brain is still getting ready for full function. For the first three years after birth the brain’s job is to make connections with neurons. These networks can be made when impulses are sent and received by neurons. The axon delivers messages and the dendrite collects them. These links form what is called a synapses. During the first three years of birth the number of neurons stay the same while the number of synapses grow. From birth to the age of three the brain creates more synapses than it needs.
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are filled with cerebrospinal fluid 6 grey matter: brownish-grey nerve tissue consisting of mainly cell bodies within the brain and spinal cord 6 white matter: the white nerve tissue of the brain and spinal cord‚ consisting of mostly myelinated neurons. PNS 6 two parts: (1) autonomic nervous system: the part of the nervous system that relays information to the internal organs that are not under the conscious control of the individual. This system is made up of the sympathetic and the parasympathetic
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monitors the processes taking place in our bodies at all times. The nervous system in all its aspects allows us to function as a single controlled and coordinated unit. The basic nerve cell nerve cell is a neuron; a chain of neurons is actually a "communication cable "inside our bodies. Neuron structure is basically the cell nucleus‚ the dendrites which receive information‚ and the axon which is responsible for the transference of the information. The information is transmitted via electrical pulses:
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Muscles and glands Neurons communicate with other neurons and stimulate both ___ and ___. Synapses‚ cell bodies‚ dendrites Signals from other neurons are received at junctions called ___‚ located primarily on the ___ ___and ___‚ the receptive and integrative regions of the neuron. Axon hillock‚ action potential The area where the axon emerges from the soma (cell body) is called the ___ ___. This is also where the outgoing signal‚ called a/an ___ ___ is generated. Collaterals‚ terminals
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Introductory Psychology Exam #1 Study Guide Chapter 1: Science of Psychology Know the definition of psychology -The science of behavior and mental processes. What 2 Greek roots define Psychology -Psyche is “mind” and Logos is “study” or “knowledge”. Identify the different perspectives describing psychology -The Behavioral Perspective: focuses on observable behavior and the important role of learning in behavior‚ aka Behaviorism. -The Psychodynamic Perspective: The view
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transparent. Answer: A 2. Which of the following lists the parts of a reflex arc in the correct sequence? a. receptor‚ sensory neuron‚ motor neuron‚ interneuron‚ effector b. effector‚ receptor‚ sensory neuron‚ motor neuron‚ interneuron c. effector‚ sensory neuron‚ receptor‚ interneuron‚ motor neuron d. receptor‚ sensory neuron‚ interneuron‚ motor neuron‚ effector Answer: D 3. When a nerve fiber is polarized‚ the concentration of a. sodium and potassium ions is higher on the inside
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From religion to entertainment to swooning over girls‚ artists have used music as a way to express their emotions towards a specific subject. Throughout time‚ the effects music has on the mind has been overlooked; that music has the ability to do so much more than just be a form of entertainment. Due to recent experiments‚ music has been shown to change the behavior of an individual by stimulating the brain and increasing neural connections. Music can not only entertain‚ but it can also advance
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beta-amyloid peptide‚ a hard‚ waxy deposit that results from the break down of the protein amyloid. Another characteristic of the brain is neurofibrillary tangle within neurons. There is also loss of neurons and the synapses connecting them throughout the neocortex. Scientist thinks that the plaques and build up cause the neurons to shrink and eventually die. Synapses are the spaces between nerve cells where information passes from one cell to another. Scientist isn’t sure if the build up of the
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fundamental defect that is a hallmark of the disease: the loss of brain cells that produce an important chemical‚ dopamine‚ which helps direct muscle activity. Progressive loss of dopamine-containing neurons is a feature of normal aging; however‚ most people do not lose the 70% to 80% of the dopaminergic neurons required to cause symptomatic PD. Without treatment‚ PD progresses over 5 to 10 years to a rigid‚ akinetic state in which patients are incapable of caring for themselves. Death may result from complications
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INTRODUCTION Pediatric nursing or child health nursing is the specialty nursing care of infants‚ children and adolescents. Pediatric nursing is an excellent career for those who love kids and don’t mind hard work. The day of a pediatric nurse can be hectic‚ working with patients that range from newborns to teenagers. No two days are ever the same. Pediatric nurses work mostly on the pediatric halls in hospitals‚ although some may also work in a doctor’s office. The work involved
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