Question

1. Why do you cry if you have canals that drain tears into the nasal cavity?

2. How would a person’s vision be affected by retinal detachment from the choroid coat? Why?

3. Which of our taste receptors (sweet, salty, bitter, acid or umami) do you think is the most sensitive? Why do you think we are most sensitive to this taste?

4. A researcher accidently pipetted HCl into his mouth. He was unable to taste food for about two months.

a. What was destroyed by the HCl?

b. Why did the sensation of taste return?

5. Otitis media (middle ear infection) is sometimes associated with pharyngitis (sore throat). Explain why this is so.

6. People don’t wear sunglasses often experience UV damage to the eyes. A possible result in the development of a pterygium. What is this? How is it treated?

Answer 1

1) Tears are important to maintain the moisture & health of the eyes. The lacrimal glands within the eyelids produces tears. The excess tears is what that gets drained into the nasolacrimal duct from the eyes through the upper & lower puncta, which are located at interior corner of the upper & lower eyelids. Each eye has a lacrimal gland, located above the eyes. The glands are located under the upper outer orbit. The tear produced from this region where the glands are located, flows across the eyes & drain through the punctum which is located at interior corner of the eyelids.

hope it helps.