Myelin is important in allowing electrical signals to be transferred from one axon to another adjacent axon insulating axons and increasing the conduction velocity of action potentials maintaining the ionic balance in the environment surrounding the axon absorbing damaged tissue or invading organisms

The correct answer for the fill in the blank is insulating axons and increasing the conduction velocity of action potentials.

Myelin sheath is an insulating sheath present around the axon of almost all nerve fibers. This insulating sheath contains breaks in between, which are called Nodes of Ranvier. It helps in increasing the conduction velocity of action potential because impulses jump from one Node of Ranvier to the next. Due to this, action potential travels very fast.

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !

the supermassive black hole is in the middle of the galaxy.