Sherwood is a city in Washington County, Oregon, United States. Located in the southeast corner of the county, it is a residential community in the Tualatin Valley southwest of Portland. As of the 2010 census, Sherwood had a population of 18,194 residents. The city's population for 2014 was estimated to be 18,978 by the U.S. Census.
arthrology definition: Noun (uncountable) 1. (anatomy) The branch of anatomy dealing with the joints...
An arthropod (from Greek arthro- , joint + podos, foot) is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and jointed appendages. Arthropods form the phylum Arthropoda, and include the insects, arachnids, myriapods, and crustaceans.he arthropod body plan consists of segments, each with a pair of appendages. The rigid cuticle inhibits growth, so arthropods replace it periodically by moulting. Their versatility has enabled them to become the most species-rich members of all ecological guilds in most environments.