Exam 39: The Senses

Imagine that the eye functions like a digital camera and that the quality of the image is related to the number of pixels, with more pixels providing better resolution. Which of these animals has an eye with the best resolution (the most "pixels")?

The perception of sound depends on:

Which of the following respond to rapid vibrations or a sharp poke?

Which mechanoreceptors are nearest the surface of the epidermis and respond to light touch?

There are ________ distinctly different tastes that stimulate receptors on the human tongue.

A reflective choroid is most typical of a:

How many taste buds are on the human tongue?

Which of these structures can be swiveled around in some animals to better locate a sound?

Optometrists, who help patients with their vision problems, know that certain types of repetitive use of the muscles around the lens of the eye can "train" the lens to become fatter than normal. This often occurs in truck drivers, sailors, and other people who focus on the horizon or at great distances for long periods of time. Based on this figure, which of the following would be the consequence of this, and what shape of contact lens (or lens in eyeglasses)would be prescribed?

If you could monitor the activity from the photoreceptors of rods and cones in the retina during a dream, would you expect these cells to be producing electrical signals? Why?