Periotic cartilage is a structure in the skull of some animals, including mammals and reptiles. The spelling of this word is pronounced as /pɛriˈɒtɪk ˈkɑːtɪlɪdʒ/. The first syllable of "periotic" is pronounced as "per-ee", while the second syllable is pronounced as "o-tik". Meanwhile, the second word "cartilage" is pronounced as "kar-ti-lij". When combined together, "periotic cartilage" refers to the cartilaginous structure that surrounds the ear's opening, which is a crucial part of hearing and balance in many vertebrates.
Periotic cartilage is a type of specialized connective tissue structure found in the skull of certain aquatic animals, particularly in the inner ear region. It is primarily composed of hyaline cartilage, which is a smooth and flexible type of cartilage rich in collagen fibers.
The periotic cartilage is specifically located in the region surrounding the auditory capsules, which house the vital sensory structures responsible for hearing and maintaining balance. It serves as a protective covering around these delicate structures, shielding them from external forces and potential damage. Additionally, the periotic cartilage provides structural support to maintain the shape and stability of the auditory capsule.
The inner ear is a crucial component of the auditory and vestibular systems, enabling animals to detect and process sounds, as well as maintain their balance and orientation in water. The periotic cartilage plays a vital role in facilitating these functions by providing a framework for the attachment of various muscles, ligaments, and nerves that are involved in auditory and vestibular processes.
Overall, periotic cartilage is an essential component of the inner ear structure in aquatic animals, contributing to the protection, stability, and functionality of the auditory capsules. Its specialized composition and location make it an integral part of the overall anatomy and physiology of these organisms, enabling them to perceive and navigate their aquatic environments effectively.
A cartilaginous mass on either side of the chondrocranium in the fetus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "periotic" comes from the Greek word "periousios", which means around or surrounding, and the Latin word "oticus", which means ear. "Cartilage" originates from the Latin word "cartilago", which refers to a kind of flexible connective tissue. So, the etymology of the term "periotic cartilage" indicates that it refers to the cartilage that surrounds or is associated with the ear.