Product overview Sectional model of the rectum Shows physiological structures Shows haemorrhoids in stages I through IV With stand mounted on base Dimensions incl. base: 18 x 12 x 12 cm Haemorrhoid Model This haemorrhoid model from HeineScientific shows a lengthwise section of the human rectum with its physiological structures such as the sphincter and Kohlrausch fold. Furthermore, the haemorrhoids are shown in various stages. Product Details Haemorrhoid model Lengthwise model of the rectum Consists of a removable 3-D model and a relief model, firmly attached to the base Shows the physiological structure of the rectum as well as various stages of haemorrhoids Meticulously painted With stand mounted on base Dimensions incl. base: 18 x 12 x 12 cm (H x W x D) Visible Structures on the Haemorrhoid Model: Inner sphincter Outer sphincter Intestinal mucosa Crypts Kohlrausch fold M. puborectalis Venous plexus Stage I haemorrhoids Stage II haemorrhoids Exterior haemorrhoids Haemorrhoids in stages III and IV are displayed on the relief model.