This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
The pa of the Lens which undergoes a change in shape during accommodation is? 
Select and explain. 
A. Anterior central pa, B. Posterior central pa, C. Anterior peripheral pa, D. Posterior peripheral pa
C: Anterior peripheral pa
Answer: C: Anterior peripheral pa 
Explanation: Mechanism of AccommodationEye at rest Ciliary ring is large and keeps the zonules tense Contraction of ciliary muscle Ciliary ring shoened and releases zonular tension on lens capsule - allows the elastic capsule to act unrestrained to deform the lens substance - lens (anterior peripheral pa ) alters its shape to become more convex or conoidal (Refer: AH Khurana, Comprehensive Textbook of Ophthalmology,5thedition, pg no: 41)