q

What is pulmonary ventilation?

A

Movement of air into and out of the lungs.

EXTERNAL RESPIRATION

VE

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13
Q

What is Pulmonary diffusion?

A

Exchange of oxygen and carbon dioxide between the lungs and the blood

EXTERNAL RESPIRATION

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14
Q

What is capillary diffusion ?

A

Exchange of O2 and CO2 between the capillary blood and metabolically active tissues

INTERNAL RESPIRATION

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15
Q

What is Hypoxemia?

A

Low oxygen in the blood.

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16
Q

How is Pulmonary Ventilation assessed?

A

By measuring volume of air exhaled per minute. Abbreviated- VE (minute ventilation)

L.min-1

17
Q

What is the rate of breath per minute?

A

Respiratory frequency ( RF)

Breaths.min-1

18
Q

What is the DEPTH of each breath ?

A

Tidal volume (TV)

L.breath-1

19
Q

How do we measure pulmonary ventilation??

A

VE = RF X TV

VE ( pulmonary ventilation) = Respiratory frequency x Tidal Volume

20
Q

What is dead space?

A

Volume not involved in gas exchange

0.15 L

21
Q

How do we work out volume of gas being delivered to Alveoli? VA ?

A

VA = (TV- dead space ) x RF

22
Q

Wat is the role of pleural membranes?

A

Stop lungs from collapsing.

Lubricates and reduces friction as lungs inflate.

Left and right pleural cavities are separate, if one punctured, only lung on that side will collapse.

23
Q

What is respiration??

A

Any of all processes used to generate metabolic energy , mainly in form of ATP , from breakdown of food

24
Q

What is peripheral circulation ?

A

Blood flow that reaches upper and lower extremities of the body and the surface of skin.

Border area of body

(Hands, feet)

25
What is Boyle’s law??
IF YOU DECREASE THE VOLUME, THE PRESSURE WILL INCREASE. Four basic properties of gases: Pressure (P) Volume (V) P1, V1= P2, V2 PV = k Initial pressure = P1 Temperature (T) Amount (N) Equations:
26
What is the atmosphere/mm Hg conversion rate?
1 atmosphere (atm) = 760 mm Hg
27
What is Ficks law ?
And area of high concentration into an area of low concentration. Rate of diffusion = DAK/h ( C1-C2) ``` D= diffusion rate constant K = partition coefficient A = surface area of absorbing surface H= thickness of membrane ``` ``` C1 = conc. of drug outside C2 = conc. Of drug inside ```
28
What is haemoglobin
(Hb) containing globular protein , increases carrying capacity of blood by 65-70 times. Each hb molecule can bind to 4 02 molecules and depends largely on PO2 of the solutions Oxyhaemoglobin
29
What does 1L of arterial blood at sea level contain??
197 ml 02 bound to hb ( 150g Hb, 1.34 mLO2.g Hb-1) 3 ml dissolved 02 (200 mLO2.L-1 blood)