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The five sacral vertebrae remain separate until about 40 years of age; at that point they fuse to form one wedge-shaped bone.
Q31: Menisci are pillowlike structures formed of synovial
Q37: The basic ingredient in the skin that
Q45: Convection is responsible for most of the
Q54: structure that enables air pressure to be
Q57: The striations seen in skeletal muscle cells
Q58: protein that directly prevents the formation of
Q82: Explain what characteristics of the neuron impact
Q90: Terminal hair is the coarse pubic and
Q96: Explain a way that the nerve cell
Q177: Which of the following is not a