Abdominal cavity. Abdominal cavity, largest hollow space of the body. Its upper boundary is the diaphragm, a sheet of muscle and connective tissue that separates it from the chest cavity; its lower boundary is the upper plane of the pelvic cavity. Vertically it is enclosed by the vertebral column and the abdominal and other muscles.
Things to Eat Before Bed. Snacking before bed can help you sleep more soundly. Despite what you may have heard, eating before bed is not a diet no-no. In fact, eating a snack before hitting the sheets may help you sail more smoothly through snooze-land.
Like cereal and milk, peanut butter and toast is the perfect combination of protein and carbohydrates that are present in foods that make you sleepy. Nuts are a great source of protein and these nuts are also a good source of magnesium, which helps you fall asleep and helps your muscles relax.