Which of the following is not a constituent of mesorectum?

(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.