Breathing and exchange of gases practice · Hard

If the level of carboxyhaemoglobin in blood reaches upto……, the functioning of central nervous system is severely affected which results in death.

The inhibitory process of respiratory centre in brain that regulates the extent of inspiration is known as

The breathing centre initiates the ventilation in response to

Respiration is an

A spirometer cannot be used to measure

Factors affecting the rate of diffusion is/are

Stretch receptors of bronchi send information to inspiratory centre through

The thoracic chamber is formed dorsally by the …A…, ventrally by the …B…, laterally by the …C… and on lower side by the dome-shaped …D…
Select the right choices for A, B, C and D to complete the given NCERT statement

All of the following are the correct characteristic feature of lining of alveoli, except

Why carbon monoxide (CO) poisonous for man?

Read the following statement regarding human respiratory system.

Trachea is a straight tube extending up to the midthoracic cavity, which divides at the level of
$\underline{(A)}$ vertebra into a right and left $\underline{(B)}$

Choose the option that correctly fill the blanks $A$ and $B$

Between breaths, the intra pleural pressure is approximately ........... $\mathrm{mm} \mathrm{Hg}$ less than atmospheric pressure

Serious lung damage accompanying fibrosis in upper part of lungs is seen in people suffering from

Which of the following changes usually tends to occur in plain dwellers when they move to the high altitudes?
I. Increased breathing rate
II. Increased RBC production
III. Increased WBC production
IV. Increased thrombocyte count
Choose the correct option

The primary bronchi divide to form

Which is a incorrect point in the following?

I. Increased partial pressure of ${O_2}$
II. Increased partial pressure of $C{O_2}$
III. Increased partial pressure of ${H^ + }$
IV. Decreased partial pressure of ${O_2}$
All the above situations favours the dissociation of oxyhaemoglobin except

Identify the type of pulmonary volume/capacity on the basis of quantity of air present in the lungs given below. (Refer NCERT) I. $\sim$ 1100 mL – 1200 mL   II. $\sim$ 500 mL  III. $\sim$ 5000 mL – 6000 mL, Choose the correct option

The percent concentration of carbondioxide in the alveolar air is:

Which of the following is not correct about pleural fluid?

Aerobic respiration involves I. external respiration II. transport of gases III. internal respiration IV. cellular respiration Choose the correct combination of options for the given statements

An increase in lung ventilation rate is caused by which of the following conditions?

The contraction of internal inter costals muscles in human causes

An …A… in the pulmonary volume …B… the intra pulmonary pressure to less than the atmospheric pressure which forces the air from …C… to move into the lungs, i.e., …D…
Choose the correct options for the blanks A, B, C and D to complete the above statement with reference to NCERT textbook

The nerve related with diaphragm is

Intra aortic balloon pump is inflated by

Larynx is a ____ box which helps in sound production and hence called the sound box. Choose the option to fill the blank correctly.

Which of the following is not true regarding respiration in humans

Pick the incorrect statement among the following.

When temperature decreases oxyhaemoglobin curve will become