The three-neuron arc is the most common and consists of the afferent neurons, interneurons, and the efferent neurons.
Afferent neurons conduct impulses to the CNS from the receptors.
Efferent neurons conduct impulses from the CNS to effectors (muscle or glandular tissue).
Two-neuron arc is the simplest form, fastest responding and consists of afferent and efferent neurons. Example is the knee-jerk reflex.
An effector is a part of the body (such as a muscle or gland) that carries out the response in a reflex arc. In a reflex arc, when a stimulus is detected by a sensory receptor, a message is sent via a sensory neuron to the spinal cord, where it is processed, and then a message is sent via a motor neuron to the effector causing a response.
The sensory receptor, sensory neuron, motor neuron, and effector involved in a reflex form a reflex arc. This is a neural pathway that controls a reflex action in response to a stimulus without conscious thought.
The structure of a neuron is adapted for its role in the reflex arc through specialized components like dendrites to receive sensory input, the cell body to process information, and the axon to transmit signals quickly and efficiently. Additionally, the myelin sheath insulates the axon for rapid signal conduction. This overall architecture helps the neuron to rapidly detect and respond to stimuli in reflex actions.
Damage to the spine can interrupt the transmission of nerve impulses involved in the reflex arc, leading to impaired or absent reflex responses. Depending on the location and severity of the damage, reflexes may be diminished, exaggerated, or completely absent. Physical therapy and rehabilitation techniques may help restore some function in reflex arcs affected by spinal damage.
A reflex arc begins with the stimulation of a sensory receptor such as those on the skin. The stimulus is then passed as an electrical impulse along sensory, relay and motor neurones (by-passing the brain) before reaching an effector orgen, like a muscle, which then responds to the stimulus.
A reflex arc includes components of both the central and peripheral nervous systems.
The brain is not one of the essential components of a reflex arc. Reflex arcs involve sensory receptors, afferent neurons, interneurons, efferent neurons, and effectors, but they do not involve the brain in the reflex loop.
Hormones have nothing to do in reflex arc.
reflex arc
To remember the stages of a reflex arc in chemistry, you can use the acronym "SAID" which stands for stimulus, afferent pathway, integration center, and efferent pathway, and then the response. This mnemonic can help you recall the order of events in a reflex arc.
your spinal reflex is controlled ny the nerve going from the spine to the brain in 1941 Anthony madrado die from slow spinal; reflexes
Muscles and glands are the possible effectors of a reflex arc
A sensory receptor is the type of neuron that begins a reflex arc.
A monosynaptic reflex arc does not require an interneuron. In this type of reflex arc, the sensory neuron communicates directly with the motor neuron in the spinal cord or brainstem, resulting in a quick and simple reflex response.
An effector is a part of the body (such as a muscle or gland) that carries out the response in a reflex arc. In a reflex arc, when a stimulus is detected by a sensory receptor, a message is sent via a sensory neuron to the spinal cord, where it is processed, and then a message is sent via a motor neuron to the effector causing a response.
Reflex Arc
what is the role of sensory and motor neurones in a reflex arc