endocrine system & fight or flight

Question 1

Explain one function of the endocrine system?

Answer 1

-Regulates the activity of cells and organs within the body

Question 2

Identify 2 glands that form part of the endocrine system and outline their functions?

Answer 2

-pineal gland - secretes melatonin - targets and promotes sleep + deficiency can cause anxiety and insomnia
-adrenal gland - releases adrenaline- targets heart cells and lungs + helps you react in sudden stressful situations- deficiency causes tiredness and loss of appetite

Question 3

What are hormones ?

Answer 3

-Chemical messengers produced by glands in the endocrine system
-travel through bloodstream + targets cells to respond and take action
Eg melatonin- produced in response to darkness to promote sleep

Question 4

Flight or flight response

Answer 4

-the flow of blood is diverted from the surface of the skin
-the process of digestion is inhibited
-physiological reaction that prepares the body to confront or flee from a threat
-rapid breathing, pupil dilation, inhibition of digestion

Question 5

Outline the role of adrenaline in the fight or flight response?

Answer 5

-increases heart rate - pumps more blood
-dilates airways - increase oxygen intake
-improves reaction time - more alert