H.1.1 State that hormones are chemical messengers secreted endocrine glands into the blood and transported to specific target cells
H.1.2 State that hormones can be steroids, proteins and tyrosine derivatives, with one example of each
H.1.3 Distinguish between the mode of action of steroid hormones and protein hormones
H.1.4 Outline the relationship between the hypothalamus and the pituitary gland
H.1.5 Explain the control of ADH (vasopressin) secretion by negative feedback
