There are two<unk> a<unk> ia, connecting the left and right epididymis with the seminal vesicles to form the ejaculatory duct in order to move sperm. In humans, each tube is about long, 3 to 5 mm (0.118 to 0.197 inches) in diameter and is muscular (surrounded by smooth muscle). Its epithelium is pseudostratified columnar epithelium lined by stereocilia. They are part of the spermatic cords. Blood supply The<unk>  is supplied by an accompanying artery (artery of<unk> . This artery normally arises from the superior (sometimes inferior) vesical artery, a branch of the internal iliac artery. Nerve supply The<unk>  is innervated by a variety of different types of nerve ending. Adrenergic synapses are found in the smooth muscle layers. Cholinergic synapses and<unk> oactive intestinal peptide synapses are found in the connective tissue of the mucosa. Noradrenergic synapses may also be present in the<unk> .
Vas deferens
Corpus cavernosum penis
Penis
Collyrium
Subfornical organ
Meibomian gland
Uterus
Ovary