The correct answer is <em></em>ii.
The pharyngotympanic tube or else eustachian tube is a structure of the middle ear, which connects the nasopharynx with the middle ear. The function of this structure is to equalize the pressure and drain the mucus produced by the middle ear.
Answer:
c. Platelets
Explanation:
In response to a damaged blood vessel signal, platelets which are part of blood components, moves to the site of injury. They clump together and form hemostatic plugs (blood clotts) to stop bleeding.
