Which structure is not considered to be part of the membranous labyrinth?
A. Scala vestibuli
B. Semicircular duct
C. Saccule
D. Cochlear duct
E. Utricle
A
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You conduct an experiment on twenty 18-year-old male subjects to see how various intensities of exercise influence heart rate. Which of the following is/are considered a dependent variable?
A) heart rate B) age of subjects C) sex of subjects D) intensity of exercise E) More than one of the answers is correct.
The purpose of having valves in the cardiovascular system is to
A) ensure that blood flows in one direction. B) prevent blood from flowing too quickly. C) regulate blood pressure. D) provide the force for circulation. E) provide sounds so that heart health can be monitored.
Regulation of blood glucose in the body is an example of homeostasis.
Indicate whether the statement is true or false
Circulation to the spleen demonstrates a(n)
A. simple pathway, as one artery delivers blood and one vein drains the organ. B. simple pathway, as its two capillary beds are separated by a portal vein. C. anastomosis, as one artery delivers blood and one vein drains the organ. D. anastomosis, as its two capillary beds are separated by a portal vein.