The endocrine system secretes hormones into the bloodstream from glands throughout the body. Hormones produce an effect on specific target organs in the body.
In what structures are hormones produced?
How do hormones spread around the body?
In the blood
By active transport
Which is the master gland?
What part of the brain helps control thyroxin levels?
Which of these is not a secondary sexual characteristic of puberty?
On what day of the menstrual cycle does ovulation usually occur?
Which hormone remains high if a women is pregnant?
Which hormone stimulates an egg to mature?
What role does the empty follicle play after the egg is released?
It releases progesterone to maintain the uterus lining.
It starts to develop another egg ready for the next cycle.
It develops into a thick lining ready for implantation if the egg is fertilised.
What hormone is produced in the thyroid gland? - Higher