Question
Biology Question on organisms and populations
Sigmoid notch is formed by
A
cavity formed by humerus
B
cavity formed by radio-ulna
C
cavity formed by tibio-fibula
D
cavity formed by femur
Answer
cavity formed by radio-ulna
Explanation
Solution
In rabbit, at the elbow joints, ulna projects beyond the radius as an olecranon process, which has a deep subterminal sigmoid notch for articulation with the distal end of humerus.