Question

Which hormone causes dilation of blood vessels, increased oxygen consumption, and glycogenesis?

• A. Adrenaline
• B. Serotonin
• C. Insulin
• D. Thyroid

Answer 1

The correct option is A

Adrenaline

The correct option is A.

Explanation of correct option:

1. The adrenal medulla secretes adrenaline.
2. It mostly affects skeletal muscles, adipose cells, blood vessels, smooth muscles, and cardiac muscles.
3. The body's stress reactions are started by adrenaline.
4. It raises blood glucose levels by accelerating glucogenesis, or the production of glucose from the breakdown of liver glycogen, which increases heart rate, blood pressure, metabolic rate, and blood vessel dilation.

Explanation of incorrect options:

Option B:

1. Serotonin affects learning, memory, and happiness in addition to controlling body temperature, sleep, appetite, and sexual activity in your body.
2. Serotonin deficiency is considered to contribute to mania, anxiety, sadness, and other illnesses.

Option C:

1. Insulin enhances the rate of glycolysis in muscle and adipose tissue,
2. The rate of glucose transport across cell membranes in these tissues
3. Insulin does not affect the blood vessels.

Option D:

1. Thyroid hormones control metabolism, including energy expenditure, thermogenesis, and the metabolism of proteins, carbohydrates, and lipids, which are greatly influenced by thyroid hormones.
2. It does not affect the blood vessels or oxygen consumption.

Final answer: Adrenaline causes dilation of blood vessels, increased oxygen consumption, and glycogenesis