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.
Movement programming stage. -The system's problem is organizing the motor system to make the desired movement. -Before producing a movement, the system must ready the lower level mechanisms in the brain stem and spinal cord for action and retrieve and organize a motor program.