Determine which two organ systems are working together in the following scenario: You are watching a scary movie, and you notice that your heart rate is increasing and the hairs on your arms are standing on end. Your flight sense has been switched on. Which two organ systems are working together to create this cascade of responses? (choose 2) Nervous Endocrine Excretory Integumentary Muscular Circulatory

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).