Which of the following is not a function of the skin?
(a) regulation of body temperature
(b) protection of the body
(c) production of red blood cells
(d) perception of the body's surroundings

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.