Where is the hollow of the foot?--"In the middle of the sole of the foot."

Where is the sole of the foot?--"On the bottom of the foot."

Where is the instep?--"Between the ankle joint and the toes."

Where is the lower leg?--"Between the knee joint and the ankle joint."

Where is the thigh?--"Between the hip joint and the knee joint."

Where is the upper arm?--"Between the shoulder joint and the elbow joint."

Where is the fore-arm?--"Between the elbow joint and the wrist joint."

Where are the toe joints?--"Between the parts of the toes."

Where are the finger joints?--"Between the parts of the fingers."

Where is the ankle joint?--"Between the lower leg and the foot."

Where is the knee joint?--"Between the thigh and the lower leg."

Where is the hip joint?--"Between the trunk and the thigh."

Where is the wrist joint?--"Between the fore-arm and the hand."

Where is the elbow joint?--"Between the upper arm and the fore-arm."

Where is the shoulder joint?--"Between the trunk and the upper arm."