颞骨位于头颅两侧，形状不规则，分为鳞部、鼓部和岩部（锥体）。出生时，颞骨为３块，１岁时合为一骨。外耳道骨性部、中耳和内耳就挤这一狭窄的空间里，因而颞骨内的结构较精细复杂。在胚胎时期，第一咽囊发育形成鼓室和咽鼓管，第一鳃沟与第一咽囊之间的第一鳃膜发育形... Temporal bone located on both sides of the skull, irregular shape, divided into scales, drums and rock (cone). At birth, the temporal bone is 3 pieces, one bone at 1 year old. The external auditory meatus, the middle ear and the inner ear squeeze this narrow space, so the structure of the temporal bone more sophisticated. During the embryonic period, the first pharyngeal pouch develops and develops the tympanic and eustachian tube, the first gill gut and the first gill sac between the first gill ...