Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

Which of the following is TRUE regarding pancreatic somatostatin? A. Its secretion is increased by low blood glucose. B. It is always inhibitory. C. It is regulated by cortisol levels. D. It stimulates insulin and glucagon secretion.

Short Answer

Expert verified
B. It is always inhibitory.

Step by step solution

01

Identify the Function of Pancreatic Somatostatin

Pancreatic somatostatin is known to inhibit the secretion of several other hormones, including both insulin and glucagon. It regulates the endocrine system and works to reduce the rate of gastric emptying and gut motility.
02

Analyze Option A

Low blood glucose typically leads to an increase in the release of glucagon, not somatostatin. Therefore, this statement is false.
03

Analyze Option B

Pancreatic somatostatin inhibits the release of multiple hormones. Thus, it is known to be inhibitory, making option B true.
04

Analyze Option C

Cortisol levels influence many processes, but there is no direct regulatory effect of cortisol on somatostatin secretion. Therefore, this statement is false.
05

Analyze Option D

Somatostatin actually inhibits, rather than stimulates, the secretion of insulin and glucagon. Thus, this statement is false.

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 Vaia!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

hormone inhibition
Pancreatic somatostatin plays a critical role in hormone inhibition within the body. It is secreted by the delta cells of the pancreas and serves as a potent inhibitor of several other hormones. Specifically, somatostatin reduces the release of both insulin and glucagon, thus controlling their levels in the bloodstream. Additionally, it inhibits the release of growth hormone and thyroid-stimulating hormone (TSH) from the anterior pituitary gland.
By suppressing the secretion of these hormones, somatostatin helps maintain a balance in the body's metabolic functions. This inhibitory function is crucial, especially after meals, as it prevents the over-secretion of insulin and glucagon, thereby aiding in stabilizing blood glucose levels.
It's important to understand that the inhibition of these hormones by somatostatin is essential for finely tuned metabolic regulation. Without this inhibitory action, the body could experience volatile swings in hormone levels, leading to metabolic imbalances.
endocrine regulation
Endocrine regulation involves the intricate control of various hormonal secretions and their interactions within the body. Pancreatic somatostatin is a key player in this regulatory network. By controlling the release of insulin and glucagon, somatostatin regulates the body's glucose metabolism. This regulation is vital for maintaining energy homeostasis.
Furthermore, somatostatin plays a role in the digestive process. It slows down gastric emptying and decreases gut motility, allowing for better nutrient absorption. This action further integrates with the body’s overall metabolic regulation.
Other hormones that are regulated by somatostatin include growth hormone (GH) and thyroid-stimulating hormone (TSH). By inhibiting these hormones, somatostatin contributes to the overall balance of growth and metabolism in the body. This complex interplay ensures that the body's internal environment remains stable and functions optimally.
insulin and glucagon secretion
Insulin and glucagon are two primary hormones secreted by the pancreas with nearly opposite functions, yet they work together to regulate blood glucose levels. Insulin, produced by beta cells, decreases blood glucose levels by facilitating the uptake of glucose into cells. In contrast, glucagon, produced by alpha cells, increases blood glucose levels by stimulating the release of glucose from liver stores.
Pancreatic somatostatin inhibits the release of both insulin and glucagon. This inhibition prevents the sudden changes in blood glucose levels that can occur with rapid fluctuations in hormone release. As such, somatostatin ensures that the increase or decrease in glucose levels happens more gradually, allowing the body to adjust more smoothly.
By understanding the roles of insulin and glucagon, along with the inhibitive control by somatostatin, we gain a clearer picture of how our body maintains glucose homeostasis. This fine balance is crucial for energy production, metabolic health, and overall cellular function.

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

Which of the following statements concerning growth hormone is NOT true? A. Overproduction of growth hormone in adults results in acromegaly. B. It promotes growth of bone and muscle. C. It is secreted by the hypothalamus. D. A deficiency in growth hormone results in dwarfism.

Which of the following associations regarding aldosterone regulation is FALSE? A. Renin converts the plasma protein angiotensinogen to angiotensin I. B. Angiotensin I is converted to angiotensin II. C. Angiotensin II stimulates the adrenal cortex to secrete aldosterone. D. An increase in water reabsorption stimulates renin production.

A patient presents to your office with muscle weakness, slowness in movement, and calcium deposits on his bones. A blood test reveals very low calcium levels in the blood. What is one treatment option for your patient? A. Increase calcitonin levels B. Increase PTH levels C. Increase mineralcorticoid levels D. Increase growth hormone levels

Which of the following associations between the hormone and its role is FALSE? A. Estrogen-development of secondary sexual characteristics B. Progesterone-development and maintenance of endometrial walls C. LH-stimulate ovulation D. FSH-maturation of the ovarian follicles into the corpus luteum

Destruction of all beta cells in the pancreas would cause A. glucagon secretion to stop and a decrease in blood glucose. B. glucagon secretion to stop and an increase in blood glucose. C. insulin secretion to stop and an increase in blood glucose. D. insulin secretion to stop and a decrease in blood glucose.

See all solutions

Recommended explanations on English Textbooks

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.

Sign-up for free