(a)[4]
Use the letters provided to label, on the diagram, the organs that secrete the following hormones: J - testosterone, K - insulin, L - progesterone, M - follicle stimulating hormone (FSH).
(b)[4]
Explain how one of the hormones from (a) travels from the named organ that produces it to its named target organ.
(c)[3]
Explain how progesterone and luteinising hormone (LH) are related in the menstrual cycle.