function
On one occasion he lost control of his bodily functions.
The hypothalamus regulates virtually every bodily function from respiratory rate to blood pressure to temperature control.
Eating a certain amount of fat is essential to bodily functions.

SMART Vocabulary: related words and phrases

Animal physiology: urine & urinating
accident
bathroom
cock a leg
excrete
excretion
genitourinary
go to the bathroomidiom
leak
pass
pass wateridiom
piddle
short
slash
tinkle
uric
water
waterworks
wazz
wee
wet your pantsidiom

You can also find related words, phrases, and synonyms in the topics:

Animal physiology: excrement & its excretion