Ossicles deep): the malleus, incus, and stapes, terms that in Latin are translated as "the hammer, anvil, and stirrup". Studies have shown that ear bones in mammal embryos are attached to the dentary, which is part of the jaw. These are ossified portions of cartilage—called Meckel's cartilage—that are attached to the jaw. As the embryo develops, the cartilage hardens to form bone. Later in development, the bone structure breaks loose from the jaw and migrates to the inner ear area. The structure is known as the middle ear, and is made up of the stapes, incus, malleus, and tympanic membrane. These
The Anvil or the Hammer watched by 4.58 million viewers, with a 1.5 rating among 18-49 adults. With Live+7 DVR viewing factored in, the episode had an overall rating of 7.23 million viewers, and a 2.6 in the 18–49 demographic. "The Anvil or the Hammer" received mixed-to-positive reviews. The episode received a rating of 60% with an average score of 6.7 out of 10 on the review aggregator Rotten Tomatoes, with the site's consensus stating: "Though the plot twist was surprising, 'The Anvil or the Hammer' disregarded "Gotham"s own history, muddying up the narrative with a nonsensical story." Matt Fowler of IGN gave the episode