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.
They are further classified into loose connective tissues, dense connective tissues, cartilage tissues and other connective tissues, such as bone tissues, blood, and lymphatics. Cartilage is a type of connective tissue whose extracellular matrix contains large amounts of mucopolysaccharide, particularly chondroitin sulphate. The cellular component of cartilage tissues is the chondrocytes. The chondrocytes are chondroblasts that became trapped in the extracellular matrix. The chondrocytes are responsible for the diffusion of nutrients and substances, and the repair of the matrix.