Chapter 7, Problem 3RQ

What factors must be homeostatically maintained, and which body systems contribute to maintaining each of these factors?

What kind of muscle tissue is found surrounding the urinary bladder? a. cardiac b. skeletal c. striated d. smooth

Read this article (http://openstaxcollege.org/l/strokespell) to learn about a teenager who experiences a series of spells that suggest a stroke. He undergoes endless tests and seeks input from multiple doctors. In the end, one expert, one question, and a simple blood pressure cuff answers the question. Why would the heart have to beat faster when the teenager changes his body position from lying down to sitting, and then to standing?