Which hormone acts antagonistically to insulin

There are two main types of thyroid hormones: T3 and T4 or thyroxine. Both hormones contain iodine atoms T3 contains three and T4 contains four and both are essential in order to maintain basal metabolic rate.

Since the doctor observed a decrease in iodine concentration, the patient must experience a decrease in the production of functional thyroxine. Glucose concentration does not depend on iodine; therefore, an increase or decrease in glucose concentration in blood is irrelevant to this question. Thyroid-stimulating hormone TSH is a peptide hormone released by the anterior pituitary gland. Its main function is to stimulate the thyroid gland to release T3 and T4.

Iodine atoms are not necessary for the proper functioning and production of TSH. A patient is admitted to the hospital after a traumatic injury to her adrenal cortex. Which of the following hormones is most likely to be present at normal levels? Of all the hormones listed, antidiuretic hormone ADH is the only one that neither acts on, nor is released by, the adrenal cortex. ADH is released from the posterior pituitary and causes the kidneys to retain more water.

Aldosterone a mineralcorticoid and cortisol a glucocorticoid are both incorrect choices because they are released by the adrenal cortex and would be greatly affected by trauma to that area. ACTH is released by the anterior pituitary and acts to stimulate the adrenal cortex; these hormones act as part of a negative feedback chain, so damage to the target area would temporarily cause more ACTH to be produced.

Endocrine glands secrete hormones into the blood stream, lined with endothelium, allowing them to travel through the blood and to act at a distant site. Exocrine organs, in contrast, secrete products into lumens that are lined with epithelium.

Mammary glands are used in lactation. Because the milk is not secreted into the blood, the mammary glands are not endocrine glands. The hypothalamus releases hormones into the blood, such as corticotropin-releasing hormone CRH. The pituitary releases hormones such as prolactin. The adrenal gland secretes hormones such as cortisol. If you've found an issue with this question, please let us know.

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Hanley Rd, Suite St. Louis, MO Subject optional. Email address: Your name:. Which of the following is not a function of the endocrine system? Possible Answers: Pancreatic secretions to the intestine. Hypothalamic secretions to the anterior pituitary. Correct answer: Pancreatic secretions to the intestine.

Explanation : The endocrine system involves secretions by ductless glands into the bloodstream. Report an Error. Possible Answers: Only hormone A can dissolve in water.

Both hormone A and hormone B can dissolve in water. Both hormone A and hormone B cannot dissolve in water. Correct answer: Only hormone A can dissolve in water. Explanation : The question states that both hormone A and hormone B act on the collecting ducts of the kidneys.

Which of the following is false regarding insulin and calcitonin? Insulin functions to decrease glucose concentration in blood, whereas calcitonin functions to increase calcium concentration in blood II.

They are antagonistic hormones III. Insulin and calcitonin can only act on cells near their respective glands. Possible Answers: I only.

Explanation : Insulin is released into the blood from the pancreas and functions to decrease the glucose concentration in the blood. The beta cells of the islets of Langerhans secrete which of the following hormones? Possible Answers: Glucagon. Correct answer: Insulin. Explanation : Insulin is secreted by the beta cells of the islets of Langerhans in the pancreas in response to high blood glucose levels. Which of the following might explain type I diabetes, also known as juvenile diabetes?

Possible Answers: Consumption of a severely calorie-restricted diet during the first few years of life. Consumption of a high-caloric diet over a number of years. The counterregulatory hormones glucagon, adrenaline, cortisol and growth hormone are released during hypoglycaemia, and under other stress conditions.

These hormones have insulin-antagonistic effects both in the liver and in the peripheral tissues. The insulin-antagonistic effects of glucagon and adrenaline are of rapid onset, whereas those of cortisol and growth hormone are only observed after a lag period of several hours. Glucagon is the most important hormone for acute glucose counterregulation.

Phenylalanine C. Histidine D. Tryptophan Views. The question have been saved in answer later, you can access it from your profile anytime. Access now. Your report is submitted, the author will be informed about it. Question Followers. Report Question. Can be made better Question lacks the basic details making it difficult to answer. Spam Question drives traffic to external sites for promotional or commercial purposes. Irrelevant The Question is not relevant to User.

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