What is the Nervous System? The nervous system is an organ system that is a network of nerves and fibers that nerve impulses between different parts of the body‚ and is responsible for sending‚ receiving and processing. All the organs and functions rely upon these nerve impulses to function. It’s an example of the body’s master control unit. The nervous system is the control and communication system of your body. its job is to send and receive messages to your body. the nervous system controls
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The homeostatic capability of the body involves an internal balance in order for the body to properly function. This system is known as dual innervations. These are innervations affected by two systems known as the parasympathetic and sympathetic nerve systems. The effector organs for the sympathetic system include: the smooth muscle of blood vessels‚ lungs‚ viscera‚ scalp‚ pupils‚ the heart‚ and glands. The effector organs for the parasympathetic system include: lacrimal glands‚ salivary glands
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Data Table 1 – Epithelial Tissue Observations TISSUE TYPE OBSERVATIONS Simple Squamous single layer‚ flattened cells Simple Cuboidal single layered‚ cube shaped cells Simple Columnar (stomach) single layered‚ elongated cells Simple Columnar (duodenum) long columns in “S” shapes Stratified Squamous (keratinized) many layers‚ top cells flattened Stratified Squamous (non-keratinized) flat long strands with nucleus Pseudostratified Ciliated Columnar cells together in a column
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16‚ 2014 A Case of Spinal Cord Injury 1. Describe the functional anatomy of the spinal cord using the following terms: white matter‚ gray matter‚ tracts‚ roots and spinal nerves. The spinal cord consists of a superficial White matter and a deep Gray matter. The white matter consists of myelinated axons‚ which form nerve tracts and the Gray matter consists of neuron cell bodies‚ dendrites and axons. The white matter in each half of the spinal cord is organized into ventral‚ dorsal and lateral
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Describe the role of the CNS with regard to swallowing. What is the stimulus? Nerve signals tell the brain what is the right thing to eat such as temperature and size and then causes saliva to be produced and moistens the food and forms the bolus which is then pushed down the throat after the CNS send the signal to contract smooth muscle 6. a. What are the components of the ANS (long) neural reflexes? Vagus nerve which supplies the parasympathetic fibers to most parts of the GI.
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the eyeball that surrounds the optic nerve at the back of the eye. It’s a leather-like tissue‚ that extends around the eye and give the eye its shape. Choroid:The choroid is between the
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Biology II 30 March 2012 The Comparison of Nervous Systems in Humans‚ Cnidarians‚ Flatworms‚ and Annelids The nervous system is one of the most important organ systems in the body. It is in charge of all of the things that happen within the body. Being responsible for receiving sensory input from internal and external stimuli‚ integrating and processing information‚ and generating output‚ it would be hard to survive without a nervous system; however‚ there are different types of nervous systems
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Published in 2011 by Britannica Educational Publishing (a trademark of Encyclopædia Britannica‚ Inc.) in association with Rosen Educational Services‚ LLC 29 East 21st Street‚ New York‚ NY 10010. Copyright © 2011 Encyclopædia Britannica‚ Inc. Britannica‚ Encyclopædia Britannica‚ and the Thistle logo are registered trademarks of Encyclopædia Britannica‚ Inc. All rights reserved. Rosen Educational Services materials copyright © 2011 Rosen Educational Services‚ LLC. All rights reserved. Distributed exclusively
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still have influence on simple reflexes. Reflexes can be an indication of nervous system health. When the reflexes are not acting properly or are absent‚ it can tell a physician if there may be a problem with the nervous system or in the region of nerves. Testing reflexes can tell a physician if something is wrong before the patient shows other noticeable signs of nervous system damage. (120 x〖10〗^(-2) m)/0.154s - 0.002s = 7.79m/s
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visual pigments) are the cones since the subject is present in light (colour). The cones detect and then covert the stimulus into an action potential. The eye obtains the physical stimulus in the form of light and then directs it as an electrical impulse to the brain‚ which would interpret the signal as an image. However‚ vision is a much more difficult process as the retina‚ which contains the rods or cones are located at the back of the eye‚ thus the
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