NEET PG DENTAL EXAM

EMBRYOLOGY

RESPIRATORY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Respiration is defined as
A
amount of air inspired and expired with each normal breath during rest or exercise.
B
is the greatest amount of air that can be made to pass into and out of the lungs by the most forceful inspiration and expiration.
C
the delivery of oxygen from the lungs to the bloodstream and the removal of carbon dioxide from the tissues.
D
the movement of air from outside the body into the cells within tissues.
Explanation: 

Detailed explanation-1: -In physiology, respiration is the movement of oxygen from the outside environment to the cells within tissues, and the removal of carbon dioxide in the opposite direction that’s to the environment.

Detailed explanation-2: -Inspiration (inhalation) is the process of taking air into the lungs. It is the active phase of ventilation because it is the result of muscle contraction. During inspiration, the diaphragm contracts and the thoracic cavity increases in volume.

Detailed explanation-3: -The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.

Detailed explanation-4: -Respiration is the transport of oxygen to the cells within tissues and the transport of carbon dioxide in the opposite direction.

There is 1 question to complete.