LAB 2 EXAM REVIEW: CHAPTERS 23 & 24 Chapter 23 - Respiratory System Slides I recommend that you label in pencil for any structures that are unclear. Also as discussed in class, inserting the slides into page protectors and using dry eraser marker for labeling practice will assist in the learning process. You can print multiple slides per page as long as they are legible. Bring the packet to class for discussion. Chapter 24 - Digestive System Slides I recommend that you label in pencil for any structures that are unclear. Also as discussed in class, inserting the slides into page protectors and using dry eraser marker for labeling practice will assist in the learning process. You can print multiple slides per page as long as they are legible. Bring the packet to class for discussion.