Lesson 6 by Hilde Hemmes | Jul 30, 2014 | 0 comments LESSON 6 Course Information Course Instructor Hilde Hemmes Author Members Only FREE MEMBER PRICING All Lessons Lessons 4-6 Lessons 1-6 Lesson 6 Course Lesson Lesson 6 – Cardiovascular and Lymphatic Systems Before starting this course you must complete the required prerequisite course: Lesson 5