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Pulmonary artery

A. returns highly oxygenated blood to the left heart for distribution throughout the body

B. returns highly oxygenated blood to right heart for distribution throughout the body.

C. delivers blood to lungs low in oxygen

D. delivers highly oxygenated blood in lungs

Correct Answer :

C. delivers blood to lungs low in oxygen


Related Questions

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The greatest volume of air that can be expired after a maximum inspiratory affect, is its

A. residual volume

B. tidal volume

C. vital capacity

D. lung volume

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The opening into the wind pipe or trachea is called

A. larynx

B. epiglottis

C. glottis

D. bronchi

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The oxygen content of expired air in man is

A. 3 per cent

B. 25 per cent

C. 16 per cent

D. 20 per cent

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In response to high altitude hypoxia supply of oxygen to the tissue is maintained by

A. increased alveolar ventilation and increased cardiac output

B. shift in the haemoglobin dissociation curve to the right

C. increased erythrocytes and haemoglobin content of blood

D. all of these

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The process of breathing-in of oxygen rich air from outside is called

A. expiration

B. inspiration

C. respiration

D. oxidation

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Emphysema is a respiratory disease in which

A. the larynx is closed

B. the trachea gets narrowed

C. the gas exchange area of lungs is increased

D. the gas exchange area of lungs is decreased

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The rate and depth of breathing is primarily controlled by medulla by

A. the oxygen content of the blood

B. the nitrogen content of the blood

C. receptors in the larynx

D. the carbon dioxide content of the bkxxl

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Internal respiration refers to

A. exchange of gases between lungs and blood

B. cellular respiration

C. exchange of gases between lungs and atmosphere

D. respiration in open air

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Colour of oxyhaemoglobin is

A. dull red

B. bluish red

C. bright red

D. dull brown

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The vibrations of which of these membranes produces vocal sounds?

A. Glottis

B. Vocal cords

C. Vocal sacs

D. Epiglottis

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All are lung diseases except

A. asthma

B. pericarditis

C. bronchitis

D. pneumonia

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Air directly enters the tracheae via the

A. external nares

B. pharynx

C. larynx

D. bronchi

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Anoxia means

A. absence of oxygen

B. diminished amount of oxygen delivered to the tissues

C. both (a) and (b)

D. none of these

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In frog, the alveoli are surrounded by

A. flattened and ciliated cells to increase the surface area of lungs

B. columnar and ciliated cells to increase the surface area of lungs

C. only ciliated cells to increase the surface area of lungs

D. only squamous cells to decrease the surface area of lungs

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The carbon dioxide pressure in the lung capillaries is

A. less than that in alveolar air

B. more than that in alveolar air

C. equal to that in alveolar air

D. similar to oxygen pressure in the capillaries

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The metal associated with haemoglobin is

A. Copper

B. Magnesium

C. Iron

D. Manganese

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Diaphragm is characteristic of

A. egg-laying mammals only

B. marsupial mammals only

C. eutherian mammals only

D. all the mammals

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The substances undergoing slow oxidation in the body during respiration are known as

A. Oxidases

B. Metabolites

C. ATP

D. ADP

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The condition in which the body suffers from acute oxygen shortage is called

A. anaemia

B. deoxygenation

C. detoxification

D. hypoxia

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A normal man respires in a minute

A. 25-30 times

B. 10-15 times

C. 14-18 times

D. 20-25 times

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The capacity of lungs for air in a healthy man is about

A. 500 ml

B. 1000 ml

C. 2000 ml

D. 3000 ml

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The respiratory disease immediately related to cigarette smoking is

A. hypercapnia

B. pulmonary edema

C. hypoxia

D. emphysema

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The respiratory portion of the respiratory tract consists of

A. Pharynx, larynx, trachea, bronchi and bronchioles

B. Trachea, bronchi, bronchioles, alveolar ducts and alveoli

C. Respiratory bronchioles, alveola ducts, alveolar sacs and alveoli

D. Bronchi, bronchioles, alveolar ducts, alveolar sacs and alveoli

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Among the following, the maximum amount of usable energy is released per-molecule of glucose by

A. yeast cell in fermentation

B. a liver cell in glycolysis

C. an Amoeba in aerobic respiration

D. a muscle cell in lactic acid formation

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Pulmonary artery

A. returns highly oxygenated blood to the left heart for distribution throughout the body

B. returns highly oxygenated blood to right heart for distribution throughout the body.

C. delivers blood to lungs low in oxygen

D. delivers highly oxygenated blood in lungs

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In all vertebrates, the oxygen transport is through

A. haemocyanin

B. haemoglobin

C. myoglobin

D. haemoerythrin

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The maximum volume of inspirable air is called

A. vital capacity

B. residual volume

C. inspiratory capacity

D. any of these

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The term used to denote the difference in volume between the total lung capacity and the vital capacity is

A. tidal volume

B. ventilation rate

C. residual volume

D. all of these

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Oxygen will diffuse through a membrane only if it is

A. moist

B. immersed in water

C. very thin

D. vascular

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The medullary inspiratory centre is always under direct control of

A. chemicals

B. physical conditions

C. nerves

D. all of these