According to the BBC, the function of nerve cells is to transmit electrical messages and signals throughout the body. There are three types of nerve cells. Sensory neurons collect and transmit information about stimuli, such as sound, light and temperature. Motor neurons transmit electrical impulses from the brain to the rest of the body and are connected to sensory neurons by specialized cells called association neurons.Know More
The human body contains millions of nerve cells that transmit electrical impulses almost instantaneously. All nerve cells have a body and two kinds of fibers extending away from the body. Fibers called dendrites transmit electrical impulses to the cell body, and axon fibers collect the impulses from the body and transmit them toward the next cell in the given neural pathway. The BBC reveals that both types of fibers reach a maximum length of one meter.
Adjacent nerve cells, however, do not touch. When a nerve impulse reaches the terminus of a given nerve cell, it must bridge the tiny gap separating that cell from the next. At this point, the first neuron produces a chemical called a neurotransmitter that spreads out and activates the dendrites of the second cell. This activation produces another electrical impulse, which travels along the cell's axons before the transmission cycle begins anew.Learn more about Nerves
Reference.com details that the function of free nerve endings is to sense temperature, pressure and pain. These nerves are known as thermoreceptors, mechanoreceptors and nociceptors respectively.Full Answer >
The optic nerve, also called cranial nerve II or the second cranial nerve, is responsible for carrying images from the eyes to the brain. The transfer of visual information begins in the retina and travels to the brain's visual centers with the help of electrical impulses.Full Answer >
The abducens nerve is the sixth cranial nerve. Its main function is to control the lateral rectus muscle of both eyes. By innervating the lateral rectus muscle, the abducens nerve helps move the pupil of the eye, according to Healthline.Full Answer >
The cochlear nerve, also known as the acoustic or auditory nerve, transfers auditory information from the inner ear to the brain. The cochlear nerve connects to the cochlea, which is one of the parts of the inner ear responsible for hearing.Full Answer >