Hormones

Question 1

Give a brief explanation of what a hormone is and does?

Answer 1

Hormones are chemicals released directly into the blood. Carried in blood plasma to other parts of body, only affect particular cells (target cells) in particular places. Hormones control things in cells and organs that need constant adjustment.

Question 2

Hormones are produced in (and secreted by)…

Answer 2

Various glands

Question 3

What speed do hormones travel through your body at?

Answer 3

The speed of blood

Question 4

Hormones tend to have relatively…

Answer 4

Long-lasting effects

Question 5

Explain the pituitary gland…

Answer 5

This produces many important hormones including FSH and LH, which are involved in the menstrual cycle.

Question 6

Explain ovaries…

Answer 6

Produce oestrogen, which is involved in the menstrual cycle.

Question 7

Explain 3 points about nerves…

Answer 7

1. Very fast action.
2. Act for a very short time.
3. Act on a very precise area.

Question 8

Explain 3 points about hormones…

Answer 8

1. Slower action.
2. Act for a long time.
3. Act in a more general way.

Question 9

What is the definition of a hormone?

Answer 9

Hormones are chemical messengers which travel in the blood to activate target cells.