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_________________________________ groups of similar cells that perform a common function

__________–pentose sugar found in DNA

________-brain and spinal cord

______________-neuron process that carries impulses away from the nerve cell body; efferent process; the conducting portion of the nerve cell

____________-a medical condition in which the bones become brittle and fragile from loss of tissue; result of hormonal changes, or deficiency of calcium or vitamin D

___________-the bundle of nervous tissue that runs from the brain to the lumbar vertebrae and provides a conduction pathway to and from the brain

_________________________________ -the smallest contractile unit of muscle; extends from one Z disc to the next

________-toward the head or upper body region

Identify and click on the rectus femoris.

________________-internal layer of skeletal bone