functions of blood {Ans: distribution and transportation, regulating levels ex-glucose, protection ex- clotting}Chapter 18 {Ans: }Factors that decrease insulin secretion: {Ans: Hypoglycemia, sympathetic stimulation, somatostatin, during periods of fasting.}the pH of blood should be between {Ans: 7.35-7.45}Which system does the endocrine system work with? {Ans: Nervous system}Epinephrine and norepinephrine {Ans: * Fight-or-flight responses, wakefulness, alertness * Increase heart rate and force of contraction; cause blood vessels to constrict in skin, kidneys, gastrointestinal tract, and other viscera.}