Human Brain Frontal Horizontal First Trimester Instructions Click the specimen thumbnail image to display an overview video of the specimen. Click the specimen number/name to view all the specimen images. 01-m714 02-c6144 03-c836 04-m2321 05-m2300 06-c5892 07-c8314 08-m2065 09-c6517 10-m1000 11-m2161 12-c6520 13-m2051 14-m2095 15-m2305 16-c492 17-m2155 18-c8965 19-m2246 20-m2304 21-c8553 22-c966 23-m2314 24-c840 25-m2042 26-c9226 27-c609 28-m841 29-c886 30-c1500 31-y1-59