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How do the annular grooves on a caecilianās skin affect its appearance?
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Gymnophiona
Caecilian moving over soil.
The annular grooves on a caecilianās skin significantly influence its appearance by encircling the body and dividing it into distinct segments. These primary grooves, known as annuli, give the animal a segmented, wormlike look. In certain taxonomic groups, secondary and tertiary grooves may also partially circumscribe the body, further defining its external structure. Within the tissue of these annuli, dermal scales are typically present, adding to the unique texture of their skin.12