defined as the method which neurons use to communicate with each other‚ determining if the cumulative postsynaptic potential in the neuron is enough to pass the threshold for firing. There are two types of summation‚ spatial summation and temporal summation. Both types of summation are similar in that they work to strengthen the EPSP of a neuron‚ meaning they help create more postsynaptic potential so that neurons are more likely to fire. Spatial summation and temporal summation also both use an
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system communicate via these chemical synapses. The electrical activity in a presynaptic neuron occurring at the chemical synapses causes the release of a chemical messenger called a neurotransmitter‚ which binds to neurotransmitter receptors on a postsynaptic neuron. Neurotransmitters are the chemical messengers that
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synaptic strength long-term potentiation (LTP) and long-term depression (LTD) strengthen synaptic inputs that are effective at depolarizing the postsynaptic neuron and weaken inputs that are not‚ thus reinforcing useful pathways in the brain. Despite their utility these mechanisms synapses that are strengthened become more effective at depolarizing the postsynaptic neuron and will continue to be strengthened in an unconstrained positive feedback cycle‚ eventually driving neuronal activity to saturation
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The Major Issues- Chapter 1 Module 1.1 1. The Mind-Brain Relationship a. Biological Psychology is the study of physiological evolutionary and developmental mechanism of behavior and experience. b. At the microscopic level‚ we find two kinds of cells: the neurons and the glia i. Neurons send messages to each other and also to muscles and glands. They have changing sizes‚ shape and functions. ii. Glia- which are most of the time smaller than neurons have many
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Site Plan | I. Neurons/nerve cells A neuron is a cell specialized to conduct electrochemical impulses called nerve impulses or action potentials. Neuron is the main cellular component of the nervous system‚ a specialized type of cell that integrates electrochemical activity of the other neurons that are connected to it and that propagates that integrated activity to other neurons. They are the basic information processing structures in the CNS.
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`ANP 1105 B – Human Anatomy and Physiology I Contents 1. Structural Organization of the Human Body (2 Lectures) 1.3.1 Tissues Tissue: groups of structurally similar cells that have perform common/related function Tissues cooperate within an organ for function of organ as a whole‚ different issues = division of labor 1.3.2 4 Types of Tissue: 1. Muscle Tissue: movement 2. Epithelial Tissue: covering 3. Nervous Tissue: control (regulation)
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BIOLOGY SYNOPTIC ESSAY – UNIT 5 – JUNE 13 THE MEMBRANES OF DIFFERENT TYPES OF CELLS ARE INVOLVED IN MANY DIFFERENT FUNCTIONS – 25 MARKS Membranes are found in all organisms‚ around and within cells. They control the movements in and out of cells‚ as well as protecting cells. They also allow different functions to occur. They have the same basic structure called the plasma membrane. All plasma membranes‚ around or inside cells have a same phospholipid bilayer structure. Phospholipids contribute to
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Illnesses’ that affect the brain; such as: bipolar disorder‚ schizophrenia and the many other mental illnesses discovered over the last few decades. More importantly than the epidemic of these illnesses‚ is the way that they are treated and the potential risks associated with treatment. This paper is designed to analyze the risk of an epidemic of deliberate self-harm caused by the utilization of anti-depressants and its impact on the field of biological psychology. The brain; whether of a
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| | | | Question 2 2 out of 2 points | | | |[pic] |The typical value for the resting membrane potential is _________? | | | | | |Answer | | | | | |Selected Answer:
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Front this divison of the peripheral nervous system includes the neurons found along the GI tract Back enteric nervous system Front name for a group of neuron cell bodies in the CNS Back nucleus Front name for a group of neuron cell bodies in the PNS Back ganglia Front these ions are cross the neuron cell membrane during a hyperpolarization Back Cl- K+ Page 1 Front Back these gates respond to chemical stimuli such as nerutransmitters
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