Select the correct statement. (a) Expiration occurs due to external intercostal muscles. (b) Intrapulmonary pressure is lower than the atmospheric pressure during inspiration. (c) Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure. (d) Expiration is initiated due to contraction of diaphragm.

Select the correct statement.
(a) Expiration occurs due to external intercostal
muscles.
(b) Intrapulmonary pressure is lower than the
atmospheric pressure during inspiration.
(c) Inspiration occurs when atmospheric pressure
is less than intrapulmonary pressure.
(d) Expiration is initiated due to contraction of
diaphragm.
by

1 Answer

Answer :

(b) Intrapulmonary pressure is lower than the
atmospheric pressure during inspiration.
by

Related questions

Select the correct events that occur during inspiration. (1) Contraction of diaphragm (2) Contraction of external inter-costal muscles (3) Pulmonary volume decreases (4) Intra pulmonary pressure increases (a) (1) and (2) (b) (3) and (4)

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Last Answer : (1) Contraction of diaphragm

The ventilation movements of the lungs in mammals are governed by (a) muscular walls of lung (b) diaphragm (c) intercostal muscles (d) both (b) and (c)

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Last Answer : (d) both (b) and (c).

The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and / or characteristic. (a) C - Alveoli - Thin walled vascular bag like structures for exchange of gases. (b) D - Lower end of lungs - Diaphragm pulls it down during inspiration. (c) A - Trachea - Long tube supported by complete cartilaginous rings for conducting inspired air. (d) B - Pleural membrane - Surround ribs on both sides to provide cushion against rubbing.

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Last Answer : (a) C - Alveoli - Thin walled vascular bag like structures for exchange of gases.

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When the nurse auscultates chest sounds that are harsh and cracking, sounding like two pieces of leather being rubbed together, she records her finding as a) pleural friction rub. A pleural friction rub is heard secondary to inflammation and loss of lubricating pleural fluid. b) crackles. Crackles are soft, high-pitched, discontinuous popping sounds that occur during inspiration. c) sonorous wheezes. Sonorous wheezes are deep, low-pitched rumbling sounds heard primarily during expiration. d) sibilant wheezes. Sibilant wheezes are continuous, musical, high-pitched, whistle-like sounds heard during inspiration and expiration.

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Difference between inspiration and expiration. -Biology

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Last Answer : answer:

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Pick out the correct statement pertaining to Venturimeter. (A) A Venturimeter with a fixed pressure drop discharges more, when the flow is vertically downward, than when the flow is vertically upward (B) The co-efficient of contraction of a Venturimeter is always unity (C) For a fixed pressure drop, the discharge of a gas through a Venturimeter is greater, when compressibility is taken into account, than when it is neglected (D) None of these

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