Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis? [2006]a)Insulinb)Adrenalinec)Glucagond)ACTHCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Adrenaline(Epinephrine) hormone is secreted by adrenal medulla under the conditions of emergency. Therefore, it is also known as emergency hormone. During emergency, it is released and causes dilation of blood vessels, so that the blood flow is increased. It also increases heart beat so that more oxygen is consumed and it also increases blood glucose level.

Answer

Adrenaline initiates the stress responses in the body. It increases heart rate, blood pressure, metabolic rate, dilates blood vessels and increases the breathing rate and hence oxygen consumption and glucogenesis (i.e. the formation of glucose by the breakdown of liver glycogen), elevating the blood glucose levels

Answer

Hormone causing dilation of blood vessels, increased oxygen consumption, and glucogenesis

Adrenaline
Adrenaline, also known as epinephrine, is a hormone released by the adrenal glands in response to stress or excitement. It plays a crucial role in the body's fight-or-flight response, preparing the body for intense physical activity.

Effects of adrenaline:
Adrenaline has several effects on the body, including the dilation of blood vessels, increased oxygen consumption, and glucogenesis.

Dilation of blood vessels:
When adrenaline is released into the bloodstream, it binds to specific receptors on the smooth muscle cells lining the blood vessels. This binding triggers a cascade of events that result in the relaxation of these muscles, causing the blood vessels to dilate. Dilation of blood vessels helps to increase blood flow, delivering oxygen and nutrients to the muscles and organs that need them the most during times of stress or physical exertion.

Increased oxygen consumption:
Adrenaline increases the metabolic rate and oxygen consumption in the body. It stimulates the breakdown of glycogen, a stored form of glucose, into glucose. This glucose is then used by the cells to produce energy through a process called cellular respiration. Increased oxygen consumption ensures that an adequate supply of oxygen is available to meet the increased energy demands during stressful situations or physical activity.

Glucogenesis:
Glucogenesis is the process of synthesizing glucose from non-carbohydrate sources, such as amino acids and glycerol. Adrenaline stimulates the breakdown of glycogen stored in the liver, releasing glucose into the bloodstream. This glucose can then be used by the body as a source of energy during times of stress or physical activity when the demand for glucose is high.

Conclusion:
In summary, adrenaline is the hormone responsible for causing the dilation of blood vessels, increased oxygen consumption, and glucogenesis. These effects help prepare the body for intense physical activity and provide the necessary energy and oxygen to the muscles and organs during times of stress or excitement.

Similar NEET Doubts

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

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

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

Which of the following would not result from the release of adrenaline (epinephrin e)?

Which of the following would not result from the release of adrenaline (epinephrin e)?

Top Courses for NEETView all

Biology Class 11

Daily Test for NEET Preparation

NEET Mock Test Series 2025

Topic-wise MCQ Tests for NEET

Physics Class 11

Top Courses for NEET

Top Courses for NEET

Suggested Free Tests

Related Content

About NEET

NEET Preparation Material

How to Prepare for NEET Exam?

NCERT Based Study Material

NEET Mock Tests

Other Popular Exams

Company