Generate Quiz 6A85B879C4CE6

About 20–25% of CO2 is carried by red blood cells, while 70% is carried as bicarbonate. Approximately 7% of CO2 is transported through plasma in a dissolved state. The enzyme carbonic anhydrase is found in very high concentrations in red blood cells (RBCs), and trace amounts are also found in plasma. The following reaction is facilitated in both directions by this enzyme. As CO2 diffuses into blood (RBCs and plasma) at the tissue site where the partial pressure of CO2 is high because of catabolism, it forms HCO3 and H+. When this HCO3 reacts with Na+, sodium bicarbonate is created. The reaction proceeds in the opposite direction at the alveolar site where pCO2 is low, forming CO2 and H2O.

Compared to an equivalent volume of air, water contains less oxygen. Less than “10 ml” of oxygen are present in one liter of water.

The alveoli are where gaseous exchange takes place. Carbon dioxide travels from the blood in the capillaries to the air in the alveoli, while oxygen is inhaled from the alveoli to the blood in the capillaries. The airflow’s path is,
Nostrils>Larynx>Trachea>Bronchi>Bronchioles>Alveolar sacs>Alveoli.

One of the conditions that makes up COPD (chronic obstructive pulmonary disease) is emphysema. As emphysema progresses, lung tissue gradually deteriorates, particularly the alveoli (tiny air sacs) are destroyed.

Your lungs’ alveoli are tiny air sacs that absorb oxygen from the air you breathe and power your body. Alveoli are the backbone of your respiratory system despite their microscopic size. The lungs of humans contain an average of 480 million alveoli, which are found at the termini of bronchial tubes.

The larynx, also known as the voice box, is a component of the respiratory system that contains the vocal cords, two thin, fibrous bands. When air flows through the vocal cords, they vibrate, creating sound and enabling speech.

Myoglobin, also referred to as muscle hemoglobin, is a protein that is mostly found in striated muscle.

Air passes through your larynx (voice box), down your pharynx (back of your throat), and into your trachea (windpipe) when you breathe in through your mouth or nose. The two airways that make up your trachea are known as bronchial tubes. Your left lung is served by one bronchial tube, while your right lung is served by the other.

Since the trachea transports air from the larynx to the bronchi, it is also referred to as the windpipe. For this reason, Option D is the right response.