â¢ In grade 4 mathematics, seven of the 50 states included in the analysis set standards for proficiency (as measured on the NAEP scale) that were lower than the Basic performance on NAEP, 42 were in the NAEP Basic range, and one in the Proficient range. In grade 8 mathematics, 12 of 49 states included in the analysis
noun, plural: skeletal muscles. A voluntary, striated (vertebrate) muscle that is associated with the skeleton, and thus move parts of the skeletal system. Supplement. The muscular system of the vertebrates is comprised of various muscles.
Skeletal muscle is a tissue muscle, which is attached to the bone. It consists of fibers grouped resemble a mixture of dark and light stripes along the bone running. These muscles are responsible for contraction and relaxation, when a person moves. Skeletal muscles are the muscles that can we see and feel with our skin. A skeletal muscle is considered to be a single unit within the muscular system of the body. Skeletal muscle works with the nervous tissue, connective tissue or blood and vascular tissue. Skeletal muscles vary in different sizes and shapes and the arrangement of the muscle fibers.