Students will be prevented from enrolling in a course for a third (or subsequent) time unless re-enrollment is approved by the college of the studentâs major. If you have questions about how the course repeat policy may affect you, contact the Registrar's Office; 812-464-1761 or 800-467-1965. Hours: Monday - Friday.
A tympanostomy tube (also known as a grommet, T-tube, ear tube, pressure equalization tube, vent, PE tube or myringotomy tube) is a small tube inserted into the eardrum in order to keep the middle ear aerated for a prolonged period of time, and to prevent the accumulation of fluid in the middle ear.hen it is necessary to keep the middle ear ventilated for a very long period, a T-shaped tube may be used, as these T-tubes can stay in place for 2-4 years. Materials used to construct the tube are most often plastics such as silicone or Teflon. Stainless steel tubes exist, but are no longer in frequent use.
The tympanid membrane is the eardrum of the frog. It vibrates and lets the frog know danger is near. The frog will use it's own croak, song, or peep to (echo) bounce sound off â¦ of trees, rocks, sticks or other things and the frog will instantly know if a predator is close if something seems amiss.t sweeps and cleans the eye of debris. It also allows the frog to see clearly under water by shielding the eyes (similar to swimming goggles over one's eyes).