Hormonal Control Flashcards

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1
Q

What is the function of an endocrine gland?

A

Endocrine glands release hormones into the bloodstream, the three main endocrine glands are the pancreas, the ovaries (females) and the testes (males)

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2
Q

What are hormones?

A

A hormone is a chemical messenger released into the bloodstream

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3
Q

How do hormones work?

A

They are carried all over the body in the blood to a specific target cell. The target tissue contains special receptor proteins that will recognise the hormone. The receptor proteins ensure only the target tissues are affected by the hormone

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4
Q

How are hormones specific?

A

Only cells from particular tissues that have the complementary receptor on their cell surface for the specific hormone are affected by the hormone, this makes the specific

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5
Q

How are changes in blood glucose levels detected?

A

By the pancreas

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6
Q

How does the body respond to an increase in blood glucose?

A

-The pancreas responds by releasing the hormone insulin
-Receptors in the liver detect the insulin
-In response, the liver starts to convert excess glucose into glycogen
-The blood glucose levels fall

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7
Q

How does the body react to a decrease in blood glucose?

A

-The pancreas responds by releasing the hormone glucagon
-Receptors in the liver detect the glucagon
-In response the liver starts to convert glycogen back into glucose
-The blood glucose levels rise

When the glucose is gone, it’s time for glucagon!

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