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What sequence correctly shows the path of carbon dioxide during respiration?
External respiration is the exchange of oxygen and carbon dioxide between the lungs, body and the outside environment; the breathing process known as inhalation and exhalation. Upon inhalation, air enters the body and is warmed, moistened, and filtered as it passes to the alveoli of the lungs. Oxygen diffuses from the alveoli to the bloodstream, then into the red blood cells. Simultaneously, carbon dioxide in the blood is diffused from the blood to the alveoli, and exhalation expels the carbon dioxide from the alveoli.
What cells secrete surfactant that reduces the tendency for pulmonary alveoli to collapse?
Type II alveolar cells in the lungs secrete surfactant, which is a specialized fluid that lowers surface tension in the alveoli. This reduces the tendency for the alveoli to collapse during exhalation and helps maintain the elasticity of the lungs for efficient gas exchange.
Why are the walls of the alveoli one cell thick?
The reason for this is that oxygen and carbon dioxide need to diffuse through this membrane very quickly to re-oxygenate the blood. The thicker the barrier, the longer the process, and since breathing is rather rapid it needs to happen fast.
What is the function of the surface of fluid lining the alveolar?
The fluid lining the inner alveolar membrane is called surfactant. It helps reduce the surface tension in the alveoli, which prevents them from collapsing in on themselves every time we exhale.
The lining of the alveolus is coated with an oily secretion called?
The lining of the alveolus is coated with a surfactant composed of phospholipids and proteins. This surfactant helps reduce surface tension, preventing the collapse of the alveoli during exhalation, and aids in the exchange of gases in the lungs.
The surface tension exerted by water in the alveoli prevent collapse of the alveoli during exhalation?
False
What is a hyper aerated?
or hyperinflation it is where the lung volume is abnormally increased with increased filling of alveoli.
Why do alveoli die in emphysema?
Destruction of alveoli reduces the surface area for gas exchange
What disease is referred to the destruction of the alveoli?
Emphysema.
The lipoprotein film covering the alveoli serves to what?
The lipoprotein film covering the alveoli serves to reduce surface tension, preventing the collapse of the alveoli during exhalation and promoting efficient gas exchange in the lungs.
How can air pollution cause emphysema?
The dust particles comes from air pollution and the concentration of carbondioxide is higher in it...so,when they enter in human body it start the destruction of the walls of alveoli...and the low concentration of oxygen disturb the gaseous exchange between alveoli and the capillries... By this exhalation process can't be done..In sever cases it can cause death...
What sequence correctly shows the path of carbon dioxide during respiration?
External respiration is the exchange of oxygen and carbon dioxide between the lungs, body and the outside environment; the breathing process known as inhalation and exhalation. Upon inhalation, air enters the body and is warmed, moistened, and filtered as it passes to the alveoli of the lungs. Oxygen diffuses from the alveoli to the bloodstream, then into the red blood cells. Simultaneously, carbon dioxide in the blood is diffused from the blood to the alveoli, and exhalation expels the carbon dioxide from the alveoli.
How does air move into the lungs during exhalation?
Nasal cavity Pharynx Larynx Trachea Bronchus Bronchioles Alveoli
What is the function of type 2 alveoli walls?
Type 2 alveoli cells secrete surfactant, which helps to reduce surface tension in the alveoli. This allows for easier expansion of the alveoli during inhalation and prevents them from collapsing during exhalation, promoting efficient gas exchange.
Air is expelled from the alveoli during exhalation due to the effects of?
Air is expelled from the alveoli, as well as the lungs in general, during exhalation when the diaphragm relaxes and rises up. This creates pressure on the thoracic cavity, and since there is more air pressure inside than outside, the air is exhaled to relieve the pressure.
What is the destruction of alveoli due to age or by respiratory irritants called?
emphysema
What happens to the carbon dioxide in the blood when it flows through the capillares in the aveoli?
CO2 diffuses from the blood to the alveoli and the exhalation removes the CO2 from the body.
