46. Sensory Systems

Although we often assume that our sense organs are reporting a complete picture of the world to our brains, in fact the world is full of stimuli (very low frequency sound, cosmic rays, electrical fields, etc.) that our sense organs cannot detect. This situation is best characterized as a failure of our sense organs to do what to these stimuli?

You look all over for your glasses and then find them pushed back onto your forehead. This error could be attributed to __________.

A fish detects vibrations in the water around it by means of its lateral lines, rows of sensory receptors along each side of the body. Based on what you know about sensory receptors, the lateral line receptors are probably which of the following?

If we wait too long between meals, our blood glucose levels drop. Which receptors will respond to this decrease in blood glucose?