Need help with the following four questions: 1. You have been sitting next to a

Question

Need help with the following four questions:

1. You have been sitting next to a fire-pit for warmth and the smoke decides to follow you. After several minutes of being smoked out, your eyes become blood-shot. What layer of your eye has experienced vasodilation?

2. The iris functions as a diaphragm. When the smooth muscles associated with the iris contract, the diameter of the _______ will increase or decrease.

3. What happens to your ability to hear when there is an increase in pressure within the Pharyngotympanic tube?

4. What structure of the inner ear is responsible for your ability to maintain balance while spinning in circles?

Explanation / Answer

1. The conjunctiva becomes vasodilated as a result of sitting near the fire pit.

2. When the smooth muscles associated with the iris contract, the diameter of the pupil will increase or decrease.

3. hearing is impaired due to increase in pressure within the pharyngotympanic tube.

4. The semicircular canals are responsible for maintaining balance while spinning in circles.

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