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
The fascia around the nerve bundle of brachial plexus is derived from 
Select and explain. 
A. Preveebral fascia, B. Deep cervical fascia, C. Clavipectoral fascia, D. Pectoral fascia
A: Preveebral fascia
Answer: A: Preveebral fascia 
Explanation: The fascia around the brachial plexus is called axillary sheath and is a derivative of preveebral fascia Axillary sheath covers brachial plexus and axillary vessels Axillary sheath localises the anesthetic solution to the nerve plexus. Ref : Gray's Anatomy The Anatomical Basics of Clinical Practice 41 e pg 777