Adrenaline is secreted quickly when a person is frightened. How does this affect the heart beat and the liver?

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Solution

The correct option is C

Adrenaline prepares the body to meet any emergency situation. It increases heart beat and blood supply to muscles and more glucose is released in the blood. You must have noticed it in a situation when you suddenly see a snake coming near you. Your heartbeat increases, the blood supply to your muscles increases and you start running.

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Question 3
How does our body respond when adrenaline is secreted into the blood?

Which is the target organ for both adrenaline and insulin ?

(a) heart

(b) kidney

(d) pancreas

Q. There are two similar glands P which are located on top of two similar organs Q in the human body. P are often called the emergency glands and they secrete a hormone R into the blood stream. R is secreted in large amounts when a person is frightened. It brings about temporary changes in the body which allow a lot of substance S from the liver to go into the blood to provide a lot of energy in a very short time. This helps a person to fight back or run away from the frightening situation.

What are P, Q, R and S?

Q. Adrenaline the heart beat and results in more being released into the blood stream.

There are two similar glands P which are located on the top of two similar organs Q in the human body. The glands P are often called glands of emergency and they secrete a hormone R into the blood stream. The hormone R is secreted in large amounts when a person is frightened. It brings about temporary changes in the body which allow a lot of substance S from the liver to go into blood so as to provide a lot energy in a very short time. This helps the person concerned to fight back or run away from the frightening situation. What are P, Q, R and S ?

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