/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 14 Which of these hormones may have... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 11: Problem 14

Which of these hormones may have a primary role in many circadian rhythms? a. Estradiol b. Insulin c. Adrenocorticotropic hormone d. Melatonin

Short Answer

Expert verified
The correct answer is option d: Melatonin. This hormone plays a primary role in regulating many circadian rhythms, especially sleep-wake cycles, due to its direct influence on the biological clocks controlling these processes.

Step by step solution

01

Understanding Circadian Rhythms

Circadian rhythms are natural processes that regulate the sleep-wake cycle and repeat roughly every 24 hours. They are controlled by biological clocks in our body, which are affected by various factors such as light, temperature, and hormones.
02

Analyzing Option a: Estradiol

Estradiol is a type of estrogen, which is a female sex hormone. It plays an essential role in the development of female reproductive systems and secondary sexual characteristics. However, it does not directly regulate circadian rhythms.
03

Analyzing Option b: Insulin

Insulin is a hormone produced by the pancreas and plays a vital role in regulating blood sugar levels. Insulin allows our cells to use sugar for energy and helps balance energy storage within our bodies. While it's crucial for maintaining our overall well-being, it does not have a primary role in circadian rhythms.
04

Analyzing Option c: Adrenocorticotropic Hormone

Adrenocorticotropic hormone (ACTH) is produced by the pituitary gland and stimulates the release of cortisol from the adrenal glands. It helps our body react to stress and regulate metabolism. While ACTH does interact with the body's stress response system, it does not primarily regulate circadian rhythms.
05

Analyzing Option d: Melatonin

Melatonin is a hormone produced by the pineal gland, usually in response to darkness. Melatonin plays a significant role in helping our body regulate sleep-wake cycles by promoting sleep and controlling the timing of sleep. This hormone directly influences our circadian rhythms, making it a primary regulator of these processes.
06

Conclusion

Based on the roles and functions of each hormone, the correct answer is option d: Melatonin. It plays a primary role in regulating many circadian rhythms, especially sleep-wake cycles, due to its direct influence on the biological clocks that control these processes.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Suppose a drug blocks the conversion of \(\mathrm{T}_{4}\) to \(\mathrm{T}_{3}\). Explain what the effects of this drug would be on (a) TSH secretion, (b) thyroxine secretion, and (c) the size of the thyroid gland.

Distinguish between the genomic and nongenomic actions of steroid hormones. Which mechanism of action would be inhibited by a drug that interfered with protein synthesis? Explain.

If a person has a \(50 \%\) reduction in insulin sensitivity, what happens to insulin release for the person to remain in the normal curve?

Which of these statements about the hormone insulin is true? a. It is secreted by alpha cells in the pancreatic islets. b. It is secreted in response to a rise in blood glucose. c. It stimulates the production of glycogen and fat. d. Both \(a\) and \(b\) are true. e. Both \(b\) and \(c\) are true. Match the hormone with the primary agent that stimulates its secretion.

Describe the sequence of events by which a hormone can cause an increase in the \(\mathrm{Ca}^{2+}\) concentration within a target cell. How can this increased \(\mathrm{Ca}^{2+}\) affect the metabolism of the target cell?
See all solutions

Recommended explanations on Biology Textbooks

Reproduction

Read Explanation

Genetic Information

Read Explanation

Control of Gene Expression

Read Explanation

Ecology

Read Explanation

Ecosystems

Read Explanation

Cell Communication

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.