FORESTRY
PLANT AND WOOD ANATOMY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
You are learning about inspirations and expirations. Which of them is considered passive?
|
|
Inspirations
|
|
|
Expirations
|
|
|
Either A or B
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -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.
Detailed explanation-2: -Exhalation is passive (no active muscle activity) and is caused by the natural elastic recoil of the lung tissue and is accompanied by the relaxation of all breathing muscles.
Detailed explanation-3: -Exhalation is defined as a passive process due to the elastic features of the lungs. During the event of exhalation, the diaphragm starts to relax and moves upward of the thoracic cavity. The pressure inside the thoracic cavity increases concerning the environment. As a result, air moves out from the lungs.
There is 1 question to complete.