Homeostasis depends on the activity of body systems to adjust a variable. Because our bodies work so well to maintain variables at set point, we often do not even notice the systems they use to do it. But in someone who is ill, these systems may not be able to maintain homeostasis; you need to be aware of this to head off possible problems. Which of the following can directly impact fluid balance?

Select all that apply.
a. Reproductive system
b. Respiratory system
c. hearing
d. urinary system
e. sweat glands
f. throat muscles
g. muscles