AQA B1 Nerves and hormones 0.0 / 5 ? BiologyNervous system, hormones and behaviourGCSEAQA Created by: lauren5491Created on: 09-04-17 13:31 describe the structure of the nervous system? receptor,sensory,cns(relay),motor,muscle. 1 of 12 what is a synapse? a gap at the end of 2 neurones 2 of 12 how are impulses carried across the synapse? by a chemical message 3 of 12 what is the purpose of a reflex action? to protect the body from harm 4 of 12 what is a hormone? chemical messages carried in the blood. 5 of 12 which 3 hormones control the mednstral cycle? FSH, LH and oestrogen. 6 of 12 where are the 3 menstral hormones produced? ovaries - oestrogen , pituatry gland- FSH and LH 7 of 12 what do the 3 menstral hormones do? FSH - causes agg to mature , LH- stimulates egg release , Oestrogen- turns off FSH and turns on LH 8 of 12 describe ivf? the eggs are collected then fertilised in a dish with the fathers sperm then implanted back into the mothers womb or into a surragate 9 of 12 what is auxin ? a plant hormone 10 of 12 how do roots and shoots respond to auxin? auxin causes one side to grow faster in a shoot and make it grow towards the sun and it is the oppisite in the roots. 11 of 12 what is phototropism and gravotropism? phototropism- towards light gravitropism- towards gravity 12 of 12
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