ISIS death toll from MOAB strike in Afghanistan rises to 94 according to local reports. Last Thursday, the United States deployed its largest non-nuclear weapon against an underground ISIS stronghold in Afghanistan.
The myelin sheath is a layer of fat and protein that covers the axon of a neuron, or nerve cell.The axon, which is a long, thin projection, is designed to carry electrical signals from a neuron to other cells.he myelin sheath is a layer of fat and protein that covers the axon of a neuron, or nerve cell.
myelin sheath. A Dictionary of Biology | 2004. Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. myelin sheath (medullary sheath) The layer of fatty material that surrounds and electrically insulates the axons of most vertebrate and some invertebrate neurons.The myelin sheath enables a more rapid transmission of nerve impulses (at speeds up to 120 mâs). It consists of layers of membrane derived from Schwann cells.yelin sheath. A Dictionary of Biology | 2004. Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. myelin sheath (medullary sheath) The layer of fatty material that surrounds and electrically insulates the axons of most vertebrate and some invertebrate neurons.