The Eustachian tube connects the throat and the middle ear (the site of a typical  ear infection ) and allows air to travel between them and equalize the pressures. When the Eustachian tube is temporarily pinched off, pressure can build up in the middle ear.
Visitation is a matter of state law, but generally speaking, every state allows parents to exercise a reasonable amount of visitation with their children, which generally means enough time to establish and maintain a meaningful relationship.
In funeral services, a viewing (sometimes referred to as Calling Hours, Reviewal, Funeral Visitation or a Wake in the United States and Canada) is the time that the family and friends come to see the deceased after they have been prepared by a funeral home.