Scorpions in Arizona About 40-60 species occur in Arizona, although many are undescribed. The bark scorpion (Centruroides sculpturatus) is the only species in Arizona of medical importance.In the U.S. the bark scorpion is found in southeastern California, Arizona, Nevada, southern Utah, and southwestern New Mexico.
Epithelium (epi- + thele + -ium) is one of the four basic types of animal tissue. The other three types are connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of blood vessels and organs throughout the body.There are three principal shapes of epithelial cells: squamous, columnar, and cuboidal.he other three types are connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of blood vessels and organs throughout the body. There are three principal shapes of epithelial cells: squamous, columnar, and cuboidal.
1 The esophagus connects to the stomach at a small region called the cardia. 2  The cardia is a narrow, tube-like region that opens up into the wider regions of the stomach. 3  Within the cardia is the lower esophageal sphincter, a band of muscle tissue that contracts to hold food and acid inside of the stomach. Stomach mucus is also rich in bicarbonate ions, which neutralize the pH of stomach acid. 2  Parietal cells found in the gastric pits of the stomach produce 2 important secretions: intrinsic factor and hydrochloric acid.