B8-The endocrine system

Question 1

What is the overall function of the endocrine system?

Answer 1

The endocrine glands release hormones into the bloodstreams which lets them travel to the cells.

The endocrine hormones help control mood, growth, development the way our organs work and reproduction

Question 2

What is The pituitary Gland?

Answer 2

1) The pituitary gland and the hypothalamus act as a unit regulating the activity of most of the other endocrine glands
2) It lies below the hypothalamus its consist of two main parts-glandular tissue secreting hormones and nervous tissue.
3) Controls growth, functions of sex organs osmoregulation

Question 3

What is the thyroid gland

Answer 3

It is situated in the neck in front of larynx and trachea.
Thyroxine (T3) and Tri-iodothyronine (T4)-The release of these two hormones into the blood is stimulated by TSH(thyroid simulating hormone) which is released from the pituitary gland

Question 4

What is the Adrenal glands?

Answer 4

1)The two adrenal glands are situated on the upper pole of the kidney the glands are made up of two parts which have different structure and functions.
This is the outer layer the cortex and the inner layer called the medulla. The cortex is essential but the medulla is not.

Question 5

What’s is the Pancreas

Answer 5

Only 2% of pancreatic tissue has a endocrine function and this consists of clusters of cells known as pancreatic islets or Langerhans islets. These are scattered around the glands

Question 6

What are the Ovaries

Answer 6

1) As growth of follicle cells surrounding the ovum increases, cells produce oestrogen.
2) Oestrogen-causes secondary characteristics to appear thickens the lining of the uterus

Question 7

Why sis oestrogen important for women?

Answer 7

1) Keeps cholesterol in control
2) Protects bone health for both women and men
3) Affects your brain

Question 8

What happens after ovulation

Answer 8

After ovulation the follicle forms the corpus luteum which secretes progesterone

Question 9

What does progesterone do/

Answer 9

1) Progesterone makes the thickened and ready for the fertilised ovum(zygote) to be embedded
2) If the body conceives progesterone continues to stimulate the body to provide the blood vessels in the endometrium that will feed the growing foetus

Question 10

Testes?

Answer 10

1) FOLLICLE STIMULATING HORMONE (FSH) from the pituitary gland causes the testes to produce Androgens causing the seminiferous tubules to produce sperm and the supporting cells to secrete testosterone

Question 11

What is Testosterone?

Answer 11

1) Testosterone is responsible for secondary sexual features and therefore (maleness )