into or out of the neuron through these channels? _______Into________ 5. Voltage-gated potassium channels open at what voltage? ______-55____ mV 6. Acetylcholine (ACh) and GABA are neurotransmitters that open chemically gated channels. What ions pass into the cell when these channels are activated? a. ACh: ______sodium_____________ ions b. GABA: ___chloride_____________ ions 7. Ion channels are regionally located and functionally unique. List all the areas on the neuron and the type of potential
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or neurons * Glial cells or neuroglia Neurons * Functional unit of nervous system * Have anatomically and physiologically specialized for communication and signaling * Neurocrene * 10 billion neurons in nervous system * Once they degenerate they don’t usually go REGENERATION Neuroglia * Nerve glue * Supportive cells * 10x greater of your neurons * Not involve in impulse transmission (they can influence synaptic transmission) * Sustain neuron both
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revealed that various brain regions have specific functions. 2. A neuron consists of a cell body and branching fibers:The dendrite fibers receive information from sensory receptors or other neurons‚ and the axon fibers pass that information along to other neurons. Sensory neurons send information from the body’s tissues and sensory organs inward to the brain and spinal cord‚ which process the information. Motor neurons carry outgoing information from the central nervous system to the
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the functions of each other. Neuron - It is the functional and structural unit of nervous system. Therefore‚ the nervous system is also known as NEURAL SYSTEM. Neurons with longer projections are said to be the longest cells in our body. There are about 100 billion neurons and most of them exist in the brain. Some neurons have flask-shaped and are called Purkinje cells. They are found in the cerebellum of brain. Shortly after birth neurons do not develop. A neuron has two main parts viz. a)
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rest of the body. The nervous system consists of the central nervous system (CNS) which is made up of the brain and the spinal cord‚ and the peripheral nervous system (PNS) which is the nerves that link the CNS to the skin‚ muscles‚ and glands.‚ the neurons that link the CNS to our skin‚ muscles‚ and glands. And we will see that our behavior is also influenced in large part by the endocrine system. The chemical regulator of the body‚ composed of the glands that secrete hormones.‚ the chemical regulator
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Psilocybin/Psilocin Mushrooms Since psychoactive substances are known to effect the way brain neurons process information‚ neuropsychology has made some headway into understanding the chemistry of the brain and the actual way in which psychoactive substances work. We now know something about how common psychoactive substances like tea‚ coffee‚ nicotine‚ Psilocybin and alcohol interact with the brain’s neuronal architecture to cause their desired psychological effects of stimulation or stupor.
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include the brain‚ spinal cord‚ and nerves that branch off of those two key parts. Nervous tissue consists of two kinds of nerve cells: Neurons are the basic structural unit of the nervous system. Each cell consists of the cell body‚ dendrites‚ and axon. Neuroglia‚ or glial cells‚ provide support functions for the neurons‚ such as insulation or anchoring neurons to blood vessels. Muscle tissue differs from other tissue types in that it contracts. Muscle tissue comes in three types: cardiac‚ smooth
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and adaptation. Adaptation allows receptors to signal stimulus change. Receptor tuning allows receptors to signal stimulus quality such as color‚ pitch‚ flutter etc. The receptive field (RF) of a sensory neuron refers to the area of the sensory receptor surface providing input to that neuron. Receptors can code (signal) stimulus intensity
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1.Absolute Threshold: the minimum stimulation needed to detect a particular stimulus 50% of the time. 2.Accommodation: the process by which the eye’s lens changes shape to focus near or far images on the retina. 3.Acetylcholine: neurotransmitter that enables muscle action‚ learning and memory. 4.Achievement Motivation: desire for accomplishment. 5.Achievement Test: an exam designed to test what a person has earned. 6.Acoustic Encoding: encoding of sound‚ especially words. 7.Acquisition: the initial
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potential Independent Variable stimulus strength (voltage) Controlled Variables frequency of stimulation‚ type of neuron Experiment 2: Effect of Frequency of Stimulation on Action Potential Generation Dependent Variable membrane potential Independent Variable frequency of stimulation Controlled Variables stimulus strength (voltage)‚ type of neuron 1. Which part of the neuron was stimulated? Axon 2. Where was membrane potential measured? Axon Hillock 3. What was used to measure membrane
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