Lesson 3 by Hilde Hemmes | Oct 30, 2014 | 0 comments Lesson 3 – Gastro-Intestinal System Course Information Course Instructor Hilde Hemmes Author Members Only FREE MEMBER PRICING All Lessons Lessons 1-3 Lessons 1-6 Lesson 3 Course Lesson Lesson 3 – Gastro Intestinal System Before starting this course you must complete the required prerequisite course: Lesson 2