EXCURRENT DUCT SYSTEM

Query  to the GeneNet database:
genes expressing in EXCURRENT DUCT SYSTEM
Select species: AllHumanMurine
Select GeneNet SRS table: GeneProtein
         

Query  to the TRRD database:
genes expressing in EXCURRENT DUCT SYSTEM
Select species:   All       Human     Murine   
           

EFFERENT DUCTULES

Location: at the superior end of the testis and proximal portion of the epididimis

Function: connection the rete testis to the epididimis, reabsorption of the fluid secreted in the seminiferous tubules

Composition: highly convoluted ducts are lined with pseudostratified columnar epithelium that contains clumps of tall cells with cilia and short cells on basal lamina. Among these cells are a few basal cells and intraepithelial lymphocytes. Fibromuscular layer consists of smooth muscle cells and elastic fibers.

DUCTUS EPIDIDIMIS

Location: along the posterior surface of the testis

Function: sperm maturation during their passage, acquiring motility and ability to fertilize an egg.

Composition: highly coiled tube is lined by

Function: absorption of fluid, phagocytosis, and secretion of glycerophosphocholine, sialic acid and glycoproteins, possibly steroids.

Function: rhythmic peristaltic contractions serve to move the sperm

DUCTUS DEFERENS

Location: it ascends and enters abdomen, then descends to the pelvis and connects to the prostatic urethra. The distal part, ampulla, joins with the duct of the seminal vesicle and continues through the prostate as the ejaculatory duct.

Composition:

Ejaculatory duct

Location: inside the prostate gland

Composition: