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Inspiratory Capacity

When the insp...

Question

When the inspiratory muscles contract:

A

The diameter of the thoracic cavity increases

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B

The length of the thoracic cavity increases

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C

The volume of the thoracic cavity is decreased

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D

The diameter and length of the thoracic cavity both increase

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Solution

The correct option is D
The diameter and length of the thoracic cavity both increase

This helps in the inhalation of gases or inspiration.

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Similar questions

Q. Identify the sequence of steps involved during inspiration in rabbit.
(A) Volume of thoracic cavity increases
(B) Contraction of external intercostal muscles moves the rib cage forward
(C) Diaphragm becomes flat
(D) Thoracic cavity expands drawing air into lungs.

Q. Which of the following option is correct regarding the characteristics of the diaphragm?

(A) Found in mammals.
(B) Separate the thoracic and Abdominal cavity.
(C) Formed by inter-costal muscles.
(D) Due to its contraction volume of thoracic cavity increases on Anterior-Posterior axis.

is a muscular partition that helps in breathing by contracting and flattening, thereby increasing the volume of thoracic cavity.

Q. Which of the following increases area of thoracic cavity during inhalation?

Q. Which of these is present between the thoracic cavity and the abdominal cavity?

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