Section 7 - Animal Coordination, Control and Homeostasis

Question 1

How are hormones transported around the body?

Answer 1

in the blood

Question 2

describe the role of testes in males.

Answer 2

the testes produce testosterone, which controls puberty and sperm production.

Question 3

name the gland that produces adrenaline.

Answer 3

adrenal glands

Question 4

what is metabolic rate?

Answer 4

the speed at which chemical reactions happen in the body

Question 5

What term is used to describe the release of an egg from an ovary?

Answer 5

ovulation

Question 6

Name the hormone that maintains the lining of the uterus.

Answer 6

progesterone

Question 7

Describe the lining of the uterus changes over the stages of the menstrual cycle.

Answer 7

During stage one of the menstrual cycle the uterus lining breaks down. During stage two the lining of the uterus builds up again into a thick layer full of blood vessels. The lining of the uterus is then maintained during stages three and four. If no fertilised egg implants in the uterus by day 28, the uterus lining starts to break down, and a new cycle begins at stage one.

Question 8

Describe the hormones control the development and release of an egg.

Answer 8

FSH causes an egg to mature in a follicle in one of the ovaries. LH then stimulates the release of a matured egg at day 14

Question 9

Explain how the combined pill reduces fertility.

Answer 9

Taking oestrogen every day means the level of oestrogen in the blood are kept high. This inhibits the production of FSH and so stops an egg from developing. Progesterone reduces fertility by stimulating the production of thick cervical mucus which stops sperm getting through the entrance to the uterus and reaching an egg.

Question 10

Explain how clomifene therapy helps women who don’t ovulate.

Answer 10

Taking clomifene causes more FSH and LH to be released by the body, which stimulate egg maturation and ovulation.

Question 11

Which gland monitors and controls blood glucose concentration?

Answer 11

pancreas

Question 12

Give treatments for controlling type 2 diabetes.

Answer 12

eating a healthy diet, getting regular exercise, losing wight if needed

Question 13

What is type 1 diabetes? How is it treated?

Answer 13

-Type 1 diabetes is where the pancreas produces little or no insulin.
- Type 1 diabetes is treated with insulin therapy, where insulin is injected into the subcutaneous tissue, from where it will enter the bloodstream.
- People with type 1 diabetes are also advised to exercise regularly and limit their intake of foods rich in simple carbohydrates.