B11 Hormonal coordination Flashcards
What is the endocrine system?
system of glands that secrete hormones into the
bloodstream
How do the effects of the endocrine system compare to those of the nervous system?
endocrine system effects are slower but act for longer
Where is the pituitary gland located?
brain
Which organ monitors and controls blood glucose
concentration?
pancreas
Which hormones interact to regulate blood glucose levels?
insulin and glucagon
What is the cause of Type 1 diabetes?
pancreas produces insufficient insulin
What is the cause of Type 2 diabetes?
body cells no longer respond to insulin
What is the function of FSH?
causes eggs to mature in the ovaries, and stimulates ovaries to produce oestrogen
What is the function of LH?
stimulates the release of an egg
What is the function of oestrogen?
causes lining of uterus wall to thicken
What are the methods of hormonal contraception?
oral contraceptives, injection, implant, skin patch, IUD
What are the methods of non-hormonal
contraception?
barrier methods, copper IUD, spermicidal agents, sterilisation, abstinence
State the disadvantages of IVF treatment.
- emotionally and physically stressful
- low success rate
- can lead to risky multiple births
What is the function of adrenaline in the body?
increases heart rate and boosts delivery of oxygen and glucose to brain and muscles to prepare the body for ‘fight or flight’
What is the function of thyroxine in the body?
stimulates basal metabolic rate, so is important for growth and development
Name one hormone controlled by negative feedback.
thyroxine
Which endocrine glands control secondary sexual
characteristics?
ovaries in females, testes in males
