0
What else can I help you with?
What is a special feature of the alveolus?
Well the alveolus has a large surface area that helps with diffusion rate. It also have thin walls and shape. Done by: Candy
What is the lipophobic molecule that interacts with receptors on cell surface?
Peptide Hormone. If you are using Mastering A and P and have to manually type the answer, then make sure that your answer is submitted such that the multiple choice letter comes first. Ex: A, peptide hormone
What term does down-regulation refer to?
Down-regulation refers to the process by which a cell decreases the number of receptors on its surface in response to high levels of a specific signaling molecule. This reduces the cell's sensitivity to the signaling molecule.
What would a glandular structure that has three ducts and flasklike sacs be termed?
This is a multicellular exocrine gland. It is also a compound alveolar (or ascinar) type.
Is a molecule of water 'wet' like a puddle is wet?
No. the puddle itself is not wet. A puddle of water is considered wet because when you put something in it (your shoe, your newspaper, your mcmuffin) it comes out wet. a molecule of water is too small to moisten anything large enough so that we can have a wet/dry comparison.
What is the name for this movement of gasses at the surface of the alveolus?
respiration
What is the name for the movement of gases at the surface of an alveolus?
this is called respiration
What is a special feature of the alveolus?
Well the alveolus has a large surface area that helps with diffusion rate. It also have thin walls and shape. Done by: Candy
What is th adaptations of the alveolus that allow it to carry out its functions?
There are two things. One is that the cell of alveolus is flat and thin walled. That makes the transfer of the gases easier. secondly the number of alveoli is very high. That increase the surface area to the great extent. The total surface area of the alveoli is about 1100 square feet.
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.
One reason why it is easy for gases to pass across the walls of the alveolus?
The walls of the alveolus are very thin, allowing gases to easily diffuse across them. Additionally, the alveoli are surrounded by a dense network of capillaries, increasing the surface area available for gas exchange.
Where air and blood are found in the lungs?
You have blood and air, very close to each other in alveolus of the lungs. They are separated by single flat epithelium of the capillary on one hand and single flat epithelium of the alveolus on another hand. Interestingly, the surface area of this transfer is about 1000 square feet.
What happens if a molecule with a high kinetic energy happenes to be close to the liquid's surface?
Then that molecule will escape the surface of the liquid and become a molecule of gas. This is the process by which water slowly evaporates even when not heated.
Why is it easy fot gases to pass across the wall of an alveolus?
Gases can easily pass across the wall of an alveolus due to its thin and moist membrane that allows for rapid diffusion of oxygen and carbon dioxide. Additionally, the large surface area of alveoli allows for efficient exchange of gases between the lungs and bloodstream.
Name the respiratory surface in the lungs?
Respiratory surface is the region where gaseous exchange occur. It includes respiratory bronchiole, alveolar duct and alveolus. Large surface surface is needed the increase the diffusion rate of gaseous. Respiratory surface also exhibit other properties such as moist and only one-cell thick. Nika G.
Why the alveolus has adopted this characteristics?
The alveolus has adapted its characteristics, such as its thin walls and large surface area, to enhance gas exchange efficiency. The thin walls reduce the distance for oxygen and carbon dioxide to diffuse, while the extensive surface area allows for a greater volume of gas exchange. Additionally, the moist environment within the alveoli facilitates the diffusion of gases. These adaptations are crucial for meeting the high metabolic demands of the body.
What is emphysma?
By smoking, the wall of alveolus becomes thin, so it will be damaged with continuous coughing that decreases the surface area of exchanging gases, by this way, the smoker suffers from shortage of oxygen.
