I'he pos The lateral surfaces after middle life are joined to the greater cornua. In early life they are connected to the cornua by cartilaginous surfaces, and held together by liga¬
ments, and occasionally a synovial membrane is found between them.
The Greater Cornua (thyro-hyal) project backward from the lateral surfaces of the body; they are flattened from above downward, diminish in size from before, backward, and terminate posteriorly in a tubercle for the attachment of the lateral thyro-hyoid ligament. The outer surface gives attachment to the Hyo-glossus, their upper border to the Middle constrictor of the pharynx, their lower border to
part of the Thyro-hyoid muscle.
The Lesser Cornua (cerato-ltyals) are two small, conical-shaped eminences attached by their bases to the angles of junction between the body and greater cornua, and giving attachment by their apices to the stylo-hyoid ligaments.' The smaller cornua are connected to the body of the bone by a distinct diar¬throdial joint, which usually persists throughout life, but occasionally becomes
ankylosed.
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