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Zoology > Respiration And Exchange Of Gases > Flashcards

Respiration And Exchange Of Gases Flashcards

1
Q

100 ml of blood in an adult has ___g of HB.

A

16g

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2
Q

______is the only cartilage that has central aperture.

A

Cricoid cartilage.

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3
Q

____ml of CO2 is transported as physical solution while ____ enters RBC’s and is transported as bicarbonate ions and carb-amino-haemoglobin.

A

7ml ; rest 93% or 93ml as bicarbonate ions and …

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4
Q

___ml of oxygen binds to ____ml of arterial blood .

A

100ml ; 20ml

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5
Q

About ___ml of oxygen binds to 1g of HB.

A

1.31ml

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6
Q

Alveolar volume is ____while dead air space is ______.

A

350ml ; 150ml.
Out of 500ml TV only 350ml reaches alveoli and is c/d alveolar volume. The rest resides in bronchi and is c/d dead air space.

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7
Q

As oxygen enters blood, oxygen tension of blood _____

A

Increases.

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8
Q

As CO2 leaves blood, CO2 tension in blood ____at the level of alveoli.

A

Decreases.

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9
Q

Collapsing of lungs due to increased pleural pressure is called

A

Atalectasis.

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10
Q

Cornculates and cumiforms are collectively known as

A

Cartilages of santorini.

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11
Q

Coastal breathing accounts for ___% increase in lung volume.

A

25%

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12
Q

Diaphragmatic contractions account for ___% increase in lung volume.

A

75%

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13
Q

Distal part of nose is m/o _____bone, middle part of _____ and tip of _____.

A

Vomer bone ; hyaline cartilage ; elastin cartilage

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14
Q

Give some imp. functions of pleural fluid?

A
  • shock absorber.
  • friction busters
  • maintains inter pleural pressure of 752-754mmHg.
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15
Q

In blood vessels, Po2 is ____ and Pco2 is _____

A

40 ; 45

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16
Q

In external respiration, ____moves into the blood while _____moves out.

A

Oxygen ; carbon dioxide

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17
Q

In internal respiration, _____ moves into the blood and ______ moves out.

A

CO2 ; O2

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18
Q

Inferior nasal conchae is formed by _______bone.

A

Inferior nasal bone.

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19
Q

Inflammation of lungs is called

A

Pleurisy/pleuritis.

20
Q

Larynx is made up of ___ cartilages of ____ different types.

A

9 ; 6

21
Q

Name the bone that constitutes both nasal conchae and paranasal sinuses?

A

Ethamoid bone.

22
Q

Name the glands found in respiratory region?

A

Mucus glands and serous glands

23
Q

Name the surfaces of lungs?

A 
Costal = towards ribs
Capula = top end 
Medistenal = sides b/w lungs 
Diaphragmatic = loser end
24
Q

Non breathing condition is called

A

Apnoea

25
Q

Pco2 and Po2 in systemic arteries is

A 
Pco2= 40mmHg
Po2= 95mmHg
26
Q

Physiological pulmonary ventilation is

A

5L

Less than 5L indicates lung malfunction

27
Q

RV is rich in CO2 or O2 ?

A

CO2

As residual volume is foul air.

28
Q

Solubility of gases depends on ____laws.

A

Henry’s law which states that solubility of gases depends upon partial pressure of gas and solubility coefficient.

29
Q

Superior and inferior nasal conchae is made of _______bone.

A

Ethamoid bone

30
Q

The overall surface area for respiration is

A

71m cube.

31
Q

The point of bifurcation of trachea is called

A

Carina

32
Q

The point where primary bronchi enters lungs is called

A

Hilus.

33
Q

There are about _____alveoli in each lung.

A

300 million

34
Q

Thickness of ARM (alveolar respiratory membrane) is

A

Less than a mm —— NEET

0.5 micro metres I.e 1/16th of RBC ——AIIMS

35
Q

Trachea bifurcates into primary bronchial at the level of

A

5th thoracic vertebrae

36
Q

Under strenuous conditions, ___ ml of oxygen is delivered to tissues.

A

15ml.

37
Q

Under strenuous conditions, venous blood oxygen level is

A

4.4ml/100ml of blood while it’s still 20ml/dl in arterial blood.

38
Q

Venous blood, under normal conditions carries ____ml of oxygen per 100ml.

A

15.6ml

39
Q

Vestibule of nose has got ____cilia/nasal hair while respiratory region has ____cilia.

A

Corase; quite fine

40
Q

Volume of oxygen exchanged with tissues is ___ml

A

(20-15.6ml)=5ml

41
Q

What is special about olfactory region of nose?

A

It has got schinidarian membrane which is sensory columnar epithelial cells that interprets smell.

42
Q

Which alveolar cells are tissue macrophages?

A

Dust cells/ alveolar type-III

43
Q

Which alveolar cells play role in gaseous exchange?

A

Alveolar type-I or simple squamous epithelial cells.

44
Q

Which alveolar cells produce lecithin?

A

Alveolar type-II or cuboidal cells

45
Q

Which lung volume prevents collapsing of lungs?

A

RV

Zoology (10 decks)

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