ZOO 3000 Study Guide - Final Guide: Acidophile, Proopiomelanocortin, Preganglionic Nerve Fibers
Document Summary
Involves a broad number of glands and tissues that secrete hormones that communicate information between cells and organs. Includes the thyroid gland, parathyroid gland, adrenal gland, pituitary gland, and pineal gland. Chemical and physical properties of hormones: hormones fall under four structural/chemical categories, peptides, processed from proteins. Interrenal and chromaffin cells in head kidney: no parathyroid gland, ultimobronchial body and corpuscles of stannius, scattered throughout body, unique endocrine gland, the urophysis, specialized organ at the end of the spinal cord for osmoregulation. Trichrome: composed of pale cells arranged in short cords, often the cells form follicles around drops of colloid, pars tuberalis, a narrow strip of epithelial tissue that wraps around the infandibular stalk to form a tube. Infandibular stalk: extends up from the pars nervosa, stalk of nervous tissue. Involved in producing glucose, among other things: cortisol mobilizes fuels under stress, zona reticularis.
