BRAIN+DISSECTION+PROCEDURE


 * OVERVIEW **
 * The carolina mammal brain dissection guide is a general set of instructions for dissecting mammal brains. With each type of brain, there will be differences in the size of the structures and brain regions, but the general structures and their relative location will be the same or very similar. **


 * SAFETY **
 * Follow safe laboratory practices when performing any dissection. Wear safety glasses or goggles, gloves, and lab aprons when dissecting. Perform dissections on a dissecting tray or pan to contain specimens and fluids. Be careful when using sharp instruments such as scalpels,forceps,teasing needles,and scissors. **
 * PROCEDURE **
 * 1. Review the glossary provided at the end of the dissection guide. **
 * 2. place brain on tray **
 * 3. observe the dura mater or outer meninges **
 * 4.identify the cerebrum **
 * 5.locate the four lobes of the cerebrum **
 * 6.locate the cerebellum **
 * 7.place the brain on the dissecting tray,ventral surface up **
 * 8.the cranial nerves and pituitary were cut when the brain was removed from the skull **
 * 9.place the brain on a dissecting tray,dorasl side up **
 * 10.each hemisphere contains a lateral ventricle, referred to as first and second ventricle. The lateral ventricles c an be located by removing the septum pellucidum. **
 * 11.locate the third and fourth ventricles.examine each ventricle and try to identify the choriod plexus,which produces cerebrospinal fluid. **
 * 12.with the cut side facing up,locate the following parts: thalamus,hypothalamus,pineal body,pons,and medulla **
 * 13.observe the cut surface of the cerebellum **
 * 14.locate the midbrain region,located between the thalamus and pons **
 * 15.make a cross section through a cerebral hemisphere just anterior to the thalamus **
 * 16.remove the cerebellum and remainder of the cerebral hemisphere by dissecting away everything dorsal to the floor of the lateral ventricle. **
 * 17.remove the hippocampus to locate the remainder of the thalamus **
 * 18.once you have observed all the structures of brain,dispose of the specimen in accordance with local guidelines and teacher's instructions **