1. Rat dissection by Zach clover

2. (CNS)Central Nervous System The brain and the spinal chord make up the CNS. The brain is what transmits the messages, and the spinal chord is like a highway for messages to brain.

3. Reproductive system Female ratFemale (human) This system in both species is meant to receive sperm and be fertilized by egg that female creates. Ovaries produce egg, egg travels down fallopian tubes, into uterus, then from there is sent down the cervix where it waits and then is bleed out the vagina.