Ward Melville High School Regulation (maintaining homeostasis) Regulation Ward Melville High School Regulation Regulation ● Involves the control and coordination of life activities to maintain _____________________ ● Multicellular organisms have 2 systems for this: – Nervous system: uses ______________impulses – Endocrine system: uses _____________ impulses Ward Melville High School Regulation Nervous System ● Sends electrical and chemical impulses Ward Melville High School Regulation Endocrine System ● Glands: specialize in the secretion of substances (_______________) into the bloodstream that are needed by an organism ● _______________ Mechanisms –Positive and negative Ward Melville High School Endocrine System ● The pancreas: two important hormones – ___________ and _________________ ● affect glucose metabolism Regulation Ward Melville High School Regulation Ward Melville High School Regulation Endocrine System Ward Melville High School Regulation Ward Melville High School Regulation