Are specialized cells that generate and conduct electrical impulses throughout the body.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure