Individual Assignment Biological Psychology Worksheet · Complete the University of Phoenix Material: Biological Psychology Worksheet‚ located on the student website. PSYCH 575 Week 2 Individual Assignment Neuron Worksheet · Complete the University of Phoenix Material: Neuron Worksheet‚ located on the student website. · Use the following terms to complete Part I of the worksheet: Axon Axon hillock Dendrites Myelin sheath Node of Ranvier Nucleus Soma Terminal button PSYCH
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information from spine to upper brain Hypothalamus– involved in regulating activities internal organs‚ monitoring information from the autonomic nervous system Basic functional cell of nervous system Transmits impulses (up to 250 mph) Parts of a Neuron Dendrite – receive stimulus and carries it impulses toward the cell body Cell Body with nucleus – nucleus & most of cytoplasm Axon – fiber which carries impulses away from cell body Schwann Cells- cells which produce myelin or fat layer in the
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perceptions‚ memories‚ reasoning‚ and biological activities. Define the cerebral cortex The layer of unmyelinated neurons (gray matter) forming the cortex of the cerebrum. The cerebral cortex is responsible for higher functions of the nervous system‚ including voluntary muscle activity and learning‚ language‚ and memory. It is composed of neurons and axons. Define hemisphere as it relates to the brain The left side of the brain controls the functions of the right
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occurs when neurons pass signals between each other to relay and receive information. A neuron consists of a cell body‚ multiple dendrites‚ and an axon. The cell body serves as the command center for the neuron‚ it contains DNA (deoxyribonucleic acid) and produces the energy used by the cell. The dendrites are the receptors of the neuron‚ and receive signals sent from other neurons. The axon‚ a long spine like process‚ consists of multiple axon terminals; the site of connection to other neurons. During
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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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Chapter 2- Darwin was the first to suggest how evolutionoccurs. Humans belong to the primate family known as hominins. Characteristics that evolved to perform one function but were co-opted to perform another function are called exaptations. Each group of three consecutive nucleotide bases along the strand of messenger RNA is called a codon‚ which instructs the ribosome to add amino acids to the protein being constructed. Subsequent to the nature-nuture issue‚ a second line of thought surrounding
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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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Parkinson’s disease. Background information: In Parkinson’s disease‚ molecular mechanisms that function to mediate the deterioration of dopamine neurons located at the midbrain not clearly comprehended by many. In the pattern of a mouse of this disease‚ empirical evidence in support for the role of calcium-dependent protease‚ in the failure of dopamine neurons is provided
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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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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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