This document provides instructions for a sea star dissection lab where students are tasked with labeling the external and internal structures of a sea star using letter identifiers on diagrams. The external structures include the aboral and oral sides as well as full anatomy diagrams. Internal structures cover the digestive system, reproductive system, and water vascular system.

1. Sea Star Dissection Lab
Write the names of the structures by the
correct letters on your paper.

2. Figure 1. External Anatomy of a Sea Star, Aboral Side
A
B

3. Figure 2. External Anatomy of a Sea Star, Oral Side
C
D

4. Figure 3. External Anatomy of a Sea Star
E
F

5. Figure 4. Internal Anatomy of a Sea Star – Digestive System
G H
I

6. Figure 5. Internal Anatomy of a Sea Star – Reproductive System
J

7. Figure 6. Internal Anatomy of a Sea Star – Water Vascular System
K
M
L
N