Which of the following is an example of antagonistic hormones that control homeostasis?
Glucagon and Insulin Insulin and glucagon are antagonistic hormones. Alpha cells secrete glucagon, beta cells secrete insulin. Glucagon facilitates the release of glucose into the bloodstream from the stored glycogen through a process of signal transduction.
What are antagonistic hormones examples?
Antagonistic hormones are a pair of hormones that have the opposite effects. For example, insulin and glucagon are antagonistic hormones because insulin functions to decrease blood glucose levels, whereas glucagon functions to increase blood glucose levels.
What hormone controls homeostasis?
Two of the key hormones involved in regulating this process are insulin, which controls uptake of glucose by different cells, and glucagon, which controls release of glucose from stores within the body.
What are the antagonistic effects of hormones?
Hormones, which produce opposite effects, are called antagonistic. Insulin and glucagon are classic examples of antagonistic hormones. Insulin stimulates glycogenesis, i.e. conversion of glucose to glycogen, whereas glucagon stimulates glycogenolysis, i.e. conversion of glycogen to glucose.
Is relaxin and inhibin antagonistic?
Explanation: Relaxin and Inhibin are not antagonistic and have different functions. Relaxin is secreted by the placenta and ovaries. It relaxes pelvic ligaments and widens the cervix at the time of childbirth.
Are epinephrine and norepinephrine antagonistic hormones?
Noradrenaline is responsible for increased heart rate, widening of the pupil, and an increase in blood pressure. So, adrenaline and noradrenaline are not antagonistic in function. Hence option C is the right answer. Note: The antagonistic hormones are responsible for maintaining homeostasis of the body.
Are epinephrine and cortisol antagonistic hormones?
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.
What regulates homeostasis in the body?
The endocrine and central nervous systems are the major control systems for regulating homeostasis (Tortora and Anagnostakos, 2003) (Fig 2). The endocrine system consists of a series of glands that secrete chemical regulators (hormones).
What part of the body controls homeostasis?
All humans and many animals have a hypothalamus. The hypothalamus does many things, but two of its most important jobs are to maintain homeostasis and to control certain hormones.
What is antagonistic effect?
Definition: A biologic response to exposure to multiple substances that is less than would be expected if the known effects of the individual substances were added together.
What is an antagonist to parathyroid hormone?
Calcitonin, in many ways, acts as a physiologic antagonist to PTH.
Is epinephrine and norepinephrine antagonistic?
Noradrenaline is responsible for increased heart rate, widening of the pupil, and an increase in blood pressure. So, adrenaline and noradrenaline are not antagonistic in function. Hence option C is the right answer.
What is the function of antagonistic hormones?
Hormones that act to return body conditions to within acceptable limits from opposite extremes are called antagonistic hormones. These cells control blood glucose concentration by producing the antagonistic hormones insulin and glucagon:
What is an example of an antagonistic hormone in the liver?
The glucose in the liver originates from the breakdown of glycogen and the conversion of amino acids and fatty acids into glucose. When blood glucose levels return to normal, glucagon secretion discontinues (negative feedback). Another example of antagonistic hormones occurs in the maintenance of Ca 2+ concentration in the blood.
What are the antagonistic hormones in the pancreas?
Antagonistic Hormones. Bundles of cells in the pancreas called pancreatic islets contain two kinds of cells, alpha cells and beta cells. These cells control blood glucose concentration by producing the antagonistic hormones insulin and glucagon:
How do hormones affect homeostasis?
If conditions exceed the lower limit of homeostasis, a different action, usually the production of a second hormone, is triggered. Hormones that act to return body conditions to within acceptable limits from opposite extremes are called antagonistic hormones.