Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
the layer of fatty material that is usually only surrounds the axon of a neuron. It is made from an electrically insulating substance called myelin and helps to increase the speed by which nerve impulses travel along the nerve.
small units of DNA that contain hereditary information that is passed from one generation to the...
simple epithelium with elongated, cells that lines the stomach, small intestine, urethra, vas...
biological classification group (taxon) that is divided into species (the plural of genus is...
tissue that covers the surfaces of the body (the skin) and lines the ducts of the gut.