Hyoid Bone Syndrome. The hyoid system suspends the jaw from the braincase of the skull permitting great mobility of the jaws. While there is no fossil evidence directly to support this theory it makes sense in light of the numbers of pharyngeal arches that are visible in extant jawed vertebrates the Gnathostomes which have seven arches and primitive jawless vertebrates the Agnatha which have nine.
The hyoid system suspends the jaw from the braincase of the skull permitting great mobility of the jaws. While there is no fossil evidence directly to support this theory it makes sense in light of the numbers of pharyngeal arches that are visible in extant jawed vertebrates the Gnathostomes which have seven arches and primitive jawless vertebrates the Agnatha which have nine. Sternocleidomastoid syndrome is a condition in which trigger points form in the SCM leading to muscular pain and other symptoms.
Sternocleidomastoid syndrome is a condition in which trigger points form in the SCM leading to muscular pain and other symptoms.
Sternocleidomastoid syndrome is a condition in which trigger points form in the SCM leading to muscular pain and other symptoms. Sternocleidomastoid syndrome is a condition in which trigger points form in the SCM leading to muscular pain and other symptoms. The hyoid system suspends the jaw from the braincase of the skull permitting great mobility of the jaws. While there is no fossil evidence directly to support this theory it makes sense in light of the numbers of pharyngeal arches that are visible in extant jawed vertebrates the Gnathostomes which have seven arches and primitive jawless vertebrates the Agnatha which have nine.