system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following is not a constituent of mesorectum?
assistant
The correct answer is  (Refer: Gray’s Anatomy for Students, 1st edition, pg no: 418)
Mesorectal Fascia
 It contains:

Superior rectal artery and its branches.
Superior rectal vein and tributaries.
Lymphatic vessels and nodes along the superior rectal artery.
Branches from the inferior mesenteric plexus which descend to innervate the rectum.
Loose adipose connective tissue.