Cells evict be thin, suave to cuboid to e keen-sightedate. Nervous tissue is also excitable, allowing the propagation of electrochemical signals in the form of nerve impulses that communicate between different regions of the body Figure 1.
The apical surface of this membrane is exposed to the external environment and is covered with dead, keratinized cells that help protect the body from desiccation and pathogens.
Handbook of Educational Ideas and Practices. The hyaluronan effectively traps available water to form the synovial fluid, a natural lubricant that enables the bones of a joint to move freely against one another without much friction.
Simple columnar-single layer of tall, cylindrical cells, each with a nucleus near the base.
What is remarkable is that the "uni-structural" level is not sufficient in describing the types of poorer essays. Sometimes called mucosae, these epithelial membranes line the body cavities and hollow passageways that open to the external environment, and include the digestive, respiratory, excretory, and reproductive tracts.
Publications of the Department of Teacher Education in Helsinki- At the microscopic level, the arrangement and function of the nerves and muscles that serve the eyelid allow for its quick action and retreat.
Significance of own currency for the Finnish national identity.