This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Nucleus pulposus is a remnant of 
Select and explain. 
A. Notochord, B. Interveebral disc, C. Spinal cord, D. Spinous process
A: Notochord
Answer: A: Notochord 
Explanation: Inderbir Singh&;sHuman embryologyTenth edition Pg 60 As the embryo enlarges the notochord elongates considerably and lies in the midline in the position to be later occupied by veebral columnHowever, notochord does not give rise to veebral columnMost of it disappears but pas of it persist in the region of each interveebral disc as nucleus pulposus