After birth, . . . .. A . . . . Gets blocked by the deposition of . . . . . . B. . . . Fibres
Channel: Doubtnut
Date: 2020-05-03

After birth, . . . .. A . . . . Gets blocked by the deposition of . . . . . . B. . . . Fibres forming ligramentum arteriosum. Identify A and B.