TASK DEFINITION: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
PROBLEM: In studying this structure, Elizabeth Gould showed that dendrite spine density and estradiol levels peaked together. A circuit of structures interconnecting this structure and the cortex was proposed by James Papez, and axon collaterals named for Schaffer innervates neurons in the CA1 portion of this structure. Neurons that respond only when an animal is in a certain region of space, known as place cells, are located in this structure. It consists of two sheets of neurons called Ammon's horn and the dentate gyrus, the first of which sends axons into the fornix. Connected ventrally and laterally to the olfactory cortex, this structure inhibits CRH release. For 10 points, name folded structure of the limbic system that plays a major role in learning and memory.

SOLUTION: Science

PROBLEM: A weight of the nth power of this parameter is imputed to contributions to elements of an S matrix by nth-order Feynman diagrams; thus, this number can be considered the order of expansion in perturbative quantum electrodynamics. This constant is a measure of the electron anomalous magnetic moment, which explains its role in the relativistic splitting of atomic spectral lines that is its namesake. The coupling constant for the electromagnetic interactions of electrons, it is equal to the square of the ratio of the electron and Planck charges, or, in cgs units, the electron charge squared divided by the speed of light times Diracs constant. For ten points, name this physical constant usually denoted alpha and equal to about one over one hundred thirty-seven.

SOLUTION: Science

PROBLEM: The title character of one opera by this composer marries Ernesto's lover, Norina, in a plot engineered by Dr. Malatesta. One character created by this composer recounts a meeting with a ghost to Alisa in the aria "Regnava nel silenzio." This man wrote an opera in which Adina cancels her marriage to Belcore to marry Nemorino, purchases the titular potion, and sings the aria "Una furtiva lagrima." The title character of another of his operas, the sister of Enrico Ashton, sings the aria "Il dolce suono" before stabbing her husband Arturo because she is in love with Edgardo Ravenswood. For 10 points, name this Italian composer of The Elixir of Love and Lucia di Lammermoor.

SOLUTION:
Fine Arts