reflex arc meaning
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- Medical Definition of REFLEX ARC. : the complete nervous path that is involved in a reflex.eflex arc. noun. : the complete nervous path that is involved in a reflex.
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reflex arc reflex arc. ( 1 physiology) the neural pathway over which impulses travel to produce a reflex action, consisting of at least one afferent (receptor) and one efferent (effector) neuron. Trends. ( 2 physiology) the neural pathway over which impulses travel to produce a reflex action, consisting of at least one afferent (receptor) and one efferent (effector) neuron.
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reflex arc The route followed by nerve impulses in the production of a reflex act, from the peripheral receptor organ through the afferent nerve to the central nervous system synapse and then through the efferent nerve to the effector organ.eflex arc. the circuit traveled by impulses producing a reflex action: from the receptor organ, through the afferent nerve, nerve center, efferent nerve, to the effector organ.
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Describe the reflex arc? Answered by The Community. Making the world better, one answer at a time. Reflex arc is the path of impulse that travels from receptor (ex. skin) to spinal cord through sensory nerve and from spinal cord to effectors (ex. muscles) through motor nerve.This impulse helps us to perform reflex action.he somatic reflex arc is a neural circuit that travels through the spinal cord. It allows the body to respond to the stimulus before the brain interprets the message/ impulse … .
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acquired reflex axon reflex. A reflex that does not involve a complete reflex arc and hence is not a true reflex. Its afferent and efferent limbs are branches of a single nerve fiber, the axon (axon-like dendrite) of a sensory neuron. An example is vasodilation resulting from stimulation of the skin.
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reflex Nerve pathway of a simple reflex. When the sensory nerve ending is stimulated, a nerve impulse travels along a sensory (afferent) neuron to the spinal cord. Here an association neuron transfers the impulse to a motor (efferent) neuron.ough reflex the sequence of events initiated by the sensitivity of the lining of the airways and mediated by the medulla as a consequence of impulses transmitted by the vagus nerve, resulting in coughing, i.e., the clearing of the passageways of foreign matter.
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Test Bank Of Essentials of Anatomy And Physiology 7th Edition by Martini Bartholomew Usually there are five (5) parts of a reflex arc (see text): 1  Receptor-sense organ in skin, muscle, or other organ. 2  Sensory neuron-carries impulse towards CNS. 3  Interneuron-carries impulse within CNS.4  Motor neuron-carries impulse away from CNS. 5  Effector-structure by which animal responds (muscle, gland, etc).sually there are five (5) parts of a reflex arc (see text): 1  Receptor-sense organ in skin, muscle, or other organ. 2  Sensory neuron-carries impulse towards CNS. 3  Interneuron-carries impulse within CNS.
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reflex noun (ˈriːflɛks) 1. 1  an immediate involuntary response, esp one that is innate, such as coughing or removal of the hand from a hot surface, evoked by a given stimulus. ( as modifier): a reflex action See also reflex arc.
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reflex arc The impulse originates in a receptor at the point of stimulation, passes through an afferent neuron or neurons to a reflex center in the brain or spinal cord, and from the center out through efferent neurons to the effector organ, where the response occurs.. the route followed by nerve impulses in the production of a reflex act, from the peripheral receptor organ through the afferent nerve to the central nervous system synapse and then through the efferent nerve to the effector organ.
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- Definitions. ( 1 physiology) the neural pathway over which impulses travel to produce a reflex action, consisting of at least one afferent (receptor) and one efferent (effector) neuron. Trends. ( 2 physiology) the neural pathway over which impulses travel to produce a reflex action, consisting of at least one afferent (receptor) and one efferent (effector) neuron.
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- The nerve impulse travels through the reflex arc.   It travels from the sensor through the sensory neurone, through the spinal cord and motor neurone to the effector muscle … . reflex arc will travel from the receptor (reactor to stimuli) to sensory neurons, to the interneurons which will respond (unlike the brain in conscious action) and send the … message to motor neurons which will operate the effector (carries out response to stimuli).
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reflex 1. (Physiology) a. an immediate involuntary response, esp one that is innate, such as coughing or removal of the hand from a hot surface, evoked by a given stimulus. b. (as modifier): a reflex action. See also reflex arc.
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- Human Reflexes. Purpose: This exercise is designed to familiarize the student with spinal and cranial nerve reflexes. Performance Objectives: At the end of this exercise the student should be able to: 1. Define the terms reflex and reflex arc.2.he calcaneal reflex or Achilles or ankle-jerk reflex is a stretch reflex that assesses the nervous tissue between (and including) the first two sacral segments. It can be elicited by sharply tapping the calcaneal tendon (just above the ankle) with the base of a Taylor hammer.
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- re·flex arc. 1. the route followed by nerve impulses in the production of a reflex act, from the peripheral receptor organ through the afferent nerve to the central nervous system synapse and then through the efferent nerve to the effector organ.2. a neural pathway that involes both the peripheral and central nervous systems.e·flex arc. 1. the route followed by nerve impulses in the production of a reflex act, from the peripheral receptor organ through the afferent nerve to the central nervous system synapse and then through the efferent nerve to the effector organ.
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- A reflex is a quick involuntary action. There are five steps to a reflex: the stimulus occurs, the sensory neurons sense the stimulus, it sends a message to your spinal cord (… it doesn't reach the brain right then), the spinal cord sends a message to your motor neurons, and the reflex occurs.se of the straw is not response to stimulus, and therefore not a reflex. Reflexes follow a Reflex ARC. The Arc is through the spinal cord. While the information gets sent to the brain (you know you touched something hot, or you are choking and coughing), the reflex totally by-passes the brain.
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- The reflex arc typically consists of five components (3): 1. The receptor at the end of a sensory neuron reacts to a stimulus.2. The sensory (afferent) neuron conducts nerve impulses along an afferent pathway towards the central nervous system (CNS). 3.The integration center consists of one or more synapses in the CNS. 4. A motor (efferent) neuron conducts a nerve impulse along an efferent pathway from the integration center to an effector.he reflex arc typically consists of five components (3): 1. The receptor at the end of a sensory neuron reacts to a stimulus.
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Reflexes This characteristic allows reflex actions to occur relatively quickly by activating spinal motor neurons without the delay of routing signals through the brain, although the brain will receive sensory input while the reflex is carried out.Analysis of the signal takes place after action has been taken.here are two types of reflex arc: autonomic reflex arc (affecting inner organs) and somatic reflex arc (affecting muscles).
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reflex arc binauricular arc the arc across the top of the head from one auricular point to the other. reflex arc the circuit traveled by impulses producing a reflex action: receptor organ, afferent nerve, nerve center, efferent nerve, effector organ in a muscle; see also reflex. Three-neuron reflex arc.Etymology: L, reflectere, to bend back, arcus, bow. a simple neurologic unit of a sensory neuron that carries a stimulus impulse to the spinal cord, where it connects with a motor neuron that carries the reflex impulse back to an appropriate muscle or gland. simple neurologic unit of a sensory neuron that carries a stimulus impulse to the spinal cord, where it connects with a motor neuron that carries the reflex impulse back to an appropriate muscle or gland.
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Reflexes 1 Reflexes, or reflex actions, are involuntary, almost instantaneous movements in response to a specific stimulus.  Reflex arcs which contain only two neurons, a sensory and a motor neuron, are considered monosynaptic. Examples of monosynaptic reflex arcs in humans include the patellar reflex and the Achilles reflex.
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Stretch reflex The stretch reflex (myotatic reflex) is a muscle contraction in response to stretching within the muscle. It is a monosynaptic reflex which provides automatic regulation of skeletal muscle length.When a muscle lengthens, the muscle spindle is stretched and its nerve activity increases. sudden stretch, such as tapping the Achilles' tendon, causes a reflex contraction in the muscle as the spindles sense the stretch and send an action potential to the motor neurons which then cause the muscle to contract; this particular reflex causes a contraction in the soleus-gastrocnemius group of muscles.
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Reflexes A reflex arc is a neural pathway that controls a reflex action. In higher animals, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord.hen a reflex arc consists of only two neurons in an animal (one sensory neuron, and one motor neuron), it is defined as monosynaptic. Monosynaptic refers to the presence of a single chemical synapse.
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reflex Photography sense is from noun sense meaning “reflection”. reflex ‎(plural reflexes) An automatic response to a simple stimulus which does not require mental processing.
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- Purpose: This exercise is designed to familiarize the student with spinal and cranial nerve reflexes. Performance Objectives: At the end of this exercise the student should be able to:1. Define the terms reflex and reflex arc.f the spinal cord is damaged, then reflex tests can help determine the area of injury. For example, motor nerves above an injured area may be unaffected, whereas motor nerves at or below the damaged area may be unable to perform the usual reflex activities.
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