Middle ear peak sensitivity to frequencies between 1 kHz and 3 kHz. The movement of the ossicles may be stiffened by two muscles. The stapedius muscle, the smallest skeletal muscle in the body, connects to the stapes and is controlled by the facial nerve; the tensor tympani muscle connects to the base of the malleus and is under the control of the medial pterygoid nerve which is a branch of the mandibular nerve of the trigeminal nerve. These muscles contract in response to loud sounds, thereby reducing the transmission of sound to the inner ear. This is called the acoustic reflex. Of
101 Things Removed from the Human Body from their body survived. This program also aired in the USA on the Discovery network's "The Learning Channel" in October 2007. The program contains stories, including a man having a uterus and a man with a teratoma, a type of large tumor. The large jaw tumor segment featured the work Mercy Ships, who have operated floating hospital ships in impoverished areas around the world. 101 Things Removed from the Human Body 101 Things Removed from the Human Body and 101 More Things Removed from the Human Body is a British "shockumentary" series directed by Eric Schotz, which is narrated by