WAEC - Biology (2021 - No. 11)
Radius and ulna are bones of the?
pectoral girdle
upper arm
pelvic girdle
lower arm
คำอธิบาย
Our forearm contains two long, parallel bones: the ulna and the radius. The ulna is the longer and larger of the two bones, residing on the medial (pinky finger) side of the forearm.