PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the primary muscle used in the process of inspiration. A dome shaped muscle.
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the tube that takes air into the chest, also known as the windpipe.
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tiny sacs at the end of the bronchioles, where gaseous exchange takes place.
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a type of protein found in every red blood cell.
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Detailed explanation-1: -The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.
Detailed explanation-2: -Action: diaphragm is the main inspiratory muscle, during inspiration it contracts and moves in an inferior direction that increases the vertical diameter of the thoracic cavity and produces lung expansion, in turn, the air is drawn in.
Detailed explanation-3: -The diaphragm has a dome-like structure with the peripheral segment attached to the chest wall and abdominal cavity. The muscle fibers from these attachments converge in a central tendon, which forms the crest of the dome.
Detailed explanation-4: -The diaphragm muscle is of the skeletal or striated type and is the major muscle of ventilation. Accessory muscles of ventilation include the scalene, the sternocleidomastoid, the pectoralis major, the trapezius, and the external intercostals.