Question

The neurotransmitter orexin increases right before waking and is involved in maintaining wakefulness and appetite throughout the day. If a tumor occurs in the hypothalamus that causes an increase in orexin, you would expect an individual to:

A) Have difficulty falling asleep and decreased appetite
B) Have increased appetite and difficulty falling asleep
C) Have difficulty staying awake and decreased appetite
D) Have difficulty staying awake and increased appetite

Answer 1

A tumor in the hypothalamus that causes an increase in orexin would result b. in difficulty staying awake and increased appetite.

Step-by-step explanation:

If a tumor occurs in the hypothalamus that causes an increase in orexin, you would expect an individual to have b. difficulty staying awake and increased appetite.

Orexin is a neurotransmitter that is involved in maintaining wakefulness and appetite throughout the day. An increase in orexin levels would lead to difficulty staying awake as orexin promotes wakefulness. Additionally, orexin is also involved in appetite regulation, so an increase in orexin would result in increased appetite.