“…In the term foetus the surface mucosa is hyperechoic, the mucosa, submucosa and muscle are hypoechoic and the serosa is hyperechoic (Gil, Garcia, Giannico, & Froes, 2015; Milani et al, 2020; Siena, Corrò, et al, 2022; Siena, di Nardo, et al, 2022; Siena, Romagnoli, et al, 2022). Peristalsis becomes easily visible and more and more consistent between 62 and 64 days (Siena, Corrò, et al, 2022; Siena, di Nardo, et al, 2022; Siena, Romagnoli, et al, 2022). There are four stages of intestinal development, starting at 39 days gestational age (Gil, Garcia, & Froes, 2015).…”