The image below is a schematic flow diagram of a typical oil refinery depicting various unit processes and the flow of intermediate products between the inlet crude oil feedstock and the final products.he image below is a schematic flow diagram of a typical oil refinery depicting various unit processes and the flow of intermediate products between the inlet crude oil feedstock and the final products.
In vertebrate anatomy, the pituitary gland, or hypophysis, is an endocrine gland about the size of a pea and weighing 0.5 grams (0.018 oz) in humans. It is a protrusion off the bottom of the hypothalamus at the base of the brain.
Pituitary Gland Anatomy - Pathophysiologic Variants. 1  Pituitary tumors are relatively common, accounting for about 15% of all primary brain tumors. 2  Pituitary adenomas are arbitrarily classified as microadenomas (< 1 cm) or macroadenomas (> 1 cm). 3  Secretory adenomas are typically monoclonal--that is, they secrete a single hormone.