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.
Esophageal cancer occurs when cancer cells develop in the esophagus, a tube-like structure that runs from your throat to your stomach. Food goes from the mouth to the stomach through the esophagus. The cancer starts at the inner layer of the esophagus and can spread throughout the other layers of the esophagus and to other parts of the body (metastasis).