The volume of 'anatomical dead space’ air is normally
(1) 230 mL
(2) 210 mL
(3) 190 mL
(4) 150 mL.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOxyhaemoglobin dissociates into oxygen and deoxyhaemoglobin at
1. low O2, pressure in tissue
2. high O2, pressure in tissue
3. equal O2, pressure inside and outside tissue
4. all times irrespective of O2, pressure
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA person sitting at rest experiences a temporary cessation of breathing after forced deep breathing for a few minutes.This is due to:-
(1) too much CO2 in the blood
(2) too much O2 in the blood
(3) very little CO2 in the blood
(4) both high O2 and very little CO2 in the blood
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEpidermis is specialized for :-
(1) respiration
(2) absorption
(3) protection
(4) All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the blood of an adult man the total content of haemoglobin is roughly
(1) several hundred grams
(2) tens of gram (10-100 g)
(3) several grams
(4) several hundred milligram
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe haemoglobin content per 100 ml of blood of a normal healthy human adult is:
(1) 5 - 11 g
(2) 25 - 30 g
(3) 17 - 20 g
(4) 12 - 16 g
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : Coughing and sneezing are necessary.
Reason : Coughing and sneezing are reflex actions.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : Most fish when out of water, die of suffocation.
Reason : Atmospheric air contains far less oxygen content than the dissolved oxygen in water.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : During inspiration, pressure of air falls in the thorax.
Reason : There is a rise in volume of thorax during inspiration.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion : During inspiration, the volume of thorax increases.
Reason : This happens due to the relaxation of diaphragm and inspiratory muscles.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology