B5 (p2) Flashcards
(7 cards)
1
Q
What is the endocrine system?
A
a system of glands that secrete hormones into the bloodstream
2
Q
what is the function of thyroxine in the body
A
stimulates basal metabolic rate, so is important for growth and development
3
Q
name one hormone controlled by negative feedback
A
thyroxine
4
Q
give three things all control systems include
A
receptors, coordination centres, and effectors
5
Q
how are excess amino acids excreted from the body
A
deaminated to form ammonia in the liver, ammonia is converted to urea and excreted
6
Q
why does ammonia need to be excreted safely
A
ammonia is toxic
7
Q
what is the function of thyroxine
A
regulates how quickly the body produces energy, makes proteins
