complete all three. Write a 350- to 700-word response to the following: Explain the communication process of neurons in the brain. List some common neurotransmitters and describe their effect on behavior. Neurons are electrically excitable cells found in the nervous system‚ which is mainly responsible in the transmission of information between the neurons and the cells. With the neurons‚ all body systems are able to communicate with the brain through sending and receiving signals and a connection
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References: Richard Alleyne. (2011‚ March 4). Scientists turn stem cells into brain neurons in Alzheimer ’s breakthrough. The Vancouver Sun‚B.1. Retrieved March 21‚ 2011‚ from ProQuest Newsstand. (Document ID: 2284609701). Carlson‚ N. R. (2011). Foundations of Behavioral Neuroscience. Boston: Pearson. Cipriani‚ G.‚ Dolciotti‚ C.‚ Picchi
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1. Biological Psychology 2.Neuron 3. Dendrite 4. axon 5 myelin 6 action potential 7 Threshold 8 Synapse 9 neurotransmitter 10 acetylcholine 11 Endorphins A branch of psychology concerned with the links between biology and behavior. A nerve cell; the basic building block of the nervous system. The bushy‚ branching extensions of a neuron that receive messages and conduct impulses
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and spinal cord. The peripheral part of the nervous system is said to be peripheral because it is outside the central nervous systems. The human nervous system contains approximately 10 billion nerve cells. These neurons are the basic building blocks of the nervous system. Neurons consist of the nerve cell body and various extensions from the cell body. These extensions‚ or processes‚ are the dendrites (branches off the cell that receive electrical impulses)‚ the axon (the electrical wiring and
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Dopamine is an important neurotransmitter in the nervous system that communicates a lot of information between neurons and parts of the brain. The networks of neurons that use dopamine appear to influence activity in different areas of the brain so that abnormalities can cause abnormal activities in certain parts of the brain. Importantly for schizophrenia‚ dopamine appears to play a big
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in inflamed or degenerating brain tissue. 5. Oligodendrocytes form myelin sheaths around nerve fibers in the CNS. 6. Nerve fibers with many Schwann cells forming a thick myelin sheath are called myelinated fibers‚ or gray fibers. 8. Most of the neurons in the brain and spinal cord are unipolar. 9. In a contralateral reflex arc‚ the receptors and effectors are located on opposite sides of the body. 10. In an ipsilateral arc‚ the effectors and receptors are on opposite sides of the body. 11. Groups
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Telomerase Reactivation Reverses Tissue Degeneration in Aged Telomerase-deficient Mice Jaskelioff et al.‚ Nature‚ January 2011 This study looked at the effects of telomerase activation on the tissues of prematurely-aged adult mice. The telomerase enzyme‚ TERT-ER‚ is not expressed in the cells of these mice. The group induced (turned on) expression of TERT-ER by exposing mice to the compound 4-OHT‚ 4-hydroxytamoxifen (see definitions on next page). This treatment rebuilt the telomeres in
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transmitters for release * Decrease in MAO activityIncrease in NT presynaptic terminalincreased concentration of NT transport of NT outside (high concentration) into neuron (normally low) slows down MAOs * Present in liver‚ intestines & brain monoamine (serotonin‚ dopamine & norepinephrine) releasing neurons * Inactivates monoamines Barbiturates Mimics GABA on the GABA-A receptor (binds and activates it) This increases the time that GABA-A channels open More Cl- comes
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sensory neurons running from stimulus receptors that inform the CNS of the stimuli and the motor neurons running from the CNS to the muscles and glands - called effectors - that take action. The PNS also consists of the Autonomic Nervous System which includes the sympathetic and parasympathetic. Also included with the PNS is the Somatic Nervous System. The body communicates internally through Neurons and Neural Pathways. Neurons consist of dendrites that receive information from the Neuron‚ Axons
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Storage phase: Low-frequency (as stretch is low) afferent impulse from the stress receptor of UB Pelvic nerves (splanchnic‚ hypogastric) Spinal cord Inhibition of sacral parasympathetic Stimulation lumbar sympathetic preganglionic neurons preganglionic neurons Stimulation of Onuf’s nucleus Relaxation of detrusor & contraction relaxation of detrusor & contraction contraction of the sphincter of sphincter vesicae of sphincter vesicae urethrae Voiding phase: Distention of urinary bladder
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