Final answer:
The best title for Alyssa's paper on the function of the myelin sheath is "Understanding the Role of Myelin Sheath in Nerve Function" as it accurately describes the focus on how the myelin sheath affects nerve function.
Step-by-step explanation:
The best title for Alyssa's paper on the function of the myelin sheath is "Understanding the Role of Myelin Sheath in Nerve Function." This title clearly indicates the focus of the paper, which is to explore how the myelin sheath contributes to the functioning of nerves in the nervous system. The myelin sheath is a lipid-rich insulator formed by glial cells, specifically oligodendrocytes in the central nervous system (CNS) and Schwann cells in the peripheral nervous system (PNS). Its primary role is to increase the efficiency of electrical signal transmission along the axon. Conditions like PKU and multiple sclerosis, which involve myelin loss, highlight the sheath's critical importance to neuron operation.