Question

4. Dr. Ahmed will use a(n) _____, or a three dimensional map of the brain, and a computer, to make sure the electrode is place in the correct location in the rat.
a. hemispheric atlas
b. stereotaxic atlas
c. hemispheric guide
d. stereotaxic guide

5. A rat that will starve if not force fed is produced by:
a. stimulating the ventromedial hypothalamus.
b. destroying the ventromedial hypothalamus.
c. destroying the lateral hypothalamus.
d. stimulating the lateral hypothalamus.

6. Research suggests that the lateral and ventromedial hypothalamus:
a. are a self-contained network that controls hunger and satiation.
b. are the hunger and satiation regions of the brain respectively.
c. are part of a larger brain network that controls eating behavior.
d. are the satiation and hunger regions of the brain respectively.

7. After a time, rats who have had their lateral or ventromedial hypothalamus destroyed:
a. begin to lose weight if they initially gained weight, or gain weight if they initially lost weight.
b. establish a new set point for their weight.
c. die from problems with food consumption despite interventions from caregivers.
d. return to their pre-surgery weight.

8. When studying motivated behavior, including eating, rats can be used to predict human behavior because the _____ in a rat’s brain is similar to that of a human.
a. frontal lobes and parietal lobes
b. pons and cerebellum
c. lateral hypothalamus and ventromedial hypothalamus
d. pituitary gland and the thalamus

9. Researchers usually study activity in the hypothalamus by:
a. studying PET Scans of the hypothalamus in rats.
b. implanting electrodes in the brains of rats.
c. studying PET Scans of the hypothalamus in humans.
d. implanting electrodes in the brains of humans.

10. A rat in an experiment has started eating more food. What have experimenters likely done to the rat?
a. they have destroyed the lateral hypothalamus or destroyed the ventromedial hypothalamus.
b. they have destroyed the lateral hypothalamus or stimulated the ventromedial hypothalamus.
c. they have stimulated the lateral hypothalamus or stimulated the ventromedial hypothalamus.
d. they have stimulated the lateral hypothalamus or destroyed the ventromedial hypothalamus.

Answer 1

b. stereotaxic atlas

Dr. Ahmed will use a stereotaxic atlas, or a three-dimensional map of the brain, and a computer, to make sure the electrode is placed in the correct location in the rat. A stereotaxic atlas is a number of records of brain structure of a particular animal.

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c. destroying the lateral hypothalamus.

The lateral hypothalamus is a part of the hypothalamus, which is a part of the brain. This part regulates the vital functions, such as body temperature, the hunger and satiation regions and so on. Some eating disorders and motility disorders are being associated with some dysfunctions of the hypothalamus.

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b. are the hunger and satiation regions of the brain respectively.

The lateral and ventromedial hypothalami are the hunger and satiation regions of the brain respectively. They are both parts of the hypothalamus, which is a part of the brain located near the amygdala. All vertebrates have a hypothalamus, and in humans, it has the size of an almond.

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a. begin to lose weight if they initially gained weight, or gain weight if they initially lost weight.

Rats who have had their lateral or ventromedial hypothalamus destroyed, begin to lose weight if they initially gained weight, or gain weight if they initially lost weight. That is because their lateral or ventromedial hypothalamus is the part of the brain that regulates hunger and satiation.

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c. lateral hypothalamus and ventromedial hypothalamus

When studying motivated behavior, including eating, rats can be used to predict human behavior because the lateral hypothalamus and ventromedial hypothalamus in a rat’s brain is similar to that of a human. So, they are very suitable for this type of study.

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d. they have stimulated the lateral hypothalamus or destroyed the ventromedial hypothalamus.

When a rat in an experiment has started eating more food, the cause it is likely to be that has stimulated the lateral hypothalamus or destroyed the ventromedial hypothalamus, since these regions are the part of the brain that regulates hunger and satiation, therefore a stimulus or a removal could affect the rat in those ways.