POP QUIZ ANSWER

b. and c. The hippocampus, which helps process memory, is located at the base of your brain. The name is derived from the Greek for “horse” and “sea monster” because the organ resembles a seahorse. In your lower back, just above the pelvis, is a collection of nerve roots called the cauda equina (Latin for “horse’s tail”) that serve your legs, feet and pelvic organs.