ASU BIO 202: Exam #1 questions

hormones - What are the chemical messengers secreted into the blood stream that act on cells far away? neurotransmitters - What are released by nerves to affect cells? endocrine - What type of glands secrete chemicals (hormones) into the blood? target organ cells - What are the cells that are acted on by hormones called? hormones - What mechanism perform general functions of communication and control but a slower, longer-lasting type of control than that provided by nerve impulses? nonsteroid hormones (first messengers) - What mechanism binds to receptors on the target cell membrane, triggering second messengers to affect the cell's activities? steroid hormones - What mechanism binds to receptors within the target cell nucleus and influence cell activity by acting on DNA? hormone secretion - What, in the regulation of hormone secretion is controlled by homeostatic feedback? negative feedback - What, in the regulation of hormone secretion, are mechanisms that reverse the direction of a change in a physiological system? positive feedback (uncommon) - What, in the regulation of hormone secretion, are mechanisms that amplify physiological changes? hypersecretion - What is secretion of an excess of hormone that is a mechanism of endocrine disease? hyposecretion - What is insufficient hormone secretion that is a mechanism of endocrine disease?