Question
Biology Question on Parts of the digestive system
Sigmoid notch is formed by:
A
cavity formed by humerus
B
cavity formed by radius- ulna
C
cavity formed by tibia-fibula
D
cavity formed by femur
Answer
cavity formed by radius- ulna
Explanation
Solution
Radius and ulna are the bones of the forearm which are closely held together. The ulna is the long bone and bears a deep sigmoid notch to articulation with the trochlea of the humerus.