What two nervous systems balance each other to provide homeostasis?
o
a. parasympathetic and sympathetic
o
b. central and peripheral
o
c. central and sympathetic
d. somatic and parasympathetic

Parasympathetic and sympathetic -A.

 The correct answer is: [A]:

                →  " parasympathetic and sympathetic " .

The 2 (two) "nervous systems" that balance each other to provide "homeostasis" are:

   1)   the "parasympathetic" nervous system ;  and:

  2)  the "sympathetic"  nervous system.

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when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.