The tonsils are lymphoid tissues located
- A. along the spinal cord
- B. in the thorax around the heart
- C. in the throat, guarding the entrances of the respiratory and digestive tracts
- D. inside the bone marrow
Explanation
Their position at the back of the mouth and nose lets them sample inhaled and swallowed material and mount early immune responses. This sentinel role explains why they swell during throat infections.