Glands and Hormones - Endocrine Glands

Question 1

What do endocrine systems do?

Answer 1

Produce or secrete hormones.

Question 2

What are hormones?

Answer 2

Chemical substances that regulate the activity of cells to

Question 3

What are some of the major glands f the endocrine system?

Answer 3

The pituitary gland, adrenal glands and the reproductive organs (ovaries and testes).

Question 4

What is an everyday example of something that can be compared to the regulation of the endocrine system?

Answer 4

By feedback similar to how a thermostat regulates temperature in a room.

Question 5

What are the stages of the endocrine system at work - hypothalamus, pituitary gland example?

Answer 5

1 - A single is sent from the hypothalamus to the pituitary gland in the form of a ‘releasing hormone’.
2 - The pituitary gland secretes a ‘stimulating hormone’ into the bloodstream.
3 - This hormone signals the target gland (e.g. adrenal gland) to secrete its hormone.
4 - As levels of this hormone rises in the bloodstream, the hypothalamus shuts down secretion of the releasing hormone and the pituitary gland shuts down secretion of the stimulating hormone.
5 - This slows own secretion of the target glands hormone, resulting in stable concentrations of hormones circulating in the bloodstream.