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Biology > Breathing And Exchange Of Gases > Flashcards

Breathing And Exchange Of Gases Flashcards

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1
Q

Which system is present in terrestrial arthropods for gaseous exchange

A

Tracheal system

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2
Q

Amphibians have how many modes of respiration and what are they

A

4 modes of respiration
1.skin
2.lungs
3.buccopharyngeal cavity
4.gills

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3
Q

How many stages are there in human respiration and what are they

A

Three stages.
They are:
1.external respiration
2.internal respiration
3.cellular respiration

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4
Q

Name the barrier that separate nasal cavity and buccal cavity

A

Palate

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5
Q

True/false
Q.pharnyx is the common passage for food and air.

A

True

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6
Q

Larynx is attached with

A

Upper portion of trechea

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7
Q

Opening of trechea is called

A

Glotis

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8
Q

Glotis is an opening present in

A

Larnyx

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9
Q

A cartilage that closes glotis

A

Epiglottis

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10
Q

Opening of oesophagus

A

Gullet

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11
Q

Trechea get divided into 2 primary bronchi at

A

5th thoracic vertebrae

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12
Q

C shaped incomplete rings of cartilage is present up to which point of conducting zone

A

Up to initial bronchioles

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13
Q

Work of Simple cuboidal cells present in walls of alveoli

A

Prevent alveoli from collapsing

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14
Q

Both horizontal and oblique fissure are present in

A

Right lung

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15
Q

Only oblique fissure is present in

A

Left lung

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16
Q

Normal inspiration is active process or passive process?

A

Active process

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17
Q

Normal expiration is active process or passive process

A

Passive process

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18
Q

Forceful inspiration is active process or passive process

A

Active process

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19
Q

Forceful expiration is active process or passive process

A

Active process

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20
Q

Name the muscles that help in normal inspiration

A

Diaphragm muscle
External intercostal muscles

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21
Q

During normal inspiration intra pulmonary pressure increase /decrease?

A

Decrease

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22
Q

During normal expiration intra pulmonary pressure decrease/increase?

A

Increase

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23
Q

Name the muscles that helps in forceful expiration

A

1.internal intercostal muscles
2.abdominal muscle

24
Q

I breath means

A

1 inspiration plus 1 expiration

25
Q

An instrument that is used to measure pulmonary volume is

A

Spirometer

26
Q

From external nostrils upto terminal bronchioles is known as

A

Conducting part

27
Q

Alveoli and their ducts form

A

Respiratory zone

28
Q

Squamous cells of alveoli are called

A

Pneumocyte

29
Q

Which type of cells in alveoli help in gaseous exchange

A

Type 1 pneumocyte

30
Q

Name the cells that prevent alveoli from collapsing

A

Type 2 pneumocyte

31
Q

Spirometer cannot measure

A

Residual volume

32
Q

Partial pressure of oxygen in atmosphere is

A

159mmhg

33
Q

Partial pressure of oxygen in alveoli is

A

104 mmhg

34
Q

Partial pressure of oxygen in expired air is

A

116 mmhg

35
Q

Partial pressure of oxygen in oxygenated blood is

A

95 mmhg

36
Q

Partial pressure of oxygen in deoxygenated blood is

A

40 mmhg

37
Q

Partial pressure of oxygen in tissue is

A

40 mmhg

38
Q

Partial pressure of carbon dioxide in inspired air(atmosphere)is

A

0.3 mmhg

39
Q

Partial pressure of carbon dioxide in expired air is

A

32 mmhg

40
Q

Partial pressure of carbon dioxide in alveoli is

A

40 mmhg

41
Q

Partial pressure of carbon dioxide in oxygenated blood is

A

40 mmhg

42
Q

Partial pressure of carbon dioxide in deoxygenated blood is

A

45mmhg

43
Q

Partial pressure of carbon dioxide in tissue is

A

45 mmhg

44
Q

What is the partial pressure of oxygen when oxygen haemoglobin dissociation curve reaches p 50

A

26 mmhg

45
Q

Oxygen haemoglobin dissociation curve is also known as

A

S shaped or signoid curve

46
Q

True /false
Co2 is more soluble than o2

A

True

47
Q

O2 binds with which part of haemoglobin

A

Fe2+ part of haeme

48
Q

Co2 binds with which part of haemoglobin

A

Globin part of haemoglobin

49
Q

How many percent of co2 is directly dissolved in plasma

A

7 percent

50
Q

How many percent of oxygen is directly dissolved in plasma

A

3 percent

51
Q

100ml of oxygenated blood carry how many oxygen

A

It carry 20ml o2

52
Q

Out of 20 ML oxygen how many ML o2 I’d delivered to the tissue

A

5 ml o2

53
Q

100 ml of deoxygenated blood deliver approximately how many ml of co2 to the alveoli

A

4ml

54
Q

Thickness of diffusion membrane must be less than

A

1 mm

55
Q

How many o2 molecules binds with single hb molecules

A

4

Biology (2 decks)

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