A-LevelBiologyControl and coordinationMay/June 2020Paper 4 Q19 Marks
In mammals, the hormone ACTH is released from the anterior pituitary gland. ACTH stimulates the cells of the adrenal glands to synthesise the hormone cortisol. This is an example of cell signalling. The main stages of cell signalling involving ACTH are similar to the main stages of cell signalling by adrenaline.
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