The simple columnar and stratified columnar epithelia lining the lower pa of the anal canal is derived from: (A) Mesoderm, (B) Endoderm, (C) Ectoderm, (D) Neuroectoderm
Answer is C. The anal canal is formed from two components--the hindgut and proctodeum. The epithelium lining the lower anal canal is derived from ectoderm lining the proctodeum. above the pectinate line develop from:-endodermal cloacae beiow the pectinate line delelop from :-ectodermal proctodeum