Every day at 9:30 pm Heather begins to get drowsy and very relaxed. Heather's body has most likely increased her production of which chemical?Single choice
A
Seratonin
B
Melatonin
C
Pinealtonin
D
SCN

Question

Every day at 9:30 pm Heather begins to get drowsy and very relaxed. Heather's body has most likely increased her production of which chemical?

BlackTom AI · Accepted Answer

The scenario describes Heather becoming drowsy and very relaxed at a consistent evening time, which points to the body's circadian regulation of sleep. 
Option 1: Seratonin (typo for serotonin) is a neurotransmitter involved in mood and some other functions, and while it is a precursor to melatonin, the question asks which chemical has increased to cause the drowsiness itself. It is more accurate to attribute the sleepiness to melatonin rather than serotonin directly. 
Option 2: Melatonin is the hormone produced by the pineal gland, typically released in higher amounts in darkness to promote sleepiness and help regulate sleep-wake cycles. Evening or nighttime increases in melatonin align with Heather’s description, making this the correct choice. 
Option 3: Pinealtonin appears to be a nonstandard or incorrect term; there is no widely recognized chemical by that name related to sleep regulation, so this option can be dismissed as inaccurate. 
Option 4: SCN refers to the suprachiasmatic nucleus, a brain region that acts as the master circadian clock and helps regulate melatonin production, but it is not a chemical itself. Since the question asks for the chemical increased, SCN is not the correct answer. 
In summary, the behavioral cue of evening drowsiness aligns with elevated melatonin production by the pineal gland, modulated by the SCN, whereas the other terms either describe a different neurotransmitter, an incorrect term, or a brain structure rather than a chemical.

Every day at 9:30 pm Heather begins to get drowsy and very relaxed. Heather's body has most likely increased her production of which chemical?Single choice

Similar Questions

Question at position 18 Which structure releases melatonin? Suprachiasmatic nucleusPineal glandAdrenal glandPituitary glandClear my selection

Exposure to bright light causes the

Which ONE of the following thalamic nuclei is targeted by the trigeminothalamic tract?

Which ONE of the following is disinhibited in the direct pathway of the basal ganglia motor loop

30. What is the main purpose of the lecture?

Section FChoose a, b or c as the best answer.29. Which statement is the speaker most likely to agree with?

28. 15-minute neighbourhoods provide residents with inexpensive ____ .

27. ____ % of global car ownership is in the U.S.A.

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler