1. Calcium carbonate minerals are the building blocks for the skeletons and shells of mini marine organisms. It is important to ocean creatures because they make their shells out of this material. Examples of animal products that are primarily of calcium carbonate include seashells, egg shells, pearls, and notably coral
<span>Of these choices, neuronal communication between the brain and the muscles of the leg is best conceptualized as electrical and chemical signaling.
The brain sends signals of the electrical and chemical type to reach the leg and move its muscles. Once these signals get to the muscles of the leg, they are moved into motion as a result of the brain "ordering" the leg to move so that a person could get up or get to another place.
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Along with neuropsychological assessment, brain imaging and recording techniques may be used to shed light on relationships between brain function and underlying abnormalities.
Brain imaging is technique used to image the structure (tumor or injury) and function (metabolic diseases and lesions) of the central nervous system.
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