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The ossicles (also called auditory ossicles) are three bones in either middle ear that are among the smallest bones in the human body. They serve to transmit sound vibrations sent from the ear drum to the fluid-filled labyrinth ( cochlea ).
5 lip 2023 · The ossicles are situated in the middle ear and suspended by ligaments. They articulate with each other through synovial joints to form a chain across the length of the middle ear from the tympanic membrane (laterally) to the vestibular window (medially).
9 lis 2023 · Accessory ossicles of the feet are common developmental variants with almost 40 having been described. Some of the more common include 1-4: os peroneum; os subfibulare; os subtibiale; os tibiale externum (accessory navicular) os trigonum; os calcaneus secundaris; os calcanei accessorium 6; os intermetatarseum
30 lip 2024 · There are three tiny articulating bones in the middle ear known as ossicles (from lateral to medial): malleus; incus; stapes; Their role is to mechanically amplify the vibrations of the tympanic membrane and transmit them to the cochlea where they can be interpreted as sound.
The auditory ossicles are the three smallest bones in the human body, the malleus, the incus and the stapes. The first is attached to the tympanic membrane, the last to the circumference of the fenestra vestibuli, the incus being placed between and connected to both by delicate articulations.
Over 20 accessory ossicles have been described. These usually occur because of failure of fusion of ossification centers. Such is the case of the os centrale, an additional bone located on the dorsal aspect between the scaphoid, capitate, and trapezoid, or between the lunate, triquetrum, and hamate.
The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. In the human skeleton, it consists of 80 bones and is composed of six parts; the skull (22 bones), also the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.
