6.2 End of Module Quiz

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The vestibular system is responsible for which of these observations about behavior?

- Foods have stronger taste while they are hot than while the same foods are cold.
- You can localize sounds well in the air, but poorly when you are under water.
- You can describe the positions of your hands and feet without looking at them.
- You can read a page better while shaking your head than while shaking the page.

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Terms in this set (11)

- You can read a page better while shaking your head than while shaking the page.

Under which of these circumstances would the semicircular canals respond most vigorously?

- When you are lying in an unusual, uncomfortable position
- When you are moving at a slow, steady speed
- When you are moving at a rapid, steady speed
- When you are moving and changing speed

- When you are moving and changing speed

To what extent does the nervous system maintain separate representations of touch, heat, pain, and other aspects of somatic sensation?

- Not at all. A single kind of receptor responds to all kinds of somatic sensation.
- The receptors vary, but all kinds of sensation merge in the spinal cord.
- The spinal cord maintains separate representations, but the various types merge in the cerebral cortex.
- Different types of sensation remain separate even in the cerebral cortex.

- Different types of sensation remain separate even in the cerebral cortex.

In which of these ways do coldness receptors differ from heat receptors?

- Coldness receptors respond to a change in temperature, not to the absolute temperature.
- The response of a coldness receptor grows stronger and stronger until you find a warmer place.
- Coldness receptors also respond to certain chemicals, whereas heat receptors do not.
- Coldness receptors respond only to life-threatening levels of cold.

- Coldness receptors respond to a change in temperature, not to the absolute temperature.

What does the anterior cingulate cortex contribute to both the sense of touch and the sense of pain?

- It responds to an increase or decrease of the sensation, not the absolute level.
- It responds to the emotional aspect of the sensation.
- It stores a memory of the sensation.
- It compares touch or pain to visual and auditory sensations.

- It responds to the emotional aspect of the sensation.

Suppose you suffer a cut through the spinal cord on the left side only. For the part of the body below that cut, you will lose pain sensation on the right side of the body and touch sensation on the left side. Why?

- The left side of the body is more sensitive to pain than the right side is.
- The right side of the body is more sensitive to pain than the left side is.
- Pain axons cross the spinal cord at once, but touch fibers do not.
- Pain axons regrow after injury, but touch axons do not.

- Pain axons cross the spinal cord at once, but touch fibers do not.

Certain drugs that relieve pain also relieve which of the following?

- Itch
- Attention deficit disorder
- Hurt feelings
- Narcolepsy

- Hurt feelings

In what way does pain relief by cannabinoids differ from pain relief by opiates?

- Cannabinoids act on the periphery, not the brain.
- Cannabinoids produce no unwanted side effects.
- The benefits of cannabinoids are mostly placebo effects.
- Cannabinoids act mainly by effects on the medulla.

- Cannabinoids act on the periphery, not the brain.

Do placebos relieve pain just by relaxation? And what is the evidence?

- Yes. People who are already relaxed gain no benefits from placebos.
- Yes. Placebos are effective only for people who are high in neuroticism.
- No. A placebo can relieve pain in one body part without affecting another.
- No. People who take a placebo become even more nervous than before.

- No. A placebo can relieve pain in one body part without affecting another.

Why do many people suffer chronic pain long after an injury has healed?

- The brain has learned to increase its pain perception.
- The skin exhausts its supply of histamine.
- They took morphine too soon after a surgical operation.
- The blood flow to the injured area did not increase.

- The brain has learned to increase its pain perception.