nociceptors and mechanoreceptors (respond to touch, temp and pain)
The nerve impulse typically travels from the sensory neuron to the spinal cord, where it is processed by interneurons, and then to the motor neuron to elicit a response from the effector organ or muscle.
The speed of conduction through a reflex arc is slower than the speed of conduction of an action potential along an axon because a reflex arc involves multiple synapses and processing steps in the spinal cord or brain before generating a response, which takes more time. In contrast, in a single axon, action potentials can travel faster due to the myelin sheath that speeds up conduction.
No, during a reflex arc, the nerve impulse does not reach the brain before the reflex action occurs. Instead, the impulse travels from the sensory receptor through the spinal cord to the motor neurons, which directly trigger a response. This allows for a quick reaction to stimuli, bypassing the brain for immediate response. The brain may become aware of the stimulus and the reflex action afterward.
The short pathway that carries the impulse for an automatic response is called a reflex arc. It involves sensory neurons, interneurons in the spinal cord, and motor neurons to quickly produce a reflex action in response to a stimulus, bypassing the brain.
The time it takes for an impulse to travel through a reflex arc typically ranges from about 20 to 50 milliseconds. This duration can vary based on factors such as the length of the reflex arc and the type of nerve fibers involved. Generally, faster impulses travel along myelinated fibers, while slower impulses travel along unmyelinated fibers. Overall, the speed is quick enough to allow for rapid reflexive responses to stimuli.
The nerve impulse typically travels from the sensory neuron to the spinal cord, where it is processed by interneurons, and then to the motor neuron to elicit a response from the effector organ or muscle.
The speed of conduction through a reflex arc is slower than the speed of conduction of an action potential along an axon because a reflex arc involves multiple synapses and processing steps in the spinal cord or brain before generating a response, which takes more time. In contrast, in a single axon, action potentials can travel faster due to the myelin sheath that speeds up conduction.
No, during a reflex arc, the nerve impulse does not reach the brain before the reflex action occurs. Instead, the impulse travels from the sensory receptor through the spinal cord to the motor neurons, which directly trigger a response. This allows for a quick reaction to stimuli, bypassing the brain for immediate response. The brain may become aware of the stimulus and the reflex action afterward.
Reflex Arc
The short pathway that carries the impulse for an automatic response is called a reflex arc. It involves sensory neurons, interneurons in the spinal cord, and motor neurons to quickly produce a reflex action in response to a stimulus, bypassing the brain.
The time it takes for an impulse to travel through a reflex arc typically ranges from about 20 to 50 milliseconds. This duration can vary based on factors such as the length of the reflex arc and the type of nerve fibers involved. Generally, faster impulses travel along myelinated fibers, while slower impulses travel along unmyelinated fibers. Overall, the speed is quick enough to allow for rapid reflexive responses to stimuli.
A reflex arc doesn't go all the way up to the brain. Thus it NEVER becomes part of the thought process.
The speed of impulse in a reflex arc can vary, but it is usually very fast, allowing for quick responses to stimuli. In general, impulses can travel at speeds of up to 100 meters per second along myelinated nerve fibers.
They are neurons and not neutrons. You have afferent neuron. Then you have intermediate neuron and then you have the efferent neuron in the reflex arc.
They are neurons and not neutrons. You have afferent neuron. Then you have intermediate neuron and then you have the efferent neuron in the reflex arc.
A reflex arc involves the following components:The receptor is the part of the neuron (usually a dendrite) that detects a stimulus.The sensory neuron transmits the impulse to the spinal cord.The integration center involves one synapse (monosynaptic reflex arc) or two or more synapses (polysynaptic reflex arc) in the gray matter of the spinal cord.A motor neuron transmits a nerve impulse from the spinal cord to a peripheral region.An effector is a muscle or gland that receives the impulse from the motor neuron. In somatic reflexes, the effector is skeletal muscle. In autonomic (visceral) reflexes, the effector is smooth or cardiac muscle, or a gland.
The name for the path a reflex follows through the body is called a reflex arc. This arc involves sensory neurons, interneurons in the spinal cord, and motor neurons that work together to produce a rapid response without input from the brain.