Ruminant Digestive Systems: A Closer Look - DVD

Grades 9-12.

Through computer-generated graphics, models, skeletal parts, and digestive systems removed from slaughtered animals, an experienced scientist helps you understand the digestive systems of cattle, sheep, deer, and goats. The instructor begins with an overview of prehension, salivation, mastication, and ruminating. Then he briefly reviews anatomy: the rumen, reticulum, omasum, abomasum, and lower digestive tract. As he dissects a steer’s digestive tract, the instructor shows and explains organ structures, contents, tissue textures, functions, and capacities. Also shows a cannula placed in a live steer to examine stomach contents while the steer is digesting, a laparoscopic footage filmed from inside the digestive tract. You can test content mastery through periodic quizzes and a final quiz. 41 minutes. Copyright 2000.