-itis means “inflammation”.The inflammation of the peritoneum as result of bacterial infection is called( )Appendicitis is the( )

A pseudocoelom lacks( ). A: peritoneum and mesenteries B: muscles C: a digestive tract D: excretory organs E: reproductive organs

The heart is enclosed in a double-walled membranous sac called___. <br/>() A: the myometrium B: the peritoneum C: the epicardium D: the periosteum E: the pericardium