Podcast
Questions and Answers
In a myotatic reflex, which structure directly receives the initial sensory input from the muscle spindle?
In a myotatic reflex, which structure directly receives the initial sensory input from the muscle spindle?
Which part of the spinal cord acts as the integrating center for the myotatic reflex?
Which part of the spinal cord acts as the integrating center for the myotatic reflex?
In the reflex arc, the signal to contract the muscle is transmitted through which structure?
In the reflex arc, the signal to contract the muscle is transmitted through which structure?
Cell bodies of the sensory neurons involved in the myotatic reflex are located in which structure?
Cell bodies of the sensory neurons involved in the myotatic reflex are located in which structure?
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Which structure acts as the effector in the myotatic reflex?
Which structure acts as the effector in the myotatic reflex?
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Flashcards
Sensory Receptor
Sensory Receptor
A specialized structure that detects stimuli, such as touch, pressure, or temperature.
Afferent Neuron
Afferent Neuron
A neuron that carries signals from the sensory receptors to the spinal cord.
Efferent Neuron
Efferent Neuron
A neuron that carries signals from the spinal cord to the muscle, causing it to contract.
Integrating Center
Integrating Center
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Extensor Muscle
Extensor Muscle
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Study Notes
Myotic Reflex Arc Diagram
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Sensory Receptor: Specialized nerve endings in the extensor muscle sensitive to stretch (muscle spindle).
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Afferent Neuron: Sensory neuron carrying the signal from the sensory receptor towards the spinal cord. Its cell body is located in the posterior root ganglion.
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Posterior Root Ganglion: Contains the cell bodies of sensory neurons; a swelling on the posterior root of the spinal nerve.
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Integrating Center (Cross-Section of Spinal Cord): The region within the spinal cord where the sensory input is processed and the motor response is initiated. Specifically, the anterior horn of the spinal cord contains the cell bodies of motor neurons.
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Anterior Horn: Part of the spinal cord gray matter containing cell bodies of motor neurons, which send signals out of the spinal cord.
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Efferent Neuron: Motor neuron carrying the signal away from the integrating center (spinal cord) to the effector (extensor muscle).
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Spinal Nerve: Connects the sensory and motor neurons to the rest of the nervous system. It is formed by the bundled axons of the afferent and efferent neurons.
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Extensor Muscle: Muscle that contracts as the result of the reflex; causing the limb to extend.
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Description
Explore the myotic reflex arc through an interactive quiz. Learn about the function of each component including sensory receptors, afferent neurons, and the integrating center within the spinal cord. Test your knowledge on the pathways involved in reflex actions.
