Mblex Study Guide
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| Sensory nerves that link sensory receptors with the central nervous system and transmit sensory information. | Afferent Nerves
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| A division of the Peripheral Nerv. Syst. composed of nerves that connect the central nervous system to the glands, heart, & smooth muscles to maintain the internal body environment. | Autonomic Nervous System
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| Twelve pairs of these transmit information to and from the sensory organs of the face and the muscles of the face, neck, and upper shoulders | Cranial Nerves
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| A cutaneous skin section supplied by a single spinal nerve | Dermatome
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| Motor nerves that link the CNS to the effectors outside it and transmit motor impulses. | Efferent Nerves
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| Sensory receptors that detect itch and tick sensations and temperature changes. | Free Nerve Endings
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| Sensory receptors that detect changes in posture, mvmt, temperature, or other mechanical forces | Mechanical Receptors
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| Nerves that contain sensory and motor axons | Mixed Nerves
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| A disease that usually affects muscles in the face, lips, tongue, neck & throat, which are innervated by the cranial nerves, but that can affect any muscles group. | Myasthenia Gravis
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| A skeletal muscle or group of skeletal muscles that receive motor axons from a particular spinal nerve. | Myotome
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| A bundle of axons, dendrites or both. | Nerve
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| Sensory receptors that detect painful and intense stimuli | Nociceptors
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| The energy conservation & restorative system associated with the relaxation response | Parasympathetic Nervous System
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| The system of somatic & autonomic neurons outside the central nervous system. Comprises the afferent & efferent division. | Peripheral Nervous System
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| A network of interwining nerves that innervates a particular region of the body. | Plexus
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| A viral infection, first of the intestines and then of the anterior horn cells of the spinal cord. | Polio
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| Sensory receptors that provide the body with information about position, mvmt, muscle tension, joint activity and equilibrium | Proprioceptors
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| An automatic involuntary reaction to a stimulus | Reflex
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| A system of nerves that keeps the body in balance with it's external environment by transmitting impulses among the central nervous system, skeletal muscles and skin | Somatic Nervous System
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| Thirty-one pairs, make sensation and movement possible in the body. | Spinal Nerves
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| The part of the autonomic nervous system that provides for most of the active function of the body, fight or flight... | Sympathetic nervous system
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| Sensory Receptors that detect changes in temperature | Thermal Receptors
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| Mechanical Receptors that detect change in pressure, mvmt, temperature, or other mechanical forces | Mechanoreceptors
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| A Mechanical Receptor, A corpuscle that senses brief touch, pressure & high frequency vibrations. | Pacinian (Lamellated) Corpuscles
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| A Mechanical Receptor, corpuscle/touch receptor found in the hairless portion of the skin, mainly on the palms, fingertips, soles of feet, eyelids, lips, tongue & genitals. Can identify exact location of touch | Meissner's Corpuscles
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| Mechanical Receptor, a plexus which is a network of dendrites that surrounds hair follicles. | Hair Root Plexuses
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| Mechanical Receptor, touch & pressure receptor Recognizes heavy & continuous touch, pressure, steady position, & direction of mvmt. | Ruffini's End-organs
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| Mechanical Receptor, disks that can be found in hairless portions of the skin that function in discriminative touch. | Merkel's Disks
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| Proprioceptor: Found primarily in the belly of the muscle, monitor and respond to sudden and excessive lengthening, send signals via the spinal cord to inhibit actions in the antagonist muscle. | Muscle Spindles
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| Proprioceptor: Found in the tendons & musculotendinous junctions, respond to increase in tension. | Golgi Tendon Organs
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| AKA "inverse stretch reflex", a feedback mechanism that controls muscle tension by allowing for muscle relaxation. | Tendon Reflex
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| The pathway that the nerve impulse follows from the receptor through sensory neurons to the spinal cord, then back through motor neurons to the effector of the action | Reflex Arc
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| A protective contraction that results when a muscle is stretched suddenly or intensely | Stretch Reflex
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| A pathologic condition that causes partial or total paralysis of the facial muscles on one side as the result of inflammation or injury to the seventh cranial nerve. | Bell's Palsy
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| A pathologic condition that may arise 1 or two months after a viral infection. Person may develop tingling in the hands or feet, motor weakness, and a decrease in deep tendon reflexes. | Guillain-Barre' Syndrome
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| A self-limiting viral disease in which groups of vesicles appear along a cutaneous nerve distribution, usually on one side of the trunk. Also known as shingles | Herpes Zoster
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| Causes contagious viral infections that produce painful fluid filled blisters on the skin and mucous membranes. Outbreaks seem related to stress..divided into type 1 and type 2 | Herpes Simplex Virus
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| A pathologic condition of autoimmune or viral cause in which myelin degenerates in random areas of the CNS. Hard plaquelike lesions replace the destroyed myelin, impairs nerve conduction, weakness, diminished coordination, gait difficulties, incontinence | Multiple Sclerosis or Demyelination Disease
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| The inflammation or degeneration of the peripheral nerves | Neuropathy
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