Vocal cords are bands stretched across the mucous membrane in the glottis,
Correct answer: B. Two thin edges fibrous
- A. Two thick edge cartilaginous
- B. Two thin edges fibrous
- C. Two thin edge muscular
- D. Two pairs of thick edge fibrous
Explanation
The vocal cords are composed of two thin edges made of fibrous tissue. These fibrous edges vibrate when air passes through them, producing sound.
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The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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