which of the following is not a hormone- 1. vit D 2. thyroxine 3. adrenaline 4. none of these

Question

Answer

vitamin D is called as calcitriol or more specifically BIOACTIVE VITAMIN D is a STEROID HORMONE that helps in mantaining the calcium level in blood.. therefore answer is 4...

Answer

Option d is correct answer

Answer

Vitamin D

Answer

Its a

Answer

thanks gaurav.... got the answer...Vitamin D is actually a hormone rather than a vitamin. The body makes most of the vitamin D it needs; only about 10% comes from our food. The action of sunlight on our skin produces a substance called cholecalciferol, which is converted by the liver to calcidiol.

Answer

Vitamin D

Answer

A

Answer

Vitamin D

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none of these

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I also ticked this option...but answer given in this app is option none of these...

Answer

Vit D  is  a fat soluble vitamin.....its scientific name is calciferol

Answer

VitD

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vit D

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Vit d

Answer

vit d

Answer

Vitamin d

Answer

Vitamin-D

Answer

Option(4)none of these

Answer

1-vit D 2

Answer

Introduction:
Hormones are chemical messengers produced by various glands in the body. They regulate various physiological processes and play a crucial role in maintaining homeostasis. In this response, we will analyze the given options to determine which one is not a hormone.

Vitamin D:
Vitamin D is a fat-soluble vitamin that plays a vital role in calcium and phosphate metabolism. It helps in the absorption of calcium and phosphate from the intestines and promotes their deposition in bones, thereby maintaining bone health. Although vitamin D is often referred to as a hormone, it is technically not a hormone. It is produced in the skin upon exposure to sunlight and can also be obtained through dietary sources. Vitamin D acts more like a prohormone, as it undergoes stepwise activation in the liver and kidneys to form its active hormonal form, calcitriol. Calcitriol functions as a hormone by regulating calcium and phosphate levels, but vitamin D itself is not considered a hormone.

Thyroxine:
Thyroxine, also known as T4, is a hormone produced by the thyroid gland. It plays a crucial role in regulating metabolism and growth. Thyroxine is involved in the regulation of numerous body functions, including heart rate, body temperature, digestion, and energy production. It is released into the bloodstream and acts on various target tissues throughout the body. Thyroxine is unquestionably a hormone.

Adrenaline:
Adrenaline, also known as epinephrine, is a hormone and neurotransmitter produced by the adrenal glands. It is released in response to stress or danger and is responsible for the 'fight-or-flight' response. Adrenaline increases heart rate, dilates blood vessels, and increases blood flow to the muscles, preparing the body for immediate action. It also stimulates the release of glucose from the liver, providing a quick source of energy. Adrenaline is undoubtedly a hormone.

Conclusion:
Out of the given options, Vitamin D is not a hormone. It is a prohormone that undergoes activation to form its active hormonal form, calcitriol. On the other hand, thyroxine and adrenaline are both hormones that play important roles in the body.

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