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In the given diagram, identify what is depicted by  and

Choose the correct option

a)

A-Air going out from lungs, B-Ribs and sternum relaxed, C-Volume of thorax increased

b)

A-Air entering lungs, B-Ribs and sternum relaxed, C-Volume of thorax increased

c)

A-Air entering lungs, B-Ribs and sternum raised, C-Volume of thorax increased

d)

A-Air going out from lungs, B-Ribs and sternum relaxed, C-Volume of thorax decreased



Question ID - 2693 | SaraNextGen Top Answer

In the given diagram, identify what is depicted by  and

Choose the correct option

a)

A-Air going out from lungs, B-Ribs and sternum relaxed, C-Volume of thorax increased

b)

A-Air entering lungs, B-Ribs and sternum relaxed, C-Volume of thorax increased

c)

A-Air entering lungs, B-Ribs and sternum raised, C-Volume of thorax increased

d)

A-Air going out from lungs, B-Ribs and sternum relaxed, C-Volume of thorax decreased

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

A – Air entering lungs

B – Ribs and sternum raised

C – Volume of thorax increased

Pulmonary volume increases by the following steps

(i) Contraction of the diaphragm

(ii) Contraction of intercostal muscle

(iii) Lifting of the ribs

(iv) Sternum causing an increase in the volume of thoracic chamber in dorso ventral axis

127 votes


127