APHY 102 Final Questions With Complete Solutions

Who regulates pituitary gland secretion? correct answer: the hypothalamus sends "messages" to the pituitary gland to release hormones What is a hormone and how does it act correct answer: a regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action. a synthetic substance with an effect similar to that of an animal or plant hormone. a person's sex hormones as held to influence behavior or mood. Hormones are made by endocrine glands, such as the thyroid, pancreas, and ovaries. But how do they work in our bodies? Why are they important? Read more about different hormones, the glands that produce them, and the work that they do. Compare and contrast glucagon and insulin. correct answer: Glucagon is a peptide hormone, produced by alpha cells of the pancreas, that raises the concentration of glucose in the bloodstream. Its effect is opposite that of insulin, which lowers the glucose concentration a hormone produced in the pancreas by the islets of Langerhans that regulates the amount of glucose in the blood. The lack of insulin causes a form of diabetes How are pheromones different than hormones? correct answer: Pheromones are a type of hormone that are mainly