網頁2024年7月26日 · A reflex arc is a simple nervous pathway which is responsible for the sudden reaction known as the reflex action. The afferent/sensory neurons are present in … 網頁One of the simplest reflexes is a stretch reflex. In this reflex, when a skeletal muscle is stretched, a muscle spindle in the belly of the muscle is activated. The axon from this receptor travels to the spinal cord where it synapses with the motor neuron controlling the muscle, stimulating it to contract. This is a rapid, monosynaptic (single ...

The Reflex Arc Components, Types, Importance

網頁3 years ago. the junctions between neurons through which the signals can be sent are called the chemical synapses. they produce some chemicals when electrical signals … 網頁2024年1月3日 · Modern definitions state that a reflex is an involuntary response of effector tissue caused by the stimulation of specific receptors. The reflex arc is the basic unit of a reflex, which involves neural pathways acting on an impulse before that impulse has reached the brain. calls garage thedford

Human nervous system - Reflex actions Britannica

網頁2024年1月17日 · The stretch reflex (myotatic reflex) is a muscle contraction in response to stretching within the muscle. This reflex has the shortest latency of all spinal reflexes. It is a monosynaptic reflex that provides automatic regulation of skeletal muscle length. When a muscle lengthens, the muscle spindle is stretched and its nerve activity increases. 網頁2016年8月20日 · Stimulus, sensory neuron, intermediary neuron, motor neuron and defector organ is the correct order of general reflex arc. Reflex arc starts with a stimulus. The … 網頁2024年1月17日 · reflex arc: A neural pathway that controls an action reflex. In higher animals, most sensory neurons do not pass directly into the brain, but synapse in the … calls from pc to phone free