Intercostal muscles are found in:
Correct answer: A. Ribs
- A. Ribs
- B. Pharynx
- C. Lungs
- D. Both B and C
Explanation
The ribs are supported by intercostal muscles which form the walls of the thoracic cavity and also move the ribs during breathing.
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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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