This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
Oblique cord is the modification of 
Select and explain. 
A. Flexor pollicis Longus, B. Flexor Pollicis Brevis, C. Supinator, D. Pronator Teres
A: Flexor pollicis Longus
Answer: A: Flexor pollicis Longus 
Explanation: After bih, the proximal pas of the flexor digitorum profundus and flexor pollicis Longus FPL muscles were likely replaced by collagenous tissues, providing a specific type of intermuscular septum i.e., the oblique cord. Reference: Vishram Singh Anatomy; 2nd edition; Page no: 134