A: External sphincter (blue arrow) and internal sphincter (yellow arrow).
B: Dentate line with anal crypt (thick blue arrow), the anal gland (black arrow), opening of the anal gland (thin blue arrow).
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| Figure 1: Demonstrative image from Fry & Kodner (1985) CIBA, showing
sphincteric complex. A: External sphincter (blue arrow) and internal sphincter (yellow arrow). B: Dentate line with anal crypt (thick blue arrow), the anal gland (black arrow), opening of the anal gland (thin blue arrow). |