Describe the general neural framework for the control of eating in terms of feeding-facilitory and feeding-inhibitory circuits
What will be an ideal response?
Answer: No one area is the final controller of eating. Sensory and motor information from the
gut is sent to the brainstem, where basic feeding reflexes are controlled. Forebrain circuits arising from the lateral hypothalamus can act via MCH and orexins to facilitate eating, and this region appears to be sensitive to the orexigenic effects of NPY. Cells within the arcuate nucleus secrete both NPY as well as agouti-related peptide (AGRP), which acts as an antagonist at MC4- receptors that normally function to inhibit eating. Thus NPY and AGRP stimulate eating. A common finding is that a specific neuropeptide may exert dual actions; namely, facilitating actions in one pathway (e.g., MCH/orexin) and inhibiting activity in the other pathway (e.g., NPY/AGRP). Leptin can inhibit NPY activity and can activate cells that express CART.
You might also like to view...
Selective serotonin reuptake inhibitors operate similarly to ____
a. tricyclics b. MAOIs c. Antabuse d. L-Dopa
Men are more likely to have artistic and social personalities
a. True b. False Indicate whether the statement is true or false
Some people with psychological disorders believe in ideas of persecution. They might fear that the FBI is after them. Which criteria of psychological disorders is reflected here?
A) Claustrophobic behavior B) Feeling of ecstasy for no apparent reason C) Faulty perception or interpretation of reality D) Acrophobic behavior
An individual may be a(n) ____________________ if he has limited intellectual and social functioning, but has a tremendous gift in a particular domain, such as art, music, or keeping track of the events occurring on specific dates
Fill in the blank(s) with correct word