Question

Acetabulum is present in

• A. pelvic girdle of rabbit
• B. pectoral girdle of rabbit
• C. both $1$ and $2$
• D. none of these

Answer 1

Answer: (A)

pelvic girdle of rabbit

Answer 2

Pelvic girdle of rabbit is composed of two halves, united mid-ventrally at pubic symphysis. Anteriorly they are intimately connected to sacrum. Each half of pelvic griddle, or os innominatum, comprises of the usual three bones-ilijwri, ischium and pubis-which are fused together into a single innominate or hip bone. On outer middle side of innominate bone lies a deep cuplike cavity or acetabulum, which articulates with the head of femur. Ilium and ischium participate in the formation of acetabulum but a small cotyloid bone prevents pubis from reaching up to acetabulum.