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Reflex arc, neurological and sensory mechanism that controls a reflex, an immediate response to a particular stimulus. The primary components of the reflex arc are the sensory neurons that receive stimulation and in turn connect to other nerve cells that activate muscle cells, which perform the reflex action.
- Effector
In the immune system, effector cells are the relatively...
- Interneuron
reflex arc. In reflex arc …consists of the receptor, an...
- Stimulus
In reflex arc …immediate response to a particular stimulus....
- Effector
Apr 29, 2023 · A reflex arc is a pathway that a nerve impulse follows during a reflex action. Reflex arcs are highly beneficial in situations that require a quick response and do not involve conscious thought. A typical example of a reflex action is the patellar reflex (‘knee jerk’ response), which occurs when the patellar tendon is tapped.
Apr 23, 2024 · The reflex arc is a pathway that governs the operation of reflexes. It is composed of nerve pathways that travel through the nervous system. It consists of several components: a receptor, sensory neuron, interneuron, motor neuron, and effector.
Reflexes, or reflex actions, are involuntary, almost instantaneous movements in response to a specific stimulus. Reflex arcs that 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.
A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.
the junctions between neurons through which the signals can be sent are called the chemical synapses. they produce some chemicals when electrical signals reach them. these chemicals are neurotransmitters that can bind to the receptors on the motor neuron. this is like an electrochemical circuit which generate electrical signals in the motor ...
Describe the following reflexes and name all components of each reflex arc: stretch reflex, (Golgi) tendon reflex, flexor (withdrawal) reflex, and crossed-extensor reflex. Reflexes can be spinal or cranial, depending on the nerves and central components that are involved.
