Question

what do arrows a, b and c point to? anterior view of a large wedge - shaped bone at the inferior end of the spine with arrow a pointing to the superior surface, arrow b pointing to an opening/hole on it and arrow c pointing to another small, fused bone that articulates with the bone above it. a)ala, b)ventral sacral foramina, c)coccyx a)ala b) dorsal sacral foramina, c)coccyx a) promontory, b) ventral sacral foramina) coccyx a) auricular surface,b) ventral sacral foramina, c) coccyx a)ala, b)ventral sacral foramina, c)dorsal sacral foramina

Explanation:

The superior surface of the sacrum has alae. The holes on the sacrum are the ventral sacral foramina. The small, fused bone at the inferior - most part articulating with the sacrum is the coccyx.

Answer:

ala, b)ventral sacral foramina, c)coccyx