Hours per Day. You can generally expect to spend, at minimum, as much time studying as you spend in class. But most students will spend even more time studying. The University of Michigan-Flint recommends that students spend two to three hours studying for every course hour in which they are enrolled. So if you are taking 15 hours of courses per week, you can expect to spend 30 to 45 hours per week studying, or about six to nine hours each weekday. Your reading speed is a major factor in predicting how long you'll spend studying each day.
The esophagus is the tube that carries food, liquids and saliva from your mouth to the stomach. You may not be aware of your esophagus until you swallow something too large, too hot or too cold. You may also become aware of it when something is wrong.
Science Videos. Science Main Index. The esophagus is a tube connecting from the throat to the stomach. It is sometimes called the gullet. Muscles of the esophagus contract in rhythmic waves, called peristalsis, that push the food along the esophagus downward into the stomach.Read on to learn more about the esophagus, and its role in digestion.cience Videos. Science Main Index. The esophagus is a tube connecting from the throat to the stomach. It is sometimes called the gullet. Muscles of the esophagus contract in rhythmic waves, called peristalsis, that push the food along the esophagus downward into the stomach.