Breathing & Exchange of Gases Test

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Breathing & Exchange of Gases Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

The value of TV is about 500 ml for an average adult human male but only some part of it enters lung alveoli and rest of it fills respiratory passage. What should be the distribution ratio for alveolar volume /respiratory passage volume:

A
7:3

B
2:3

C
1:1

D
3:7
Solution
Tidal volume (TV) = volume moved in one breath. Normal = 500 ml
- About 70% of TV reaches alveoli (350 ml) Only this amount is involved in gas exchange
- 30% in airways =respiratory passage (anatomical dead space)
So ratio = 350:150= 7:3
Question 2
1 / -0

Match the following:

respiratory volume value (in ml)

a) RV i) 1000 - 1100

b) ERV ii) 6000 - 8000

c) TV iii) 2500 - 3000

d) IRV iv) 1100 - 1200

A
a)-ii, b)-i, c)-iv, d)-iii

B
a)-ii, b)-iii, c)-i, d)-iv

C
a)-iv, b)-i, c)-ii, d)-iii

D
a)-iii, b)-iv, c)-ii, d)-i

Solution

TV isapprox. 500 mL., i.e., a healthy man caninspire or expire approximately 6000 to 8000mL of air per minute. IRV averages 2500mL to 3000 mL.ERV averages 1000mL to 1100 mL. RV averages 1100 mL to 1200 mL.
Question 3
1 / -0

Match the following:

A
a)-i, b)-iii, c)-v, d)-ii, e)-iv

B
a)-ii, b)-i, c)-iv, d)-iii, e)-v

C
a)-v, b)-iv, c)-iii, d)-i, e)-ii

D
a)-iv, b)-ii, c)-v, d)-i, e)-iii

Solution

Respiratory organ of Nereis is parapodia, Limulus is book gills, Palamnaeus is book lungs and respiratory organ of Dugesia is general body surface. Palaemon respire through gills.
Question 4
1 / -0

Oxygenation of blood occurs in

A
gills

B
spleen

C
lungs

D
liver
Question 5
1 / -0

Ram suffers punctures in his chest cavity without any damage to the lungs in an accident. It results in

A
Reduction in breathing rate

B
Cessation of breathing

C
Rapid increase in breathing rate

D
No effect in breathing

Solution

haemopneumothorax, is a medical term describing the combination of two conditions: pneumothorax, or air in the chest cavity, and hemothorax (also called hæmothorax), or blood in the chest cavity. A hemothorax, pneumothorax or both can occur if the chest wall is punctured.
Becauseof punctured chest wall, the lungs cannot expand, the pressure in the lungs never drops and no air is pulled into the bronchi. Respiration is not possible.
Question 6
1 / -0

Which part of our respiratory system doesn’t need ciliated epithelium and thus have non-ciliated walls ?

A
nasal chamber

B
trachea

C
bronchioles

D
alveoli

Solution

Respiratory system does not need ciliated epithelium and thus have non-ciliated walls such as alveoli. Alveoli are the balloon like structure at which exchange of gases takes place.
Question 7
1 / -0

Which of the following cells eliminate particles and microbes reaching the alveoli?

A
Clara cells

B
Brush cells

C
Dense core granulated cells

D
Dust cells

E
Tracheoles
Question 8
1 / -0

The exposure of carbon monoxide to animals

A
Reduces oxygen transport

B
Reduces carbon dioxide transport

C
Destroys haemoglobin

D
Increases carbon dioxide transport

Solution

The toxicity in animals is caused by the extraordinary affinity of carbon monoxide for haemoglobin which is responsible for the oxygen transport (approx. 250 times greater affinity of carbon monoxide compared to oxygen.because of higher affinity it destroys the haemoglobin.
Question 9
1 / -0

Which of the following structures prevent(s) the food from entering into the wind pipe and lungs during swallowing?

A
Sphincter muscles

B
Epiglottis

C
Mouth

D
Oesophagus
Question 10
1 / -0

No respiratory pigment is found in

A
cockroach

B
earthworm

C
rabbit

D
frog
Question 11
1 / -0

Vital capacity of our lungs include all of the following except :

A
ERV

B
RV

C
IRV

D
TV

Solution

Vital capacity includes ERV, TV and IRV or the maximum volume of air a person can breathe out after a forced inspiration.
Question 12
1 / -0

Which of the following cartilages is the largest?

A
Corniculate cartilage

B
Cricoid cartilage

C
Arytenoid cartilage

D
Thyroid cartilage

E
Cuneiform cartilage
Question 13
1 / -0

Tracheal tube divides into right and left bronchi at the level of :

A
4th thoracic vertebra

B
7th thoracic vertebra

C
6th thoracic vertebra

D
5th thoracic vertebra

Solution

Trachea divides at the level of 5th thoracic vertebra into a right and left primary bronchi.
Question 14
1 / -0

The particles with an aerodynamic diameter of less than 1 µm get deposited in the airways through

A
sedimentation

B
impaction

C
Brownian diffusion

D
interception
Question 15
1 / -0

Book-lungs are the respiratory organs of a

A
scorpion

B
prawn

C
snail

D
cockroach
Question 16
1 / -0

Which of the following is incorrect regarding the different steps of respiration?

A
Breathing or pulmonary ventilation facilitates intake of alveolar air and expulsion of atmospheric air.

B
Diffusion of gases takes place across alveolar membrane.

C
Oxygen is transported to the tissue by blood.

D
Diffusion of O₂and CO₂ takes place between blood and tissues.

E
Catabolism leads to utilisation of O₂by the cells and the release of CO₂.
Question 17
1 / -0

Vestibular folds are also known as

A
rima glottidis

B
aditus

C
glottis

D
false vocal cords

E
wind pipe
Question 18
1 / -0

The point of branching of trachea into two primary bronchi is called

A
gullet

B
carina

C
hilum

D
aditus

E
oropharynx
Question 19
1 / -0

Which of the following bones help in breathing process?

A
Ossicles

B
Phalanges

C
Ribs

D
Vertebrae
Question 20
1 / -0

Pharynx is the common passage for food and air but still food do not enter into the windpipe due to the presence of

A
valve of windpipe

B
Glottis

C
Epiglottis

D
Frenulum

Solution

The epiglottis is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, or voice box. The main function of the epiglottis is to seal off the windpipe during eating, so that food is not accidentally inhaled.
Question 21
1 / -0

Which one of the following is wrong statement with respect to the functions of respiratory system?

A
Warms up the air

B
Cleans up the air

C
Diffusion of gases

D
Humidifies the air

Solution

The function of respiratory system does not deal with the cleaning up of the air
Question 22
1 / -0

The correct sequence of respiration is i) Breathing in oxygen ii) Transportation of gases by the blood iii) Diffusion of gases between blood and tissues iv) Diffusion of gases across alveolar membrane v) Using of oxygen and releasing of carbondioxide

A
i), iii), iv), ii), v)

B
i), iv), ii), iii), v)

C
i), ii), iv), iii)

D
i), ii), iii), iv), v)

Solution

Respiration involves breathing or pulmonary ventilation by which atmospheric air is drawn in, Diffusion of gases across alveolar membrane, Transport of gases by the blood, Diffusion of gases between blood and tissues.Utilisation of oxygen by the cells.
Question 23
1 / -0

During hibernation, frogs respire by

A
external gills

B
lungs and buccopharyngeal cavity

C
internal gills

D
moist skin
Question 24
1 / -0

Respiration in insects is direct due to exchange of gases

A
Directly with the air in tubes

B
Directly with coelomic fluid

C
By tracheal tubes directly with haemocoel which then exchange with tissues.

D
Directly with the air outside through body surface

Solution

Insects have spiracles on their exoskeletons to allow air to enter the trachea. In insects, the tracheal tubes primarily deliver oxygen directly into the insects' tissues. The spiracles can be opened and closed in an efficient manner to reduce water loss. This is done by contracting closer muscles surrounding the spiracle.
Question 25
1 / -0

Which of the following organs produces sound in humans?

A
Pharynx

B
Larynx

C
Epiglottis

D
Nasal conchae

E
Syrinx
Question 26
1 / -0

Inflammation of pleural sacs due to infection or excessive pleural fluid is called

A
eupnea

B
polypnoea

C
trachypnoea

D
pleurisy

E
hyperpnoea
Question 27
1 / -0

If TLC is 5500ml, IRV is 2950ml, ERV is 900ml and TV is 500ml then what will be value of RV ?

A
1200ml

B
1150ml

C
2550ml

D
1100ml

Solution

RV = TLC - IRV – ERV– TV.
substitute the values
RV = 5500-2950-900-500= 1150ml.
Question 28
1 / -0

Which receptor maintains the fluid balance in the body?

A
Baroreceptor

B
Chemoreceptor

C
Interoceptor

D
Osmoreceptor
Question 29
1 / -0

Skin is the only respiratory organ in :

A
Peripatus

B
Ranatigrina

C
Hirudinaria granulosa

D
larvae of mosquitoes

Solution

There are no special respiratory organs in Hirudinaria. In addition to its primary role of a protective covering, the skin also serves a respiratory function. It is provided with a rich supply of haemocoelomic fluid in an extensive system of capillaries and capillary loops, which penetrate into the spaces between the inner ends of the epidermal cells.
Question 30
1 / -0

Those bronchioles which divide into alveolar ducts are called as :

A
Secondary bronchioles

B
Primary bronchioles

C
Tertiary bronchioles

D
Respiratory bronchioles

Solution

Terminal bronchioles give rise to respiratory bronchioles that ultimately lead to the alveoli. Exchange of gases takes place in alveoli with blood veseels.

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Re-Attempt Weekly Quiz Competition

respiratory volume	value (in ml)
a) RV	i) 1000 - 1100
b) ERV	ii) 6000 - 8000
c) TV	iii) 2500 - 3000
d) IRV	iv) 1100 - 1200

Breathing & Exchange of Gases Test - 4

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Breathing & Exchange of Gases Test - 4

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SHARING IS CARING

Question 1

7:3

2:3

1:1

3:7

Solution

Question 2

a)-ii, b)-i, c)-iv, d)-iii

a)-ii, b)-iii, c)-i, d)-iv

a)-iv, b)-i, c)-ii, d)-iii

a)-iii, b)-iv, c)-ii, d)-i

Solution

Question 3

a)-i, b)-iii, c)-v, d)-ii, e)-iv

a)-ii, b)-i, c)-iv, d)-iii, e)-v

a)-v, b)-iv, c)-iii, d)-i, e)-ii

a)-iv, b)-ii, c)-v, d)-i, e)-iii

Solution

Question 4

gills

spleen

lungs

liver

Question 5

Reduction in breathing rate

Cessation of breathing

Rapid increase in breathing rate

No effect in breathing

Solution

Question 6

nasal chamber

trachea

bronchioles

alveoli

Solution

Question 7

Clara cells

Brush cells

Dense core granulated cells

Dust cells

Tracheoles

Question 8

Reduces oxygen transport

Reduces carbon dioxide transport

Destroys haemoglobin

Increases carbon dioxide transport

Solution

Question 9

Sphincter muscles

Epiglottis

Mouth

Oesophagus

Question 10

cockroach

earthworm

rabbit

frog

Question 11

ERV

RV

IRV

TV

Solution

Question 12

Corniculate cartilage

Cricoid cartilage

Arytenoid cartilage

Thyroid cartilage

Cuneiform cartilage

Question 13

4th thoracic vertebra

7th thoracic vertebra

Diffusion of O₂and CO₂ takes place between blood and tissues.

Catabolism leads to utilisation of O₂by the cells and the release of CO₂.