emotions‚ hunger and thirst. Our spinal cord extends several types of nerve fibers from the brain acts like a switching and relay terminal for the peripheral nervous system as is stated in Mosby’s Dictionary. The 12 pairs of cranial nerves emerge directly from the brain Sensory nerves and motor nerves of the peripheral system leave the spinal cord separately between the vertebrae but unite to form 31 pairs of spinal nerves containing sensory fibers and motor fibers. More than 10 billion neurons
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1. List the basic elements of a Fiber-Optic communication system • A fiber optic transmission strand that can carry the signal. • A source of invisible infrared radiation modulated to impress digital data or an analog signal on the light beam. • A photosensitive detector to convert the optical signal back into an electrical signal at the receiver. • Optical connectors at the light source-to-cable interface and at the cable-to-photo detector interface. 2. List Five advantages of an optical
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Trigeminal nerve The trigeminal nerve is the fifth of twelve pairs of cranial nerves enervating the face and head‚ and is denoted by the Roman Numeral V. It has three divisions which enervate the forehead and eye (ophthalmic V1)‚ cheek (maxillary V2) and lower face and jaw (mandibular V3). The trigeminal nerves function in sensing facial touch‚ pain and temperature‚ as well as controlling muscles used for chewing. The trigeminal nerve functions should be distinguished from the facial nerve (cranial
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Crossing Crossing is a short story written by Mark Slouka in 2009. The story is concerned with the relationship between a father and his son. Some fathers like to take their sons out camping to create a closer bond and that is exactly what the father wishes to obtain‚ but most fathers would never dream of taking their sons out on dangerous trips. However this is the case in Mark Slouka’s short story. By the use of a description of the nature versus man Slouka presents the struggle of the father.
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Crossing Nothing is stronger than a bond between a child and a parent. In all cultures the parent educates the child with skills and values and these remain with the child all his or her life. The reason why a parent has such impact on its child is because of trust. A relationship build on trust is the strongest and every parent wants to have such a relationship. This is the kind of relationship the main character in the short story Crossing (2009) by Mark Slouka is trying to build with his son.
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Cranial Nerves The brain and spinal cord (CNS) are connected to parts of the body by nerves and cell bodies called the peripheral nervous system. The PNS contains all of the nervous tissue outside the brain and spinal cord. Afferent (sensory) nerve fibers-conduct nerve impulses toward the CNS Efferent (motor) nerve fibers-conduct nerve pulses away Sensory Somatic System – Carries nerve impulses from the senses to the CNS and also carries the impulses to the skeletal muscles and glands
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Fiber Optics History of Fiber Optics History Of Fiber Optics In 1870‚ John Tyndall‚ using a jet of water that flowed from one container to another and a beam of light‚ demonstrated that light used internal reflection to follow a specific path. • Alexander Graham Bell patented an optical telephone system‚ which he called the Photophone • He dreamed of sending signals through the air‚ but the atmosphere didn’t transmit light as reliably as wires carried electricity. • During the 1920s‚ John
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The vagus nerve is the tenth of the twelve brain nerves. The vagus nerve contributes to the feelings associated with infections such as appetite‚ fatigue and induction of disease behavior. It extends from the brainstem to the abdomen‚ with branches in the neck‚ thorax and abdomen 68. The vagus nerve is part of the autonomic nervous system‚ has efferent fibers‚ ascending signals from the brain to the peripheral organs‚ as well as afferent sensory fibers‚ and transmits information from the peripheral
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The Crossing In this passage from the novel The Crossing‚ Cormac McCarthy uses imagery and word choice to describe the dramatic religious experience of his main character who becomes conscious of the spiritual unity of every soul in the natural world‚ because of the death of a she-wolf he had formed a connection with. McCarthy conveys to the reader that the main character is going through an intense‚ and somewhat frightening‚ spiritual experience through his religious imagery and dramatic word
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Nerve Physiology Cells in the Nervous System * Two types * Nerve cell or neurons * Glial cells or neuroglia Neurons * Functional unit of nervous system * Have anatomically and physiologically specialized for communication and signaling * Neurocrene * 10 billion neurons in nervous system * Once they degenerate they don’t usually go REGENERATION Neuroglia * Nerve glue * Supportive cells * 10x greater of your neurons * Not involve in impulse
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