Question

Read the following and answer any four questions from 17(i) to17(v).

The given graph is related to the changes in the volume of lungs of a person at a

rest over a period of 20 seconds.


17(i)

How many breaths per minute is the person taking when at rest?

(a)5 (b)15 (c)17 (d)20

17(ii)

Which two points in the graph (C, D, E or F), shows inspiration and expiration?

(a)D, E (b) D, F (c)C, D (d) E, F


17(iii)

Which of the following muscles help during inhalation?

(a)External intercostal muscles (b) Internal intercostal muscles

(c)Both (a) and (b) (d) None of these


17(iv)

During vigorous exercise, the rate of breathing of normal man is

(a)20 to 25 times per minute (b) 50 to 90 times per minute

(c) 100 to 150 times per minute (d) 40 to 70 times per minute.


17(v)

Which is the correct sequence of air passage during inhalation?

(a)Nostrils → larynx → pharynx → trachea → lungs

(b)Nasal passage → trachea → pharynx → larynx → alveoli

(c)Larynx → nostrils → pharynx →lungs

(d)Nostrils → pharynx → larynx → trachea → alveoli​

Answer 1

Answer:

sorry I didn't know

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