BIO 202 Arizona State University -BIO 202 Exam 1 fully solved graded A+

BIO 202 Arizona State University -BIO 202 Exam 1 fully solved graded A+ Discuss the way in which hormones promote body homeostasis. - correct answer Get stimulated when homeostasis is thrown off Compare and contrast the endocrine system and the nervous system. Make sure you understand the differences between a neurotransmitter and a hormone, addressing the importance of receptor specificity. - correct answer Endocrine - Uses hormones released by endocrine glands Effects many effector organs (i.e. HGH to all muscles) Is slower and longer lasting Nervous - Uses electricity and chemicals to send a fast message Has a specific effector organ (i.e. certain muscle) Uses neurotransmitters released by neurons Define negative feedback and describe its role in regulating blood levels of the various hormones. Use an example if you like! ☺ - correct answer Response to changed body condition if body is high or low from normal level signal tells body to make changes that will bring body back to normal level once body is back to normal level, signal is turned off List AND describe the four types of intercellular communication pathways that enable the body to maintain homeostasis. - correct answer - Direct communication -- Exchange of ions and molecules between adjacent cells across gap junctions -- Occurs between two cells of same type -- Where have we seen these before?