Carbon contributes an electron, and Hydrogen contributes an electron. The sharing of a single electron pair is termed a single bond. When two pairs of electrons are shared, a double bond results, as in carbon dioxide.
Elements of nervous system involved in motor coordinationEdit. The red nucleus is mainly involved in motor coordination of the muscles of the shoulder and upper arm, but it has some control over the lower arm and hand as well.
The main function of a motor neuron is to convey output signals to muscles for joint control.This involves 'upper motor neurons' in the brain relaying signals to 'lower motor neurons' in the spinal cord, which in turn relay signals to skeletal muscles for joint control.Lower motor neurons are also involved in sympathetic function, such as blood pressure regulation.his involves 'upper motor neurons' in the brain relaying signals to 'lower motor neurons' in the spinal cord, which in turn relay signals to skeletal muscles for joint control. Lower motor neurons are also involved in sympathetic function, such as blood pressure regulation.