The thick muscular structure which is present below the pair of lungs is known as:
Correct answer: B. Diaphragm
- A. Pharynx
- B. Diaphragm
- C. Bronchi
- D. None of these
Explanation
The diaphragm is a muscle that helps you inhale and exhale (breathe in and out). This thin, dome-shaped muscle sits below your lungs and heart. It's attached to your sternum (a bone in the middle of your chest), the bottom of your rib cage and your spine.
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About Respiration
The human respiratory system includes the air passages, lungs, alveoli and breathing muscles, while gaseous exchange explains how oxygen enters blood and carbon dioxide leaves it by diffusion. The effects of smoking include damage to cilia and alveoli, reduced gas exchange, chronic bronchitis, emphysema and increased risk of lung cancer.
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