FCA1: Student answer reflects accurate knowledge of the sequence of events that construct a nerve signal (message sent from where and going where?). FCA 2: Student answer contains proper descriptions for each of the following terms: axons‚ dendrites‚ neurons‚ terminal buttons‚ soma‚ synapse‚ receptor sites‚ neurotransmitter FCA 3: Student’s answers to neurotransmitter scenario questions display evidence of an understanding of the effects of various neurotransmitters by providing a logical choice(s)
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Lipids are made up of carbon‚ hydrogen and oxygen (phospholipids also contain phosphate) and are found in a wide variety of organisms from bacteria to eukaryotes where they perform a wide variety of useful functions. This essay will expand on these functions to describe the role of lipids. There are several types of lipid including triglycerides‚ steroids‚ waxes and phospholipids. Triglycerides are made up of three fatty acids combined with glycerol by an ester linkage meaning they are predominantly
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The depolarisation and repolarisation that takes place within a cell from that occurs gives rise to voltage of waveforms. With the human body each cell at this present time is generating electrical impulses like a voltage generator‚ which is a basic source of all the bioelectric potentials. With these bioelectric potentials they produce ionic voltages produced by the coordination of electrochemical activity within numerous cells. When the cells are in line the charges tend to migrate through the
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cytoplasm are contained in the cell body. The axon starts from the cell body‚ dividing into smaller branches and then ends at the nerve terminals. The dendrites also branch from the cell body‚ receiving information from the other neurons. Axons from other neurons forms synapses at their ends‚ which cover the cell body and dendrites.(Myers‚ 2013)Neurons send messages by passing impulses through their axons. The axons have different lengths. They range between a fraction of an inch and three feet or more. A
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SYSTEMS 3. AFFERENT VS. EFFERENT NERVES. What does each do? 4. SOMATIC VS AUTONOMIC NERVOUS SYSTEM What does each do? Which is involuntary? 5. SYMPATHETIC VS PARASYMPATHETIC What are some things that happen when you get scared? When you have just had a big meal? 6. Draw the Graphic Organizer for the nervous system 7. ANATOMY OF A NEURON with a MYELIN SHEATH [pic] |Nerve Part |Function
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retina. It must then pass through the inner layers of the retina to reach the photoreceptive layer of rods and cones. 2. When the photoreceptors are stimulated they transmit impulses to the bipolar cells that project to the ganglion cells of retina. 3. The axons from the ganglion cells converge at the optic disc to form optic nerve which enters the cranial cavity through the optic foramen. At the optic disc these axons acquire a myelin coat from oligodendrocytes of the CNS. 4. The optic chiasm is formed
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commonly used in literature when describing the neurological disease that is MS. MS is a disease of the central nervous system caused by a degeneration of the myelin sheath that insulates the nerves who’s function are to carry nerve impulses around the body. This inevitably results in dysfunction of neurological impulses and therefore neurological symptoms. (Goodman & Samkoff 2014) It is described as being an immune mediated disease with both genetic and environmental factors influencing its development
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Homeostasis The conditions inside our body must be very carefully controlled if the body is to function effectively. Homeostasis is the maintenance of a constant internal environment. The nervous system and hormones are responsible for this. One example of homeostasis is the concentration of carbon dioxide in the blood being carefully controlled. Here are some of the other internal conditions that are regulated: Body temperature This is controlled to maintain the temperature at which the
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helps the body communicate external environmental factors via electrical impulses that are transmitted through cells called neurons. These neurons can be up to a meter long and target a specific effector which it will help
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System: Pathways • Afferent Nerves • Also called sensory nerves‚ they carry information about the environment to brain and spinal cord • Efferent Nerves • Also called motor nerves‚ they carry information from the brain and spinal cord to the rest of the body • Neural Networks • Networks of cells that integrate sensory input and motor output Nervous System: Primary Divisions • Central Nervous System (CNS) • Brain and spinal Cord • Peripheral Nervous System (PNS) • Network of nerves connecting CNS to body
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