BIOL 212 Lecture 22: Unit 4 Endocrine System
Document Summary
Has duct (tube) that connects to epithelial surface. Secreted into extracellular space, diffuses into vessels. Hormones carried to distant target cells within blood. Neuro-endocrine regulatory gland: hypothalamus: long-term effects, generally targets organs, hormones released into circulation, slow response, slow recovery. Releases regulatory hormones that stimulate a. pituitary to release hormones. Controls autonomic ns that stimulates the endocrine glands. Made from an out-pocket of your brain (contains nervous tissue) Made from cells from the posterior abdominal wall of body. Made from sympathetic nervous tissue from crest of sympathetic ganglia. Sympathetic nervous system transmitter that acts as a hormone. Pituitary gland: posterior pituitary, antidiuretic hormone (adh) Stimulates blood vessel walls to constrict: results in an increase in blood pressure, oxytocin. Females uterine contractions during birth & milk letdown: males contractions of ductus deferens & prostate for release of secretions, anterior pituitary, thyroid stimulating hormone (tsh) Stimulates thyroid gland to release thyroxine when levels are low: growth hormone.
