1. _______ is also known as 'voice box'.   Hint First letter clue   2. _______ is the opening in the body through which feces are excreted.   First letter clue   3. A healthy human adult has _______ bones.   First letter clue   4. Heart lies on the left side of the _______ cavity.   First letter clue   5. Salivary glands secrete a fluid known as _______ which helps in digestion as well as in swallowing of food.   First letter clue   6. Blood is returned to the heart from various body parts through blood vessels known as _______.   First letter clue   7. Oral cavity remains moist due to presence of a fluid known as _______.   First letter clue   Skip to Diagrammatic repr... ⇒