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APHY 102 Midterm Exam - Ivy Tech GRADED A 2023/2024 What is a hormone and how does it act? - CORRECT ANSWER 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. What is a paracrine gland? - CORRECT ANSWER a secretion that enters interstitial fluid but affects only neighboring cells What is an autocrine gland? - CORRECT ANSWER A secretion that only affects the secreting cell. What is an endocrine gland? - CORRECT ANSWER A gland that secretes a substance (a hormone) into the bloodstream and act on target cells What is an exocrine gland? - CORRECT ANSWER A ducted gland that produces a secretion onto a body surface. Where is the thymus located? - CORRECT ANSWER mediastinum; behind the sternum Where is the pineal gland located? - CORRECT ANSWER center of brain Where are the reproductive organs located? - CORRECT ANSWER abdomen; pelvic Where is the pituitary gland located? - CORRECT ANSWER sella turcica of the sphenoid bone; base of the brain Where are the adrenal glands located? - CORRECT ANSWER on top of each kidney Where is the pancreas located? - CORRECT ANSWER posterior to the stomac