Human Respiratory System

Which of the following statement is incorrect about nasopharynx ?

Given below are two statements :

Statement 1 : Only oesophagus open into pharynx.

Statement 2 : Only wind pipe open into pharynx.

In the light of the above statements choose the most appropriate answer from the options given below.

Read the following steps and arrange them in correct sequence for the process of inspiration:

A. Increase thoracic volume

B. Air moves into lungs

C. The contraction in diaphragm and EICM

D. Increase pulmonary volume

E. Lungs expand

F. Decrease the pulmonary pressure (IPP)

Assertion (A) : Expiration is a passive process.

Reason (R) : In this process, muscles of diaphragm and external intercostal muscles relax.

The correct option among the following is

Assertion: Inspiration is an active process.

Reason: It takes place by the contraction of muscles of diaphragm and external intercostal muscles.

The correct option among the following is

Which one of the following is a possibility for most of us in regard to breathing, by making conscious effort?

The formation of oxyhaemoglobin inside RBCs is a
(a) Physical process
(b) Chemical process
(c) Enzyme catalysed reaction
(d) Partial pressure influenced the process

Find out the correct answers from given statements.

Which of the following doesn’t occur during inspiration?

During inspiration, diaphragm_____ and_____ pressure develops in the lungs.

During one circuit of blood from lungs to the tissues and back through circulatory system, the percentage of haemoglobin giving up its oxygen to tissues is

Which of the following factors at tissue level favours dissociation of oxygen from oxyhaemoglobin

The most characteristic feature of haemoglobin is

In our tissue level, the dissociation of oxyhaemoglobin occurs due to:

Arrange the following events of respiration in proper sequence:

I. Breathing or pulmonary ventilation by which atmospheric air is drawn in and ${\mathrm{CO}}_2$ rich alveolar air is expelled out.

II. Diffusion of oxygen and carbon dioxide across the alveolar membrane.

III. Transport of gases by blood.

IV. Diffusion of oxygen and carbon dioxide across blood and tissue.

V. Utilisation of oxygen by the cells for metabolism and release of carbon dioxide.

In human body, rib-cage and sternum move upward and outward during

Nostril filter and cleans air to remove particles and allergens.

Write the functions of nostrils.

Explain the formation of oxyhaemoglobin.

Pharynx is part of the digestive and respiratory system.

Explain the process of inspiration of breathing.