Motor neurons are cells that carry information from the central nervous system to the muscles and glands, while sensory neurons send signals from body parts to the central nervous system. Sensory neurons are found over the body, such as in the skin, ears, eyes, nose and tongue. Interneurons in the central nervous system allow information to flow between motor and sensory neurons.Know More
The cell body of a neuron holds a nucleus and organelles that carry out basic cell functions, such as protein synthesis, transporting materials and producing energy. A neuron also has special parts that allow information to move. Dendrites are branch-like structures that receive signals. The axon, which often resembles a long tail, takes messages away from the cell. The axon ends in a terminal containing a chemical called a neurotransmitter, which allows the signal to move across the space between the cell that sends information and the cell that receives it. When axons and dendrites of different cells are bunched together, they create nerves. Ganglia are groupings of many neurons' cell bodies.
The processes conducted by nerve cells happen incredibly fast, in thousandths of a second. That is why the human body reacts so quickly to stimuli in the environment. A hand touching a hot stove is removed almost immediately so that serious injury does not occur.Learn more about Nerves
Motor neurons transmit signals to muscles and glands throughout the body. There are two major types: the somatic motor neurons that control voluntary muscle movements and the autonomic motor neurons that control involuntary muscle movements and glands. The autonomic motor neurons are further divided into the sympathetic and parasympathetic systems.Full Answer >
Motor nerves are bundles of nerve cells that control muscles. They originate in the spinal column and end at the muscles that they control. One motor nerve often controls several muscles.Full Answer >
According to Reading Row, fine motor skills refer to small movements made with the tongue, lips, fingers, hands, wrists, toes and feet while gross motor skills refer to movements made with large muscle groups, such as walking and jumping. Many activities require both fine and gross motor skills.Full Answer >
The thousands of nerve endings in the human foot supply sensory feedback to the central nervous system, according to the Canadian Federation of Podiatric Medicine. The foot has more nerve endings per square inch than anywhere else in the body. Nerves constantly are sensing characteristics of the surface underfoot.Full Answer >