Neurones and synapses Study guides, Class notes & Summaries

AQA A Level Biology : Year 2- Nervous Coordination Graded A What is the value of the resting potential of a neurone? Why is the resting potential of a neurone negative? -70mV There are more positive ions outside the cell than inside How is the resting potential maintained? actively transports 3 Na+ out for ever 2 K+ into the neurone (ATP Hydrolysed) Sodium-potassium pump Membrane more permeable to K+ and less permeable to Na+ What happens if the sodium ion channels rema...

Detailed A* level notes covering the whole topic of neuronal communication(specification point 5.1.3). This is for the OCR A level Biology A course. These notes cover every single specification point within this topic and are concise but contain everything you need to know. Topics covered: - sensory receptors - neurones - action potentials - synapses

Summary Exam for Biological foundations of mental health 2023 Striatal Dopamine neurotransmission abnormalities in obesity and addiction - CORRECT ANSWER-Such persistent activation of the reward pathway occurs in the case of chronic drug abusers or even in individuals consuming unusually large quantity of food. To answer this question, scientists have quantified dopamine neurotransmission in the brains of addicted or obese individuals, using positron emission tomography-- PET. They...

Martin Caon Examination Questions and Answers in Basic Anatomy and Physiology Third Edition Chapter 10: Endocrine System 10.1 Endocrine System and Hormones in General 1. Which statement below about hormones is true? a. Hormones are enzymes that catalyse reactions. b. Hormones are released into the blood circulation. c. Hormones affect all cells of the body. d. Hormones are released by neurones at synapses. Answer is B: Hormones are circulating messengers that are transported in blood...

(synapses) inhibitory neurotransmitters - ANS-hyperpolarise postsynaptic membrane so potential difference is more negative, preventing an action potential from firing / eg GABA opens Cl- channels so hyperpolarises membrane (synapses) synapse definition - ANS-a junction between neurones and effectors (synapses) process - ANS-action potential reaches pre-synaptic knob and triggers release of neurotransmitters from vesicles / diffuse across synaptic cleft to post-synaptic neurone or effec...

AQA Education (AQA) is a registered charity (number ) and a company limited by guarantee registered in England and Wales (number ). Our registered address is AQA, Devas Street, Manchester M15 6EX. AQA BIOLOGY ESSAY TITLES VERSION 2 Biology essay titles Version 2 This document contains the essay titles and mark schemes used in AQA A-level Biology examinations since 2007. The specifications these exam questions came from are no longer in use, but the marking method has largely remained unchan...

A+ Graded Exam For Aqa A Level Biology Paper 2 2023 3.6.4 Homeostasis - CORRECT ANSWERWhat is negative feedback? - CORRECT ANSWER-A response that returns a change in levels, back to normal. What is positive feedback? - CORRECT ANSWER-A response that amplifies a change from the normal level. Which factors influence blood glucose concentration? - CORRECT ANSWER-Eating food containing carbohydrates, glucose absorbed from intestine to blood. Exercising, more glucose is used in respirat...

These are detailed Revision Notes for Topic 5.1.3 of OCR A-Level Biology (Neural Communication). They were written by me using a combination of the textbook and class notes. I will also be uploading the other topics and creating bundles. Topics Included: - Coordination - Neurones - Sensory Receptors - Nervous Transmission - Synapses - Organisation of the Nervous System - Structure and Function of the Brain - Reflexes - Voluntary and Involuntary Muscles - Sliding Filament Model

AQA GCSE Biology - Paper 2 Questions and Answers | 100% Correct What is homeostasis? - Answer️️ -The regulation of the conditions inside your body and cells to maintain a stable internal environment, in response to changes in both internal and external conditions Name three coordination centres - Answer️️ -The brain, the spinal cord and the pancreas What is negative feedback? - Answer️️ -When your body brings the level of something (e.g. water or temperature) back to normal i...

AQA BIOLOGY ESSAY TITLES VERSION 2 Biology essay titles Version 2 This document contains the essay titles and mark schemes used in AQA A-level Biology examinations since 2007. The specifications these exam questions came from are no longer in use, but the marking method has largely remained unchanged. Further guidance on the marking method used with the essay can be found in Paper 3 Essay marking guidance. Year Questio nTitle 7402/3 2017 7.1 The impo...