4.2.2 - Endocrine System

Question 1

What is the endocrine system

Answer 1

• supplements the work of the nervous system
• regulated the organs in the body
• a network of glands across the body that manufacture and secrete hormones
• the endocrine system used blood vessels to deliver hormones to their target sites in the body

Question 2

What are hormones

Answer 2

• chemicals circulated in the bloodstream and carried to target sites through the body
• hormones affect the target cells ( they have many necessary receptors fro that hormone)
• when enough receptor sites are stimulated by the hormone, this could cause a physiological reaction to the target cell

Question 3

What is the pituitary gland

Answer 3

• the master gland: controls the glands which releases hormones, regulating body functions
• pituitary is controlled by the hypothalamus
• pituitary produces hormones that travel in the bloodstream to their target site
• these either cause a change or stimulate other glands to release hormones
• negative feedback stops hormone levels from rising too high.

Question 4

What is the gland that releases adrenaline & where is it located

Answer 4

Adrenal gland, produced from the kidney.

Question 5

What hormone is released from the adrenal gland

Answer 5

• Adrenaline and noradrenaline
• cortisol

Question 6

What is the effect of adrenaline (and noradrenaline) on the body

Answer 6

Responsible for the fight or flight response

Question 7

What is the effect of cortisol on the body

Answer 7

Stimulates the release of glucose to provide the body with energy, while suppressing the immune system.

Question 8

Where is oestrogen released from and from what gland

Answer 8

• produced in the ovaries
• located in the reproduction organs

Question 9

What is the effect of oestrogen on the body

Answer 9

Controls the regulation of the female menstrual system and pregnancy

Question 10

Where is melatonin produces and released from in the body

Answer 10

Produced in the pineal gland
Located in the brain