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.

One major pathway involving this compound is the tuberoinfundibular one that transfers it from the hypothalamus to the pituitary gland. This compound is involved in voluntary motor control via its nigriostriatal pathway, and it binds with lactotrophs in order to inhibit the secretion of prolactin, which is a major antagonist of it. It is the immediate precursor of norepinephrine in the epinephrine synthesis pathway. Antagonists of this neurotransmitter are used to treat schizophrenia, and deficiency of this neurotransmitter can lead to Parkinsons disease. For 10 points, name this neurotransmitter associated with the brain's pleasure center whose precursor is L-dopa.
Science

His poems include an admonishment to a Spaniard for brushing his teeth with piss, a warning to a napkin-thief, a tirade against an over-priced prostitute, and a vicious warning to two former friends that he will orally and anally rape them. He also wrote a masturbation joke addressed to Cato the Younger and implied that Caesar was a homosexual. His more traditional works include an ode on his brother's tomb, containing the words, "frater, ave atque vale. " However, he is best known for his love poems which include a defense of his lover against Quintia and a poem about her sparrow. FTP identify this Roman poet who loved Lesbia.
Literature

It became popular due to an engraving by Nicholas de Launay. This work was originally commissioned from Gabriel-Francois Doyen, who suggested the addition of cupids but ended up refusing to paint it. The original was to have included a bishop, but that was changed to a generic old man in the final version. In the lower center, a statue depicts dolphins driven by cupids who pull the water-chariot of Venus. On the left, a young man lies luxuriously on a bush with his hat extended, staring upward at the erotic central scene. That central scene depicts the "happy dangers" of a certain object which contains the mistress of the Baron de Saint-Julien. A pink shoe flies through the sky toward a cupid as a woman reaches her apex in, FTP, what Rococo masterpiece by Jean-Honore Fragonard
Fine Arts