NEET PG DENTAL EXAM

EMBRYOLOGY

RESPIRATORY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The main function of the respiratory system is to supply the body with oxygen and to expel carbon dioxide. Which statement explains how the respiratory system coordinates with the circulatory system when performing this function?
A
Both systems ensure that every cell has equal concentrations of oxygen and carbon dioxide.
B
Both systems ensure that oxygen is inhaled and delivered to cells, and carbon dioxide is removed from cells by the bloodstream and lungs.
C
Both systems ensure that carbon dioxide reaches the bloodstream, and oxygen is removed from the bloodstream.
D
Both systems ensure that every cell has a higher concentration of carbon dioxide and a lower concentration of oxygen.
Explanation: 

Detailed explanation-1: -The respiratory system works with the circulatory system to provide this oxygen and to remove the waste products of metabolism. It also helps to regulate pH of the blood. Respiration is the sequence of events that results in the exchange of oxygen and carbon dioxide between the atmosphere and the body cells.

Detailed explanation-2: -The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation).

Detailed explanation-3: -At the end of each bronchiole are tiny air sacs called alveoli. This is the place where the exchange of oxygen and carbon dioxide actually happens. Each person has hundreds of millions of alveoli in their lungs. This network of alveoli, bronchioles, and bronchi is known as the bronchial tree.

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