In frog the vertebra, with an anterior convex surface, is :

Question

In frog the vertebra, with an anterior convex surface, is : (A) atlas (B) urostyle (C) 8th vertebra (D) 9th vertebra

Tardigrade Admin · Accepted Answer

The centrum of 9th vertebra (= sacral vertebra) of frog is a coelous (convex at both ends)-the anterior convexity is single and large for articulation with the posterior concavity of the centrum of 8th vertebra.

Q. In frog the vertebra, with an anterior convex surface, is :

atlas

urostyle

8th vertebra

9th vertebra

The centrum of $9 t h$ vertebra (= sacral vertebra) of frog is a coelous (convex at both ends)-the anterior convexity is single and large for articulation with the posterior concavity of the centrum of $8 t h$ vertebra.