Adrenaline and thyroxine

Cards (7)

Where is adrenaline released from? 
The adrenal glands, just above the kidneys
Why is adrenaline released? 
In response to stressful or scary situations to get the body ready for fight or flight
How is adrenaline released? 
The brain detects fear or stress and sends nervous impulses to the adrenal glands which secrete adrenaline
Where is thyroxine released? 
The thyroid gland in the neck
Why is thyroxine released? 
To regulate the basal metabolic rate and stimulate protein synthesis for growth and development
How is thyroxine released? 
Through negative feedback in response to TSH (thyroid stimulating hormone) which is secreted from the pituitary gland
What happens if there is too much thyroxine in the blood? 
TSH secretion is inhibited which reduces the thyroxine production