Coordination and Control

How are impulses transmitted in the nervous system? Electrical across neurones, chemical across a synapse. Electrical in the nervous system, chemical in hormones. Where are hormones produced? In glands. What is a synapse? A junction between two neurones. What type of cell detects a change in external conditions: eg. temperature? A receptor: receptors detect the stimuli. How long does the menstrual cycle last? 28 days. Which three hormones control the cycle? LH, FSH, Oestrogen. Which hormone stimulates the egg to be released by an ovary? LH - lutenising hormone. Which two hormones does the pituitary gland produce? LH + FSH…