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Erin is 90 years old. She has relatively good health and is fully mobile. Most of Erin's blood relatives lived to a much later age than most of their same-age friends. Which of the following genes might be responsible for this?
Schwann Cells
Cells in the peripheral nervous system that produce myelin, a substance that insulates nerve fibers and speeds up nerve impulse transmission.
Epineurium
Connective tissue sheath surrounding a nerve.
Fascicles
Bundles of muscle fibers encased in a protective sheath, contributing to the structure and function of muscles.
Phrenic Nerves
Nerves that run from the cervical spinal cord to the diaphragm, playing a crucial role in stimulating its contraction and thus enabling breathing.
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