12:53duration 12 minutes 53 seconds
Ch 22 III - Respiratory Zone
Ch 22 objectives 10-13.
16:07duration 16 minutes 7 seconds
Ch 22 II - Conducting Zone Pt 2
Ch. 22 objectives 5-9.
14:37duration 14 minutes 37 seconds
Blood II - Erythrocytes
Chapter 17 objectives 4-7.