What are nociceptors?
Nociceptors are sensory receptors of the peripheral nervous system. They are located at the end of the nerve cells that come from the dorsal root ganglium and the trigeminal ganglion. Nocieceptors are responsible for sending signals to the spinal cord and brain when damage to stimuli in the skin, mucous membranes, muscles, joints and organs are detected. They are also known as pain receptors because they create a feeling of pain.
The pain may be caused by a number of influences such as extreme temperatures, chemical exposures or physical force. The measure to which the pain is felt depends on the sensitivity of nociceptors. The receptors must be detected a certain level of stimulation to send a nerve pulse to the central nervous system.
There are several types of nociceptors. Some respond to specific stimuli, while others respond to several types of stimuli. For example, thermal nociceptors respond to hot and low temperatures, and mechanical noc -cícíse react to intensive pressure. On the other side of the silent nociceptThe steers become active when the tissue becomes ignited. Initially, they respond only to chemicals released during inflammation. Once activated, they become sensitive to thermal and mechanical voltages. Polymodal nociceptors immediately respond to thermal, mechanical and chemical stresses.
When a face pain receptor is stimulated, the signal is sent to the trigeminal ganglion located in the brain. When the receptor of the pain in any other part of the body is stimulated, the signal goes to the ganglion of the back root, located next to the spinal cord. The stimulus is usually a certain type of tissue damage such as burn or cut.
After the pain receptor detects tissue damage, the receptor is subject to changes that change the chemical environment. This changes the potential of the membrane, which is the jerozoic of the voltage between the interior and the external receptor that creates the receptor potential. This signal is sent by axon to the Synapse throughI know several action potentials. Once the signal reaches the synapses, the chemicals known as synaptic transmitters are released. The neighboring nerve cell carries a signal after interaction with synaptic transmitters.
speed at which a signal can be measured. The electrode and recording equipment can be used to introduce voltage in the receptor and detect the resulting action potential in the body of the cells. By measuring the distance between the receptor and the cellular body and the time that requires the action potential for arrival, the speed of the line can be determined. For thermal and mechanical pain receptors, the speed of leadership is usually 7 to 89 miles per hour (about 11 to 143 kilometers per hour). For receptors, polymental and silent pain speed is usually less than 7 miles per hour (about 11 kilometers of hour).