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 nerve impulse from your foot to your leg is called a sensory nerve signal or proprioceptive feedback. It helps transmit information about sensations such as touch, pressure, and position to the brain.
The pathway that an impulse travels from your foot back to your leg is an example of a reflex arc. A reflex arc includes a sensory receptor (in this case, a receptor in your toe), sensory neuron, motor neuron, and effector (leg muscle). Some reflex arcs include interneurons. In other reflex arcs, a sensory neuron communicates directly with a motor neuron.
A good answer has been posted here: http://www.madsci.org/posts/1197305811.Ns.r.html The basic idea is that your brain has control over your reflexes, and so can suppress them when necessary.
The brain initiates a reflex response by sending signals down the spinal cord to the specific muscle or organ involved. However, the actual reflex action occurs at the level of the spinal cord, without the need for input from the brain. This allows for a quicker and more automatic response to potentially harmful stimuli.
the brain
because it is the cells
When stung by a bee a person will not feel any pain until the impulse reaches their brain. The brain is the center of a humans nervous system.
A nervous impulse begins in the dendrites of a neuron, travels through the cell body and axon, and then is passed on to the next neuron via a synapse. This sequence repeats until the impulse reaches its destination, such as a muscle or gland, where it triggers a response.
When you are stung by a bee you don't feel it until the impulse reaches your brain. The signal travels along your nerves to your spinal cord, where it is turned into a chemical message and sent to your brain.
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.
A reflex arc doesn't go all the way up to the brain. Thus it NEVER becomes part of the thought process.
During a pain withdrawal reflex impulses are sent through different nerves and to the spinal cord. This reflex does not make it to the brain but only to the spinal cord. We call this involuntary action because we dont control reflexes. The sensory neurons are the first to recieve the impulse, then they travel to the interneurons, or associative neurons, and then they go to the motor neurons which carries the impulse to the central nervous system. Then the effector is the response, so in this case your musscle will contract.
The initial sensory receptor detects a change e.g temperature. This is sent as an electrical impulse via a series of sensory receptors to the spine, if there is a problem a reflex occurs. If there is no problem the impulse is transmitted to the brain through the spinal cord.
The nerve impulse from your foot to your leg is called a sensory nerve signal or proprioceptive feedback. It helps transmit information about sensations such as touch, pressure, and position to the brain.
The simplest pathway of an impulse involves the sensory neuron transmitting a signal to the interneuron in the spinal cord, which then relays the signal to the motor neuron, causing a response in a muscle or gland. This pathway is known as a reflex arc and allows for rapid, automatic responses to stimuli without involving the brain.
The vomiting impulse is controlled by the brain stem, specifically the vomiting center located in the medulla oblongata. Signals from various parts of the body, such as the stomach, intestines, and vestibular system, are sent to the brain stem to trigger the vomiting reflex.