Photo Gallery: Digestive System Cone-shaped tongue papillae, seen here in a colored scanning electron micrograph, contain nerve endings that receive and transmit touch sensations to the brain.

• 意译：人体消化系统图片。园锥形的舌乳头状突起，在这里看到一幅彩色扫描电子显微照片，含有神经末梢的接收和传送触摸的感觉给大脑。