The spiny lizards are medium to large lizards up to 10 inches long. They have keeled, pointed scales that are usually a subdued gray or tan, a wide purple stripe down the back and scattered turquoise scales mixed with tan and brown on the back and sides.he lizards grow out of their skins and usually shed in patches rather than in one piece like a snake. The spiny lizards eat insects, other lizards, and some plant material such as leaves, berries, and flowers. They are preyed upon by snakes, coyotes, and birds of prey.
Cells of nervous tissue. Nervous tissue is the main component of the two parts of the nervous system; the brain and spinal cord of the central nervous system (CNS), and the branching peripheral nerves of the peripheral nervous system (PNS), which regulates and controls bodily functions and activity.ells of nervous tissue. Nervous tissue is the main component of the two parts of the nervous system; the brain and spinal cord of the central nervous system (CNS), and the branching peripheral nerves of the peripheral nervous system (PNS), which regulates and controls bodily functions and activity.
Medical Definition of NEMATODA. : a phylum related to the Aschelminthes and comprising elongated cylindrical worms without an epithelial coelomic lining, with dorsal and ventral nerve cords, and with lateral excretory ducts that are parasites of humans, animals, or plants or free-living dwellers in soil or water and are known as roundworms, ....edical Definition of NEMATODA. : a phylum related to the Aschelminthes and comprising elongated cylindrical worms without an epithelial coelomic lining, with dorsal and ventral nerve cords, and with lateral excretory ducts that are parasites of humans, animals, or plants or free-living dwellers in soil or water and are known as roundworms, ....