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Which hormone causes dilation of blood vessels, increased oxygen consumption and gluconeogenesis?
(A) Glucagon
(B) ACTH
(C) Insulin
(D) Adrenaline

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Answer
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Hint: Hormones play a crucial role as they assist and regulate the major functions of the body such as growth, repairing and reproduction. The hormones also act as messengers for monitoring, regulating and managing various activities all over in the body.

Complete Answer:
- The hormone adrenaline is secreted from the adrenal medulla and is mainly responsible for the generation of various responses towards the body. It mostly shows its actions over the blood vessels, cardiac, smooth and skeletal muscles.
- It expands the blood vessels and significantly enhances the blood pressure, heart rate, rate of metabolism and breathing, and therefore increases the consumption of oxygen and instigates the development of glucose through the breakdown of glycogen in the liver. These all processes augment the blood glucose levels.
- The sudden increase in the adrenaline secretion can be instigated through laborious workout, heart collapse, chronic stress, nervousness or turmoil associated with the adrenal gland or brain.
- But it has also been observed that few people get pleasure from the sensations of an adrenaline rush. They may prefer to perform intense sports or actions to activate an intentional discharge of adrenaline in the body.
- Glucagon is a type of peptide hormone which is formed through the alpha cells present in the pancreas. Its major mechanism includes an increase in the glucose and fatty acid concentration in the blood and is recognized as the prime catabolic hormone in the body. It is also utilized as a medication to care for numerous health situations.

Hence the correct answer is option D.

Note: The common adverse effects might comprise breathing troubles, rapid heartbeats, weakness, nausea, pale skin, headache, sweating, vomiting and many others.