1. A healthy human adult has _______ bones.   Hint First letter clue   2. Heart lies on the left side of the _______ cavity.   First letter clue   3. Bronchi are _______ in number.   First letter clue   4. Food descends from the mouth to the stomach through a muscular tube known as _______.   First letter clue   5. Oral cavity remains moist due to presence of a fluid known as _______.   First letter clue   6. _______ is also known as 'voice box'.   First letter clue   7. Salivary glands secrete a fluid known as _______ which helps in digestion as well as in swallowing of food.   First letter clue   Skip to Diagrammatic repr... ⇒