APHY 102 Final Exam Ivy Tech | 205 Questions with 100% Correct Answers | Verified | Latest Update 2024 | 28 Pages

Who regulates pituitary gland secretion? - hypothalamus What is a hormone and how does it act? - Hormones are chemical messengers that are responsible for regulation. They are secreted into body fluids, mainly blood. It has specific actions on target tissues, which are any tissue that has specific receptors for that particular hormone. Compare and contrast glucagon and insulin. - Glucagon stimulates the liver to break down glycogen and convert noncarbohydrates into glucose and it stimulates the breakdown of fats. Insulin promotes the formation of glycogen from glucose, inhibits conversion of noncarbohydrates into glucose, and enhances movement of glucose through adipose and muscle cell membranes, decreasing blood glucose concentration and promotes transport of amino acids into cells, as well as enhances synthesis of proteins and fats. Both work to keep blood glucose concentration constant, but glucagon breaks down glycogen into glucose and insulin forms glycogen from glucose. How are pheromones different than hormones? - is a chemical signal sent between members of the same species. Are a type of hormone that are released in small quantities and play a big role in physical attraction between people. How is inhibin used in the body? - Inhibits the anterior pituitary gland by negative feedback. This action prevents over secretion of FSH. It is secreted by cells of the testes and ovaries. FSH is secreted by anterior pituitary gland. It is a glycoprotein hormone. Differentiate between paracrine, autocrine, endocrine, and exocrine glands