ENDOCRINE ORGANS AND RESPIRATORY SYSTEM
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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diaphragm contracts downward
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rib cage expands
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volume of lungs increases
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rib cage contracts
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Detailed explanation-1: -So the correct answer is ‘Relaxation of phrenic muscles and Relaxation of external intercostal muscles ‘.
Detailed explanation-2: -Hence, the correct answer is ‘Brings the air to body temperature’
Detailed explanation-3: -Breathing in When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
Detailed explanation-4: -Which of the following does NOT happen during inspiration? ANSWER: Option (B)-The diaphragm lifts up.
Detailed explanation-5: -The correct answer is a) external oblique. The external oblique muscles are not involved in inhalation (inspiration). In normal breathing, the diaphragm and external intercostal muscles contract, which increases the thoracic and lung volume, decreases intrapulmonary pressure, and air flows into the lungs.