Which of the following is the root word meaning "heart"?

Approximately 15 trucks and cars have been involved in a "chain-reaction" collision. You are the first ambulance on the scene and begin going from vehicle to vehicle to determine the type and severity of each injury. This would be an example of what kind of triage?

A) Primary B) Secondary C) Emergency D) Tertiary

The layer of the alimentary canal just inferior to the mucosa that contains loose connective tissue, blood vessels, glands, and nerves is the ________.

Fill in the blank(s) with the appropriate word(s).