Male Infertility expertise right here in Acadiana
Located in Beaullieu Square
200 Beaullieu Drive Bldg #7
Lafayette, LA 70508
No Referral Required
Chris Fontenot, MD, FACS
Male fertility expertise available in Acadiana & surrounding areas.
The pituitary gland is about the size of a pea, and is located at the base of the brain.
Normal sperm production in men is the result of a complex series of interactions between the pituitary gland, and the testicles. The pituitary gland produces two hormones (among many others), follicle stimulating hormone (FSH) and luteinizing hormone (LH), which work in tandem to propagate sperm production in the testicles.
LH effects production of testosterone by a group of cells in the testicle called Leydig Cells. Some of the testosterone produced is released into the blood stream, and gives men their "secondary sex characteristics", ie. deep voice, facial hair, muscle strength, etc. Testosterone produced by Leydig Cells also diffuses in high concentrations into the adjacent seminiferous tubules, which is the site of spermatogenesis, or sperm production.
Sperm are produced in seminiferous tubules, under the influence of FSH from the pituitary gland, and testosterone from Leydig cells.
As can be seen in the figure at left, a mature sperm starts as a spermatogonium, or the stem cell in the male. A complex series of divisions and cellular processes must occur to produce a sperm. DNA is of the utmost importance in this process, which takes about 71 days.
Mature sperm are then transported to the epididymis, which is a structure that attaches the penis to the vas deferens. It is within the epididymis that sperm are stored, and undergo further changes that allow them the ability to fertilize an ovum.
The vas deferens is the tube that carries sperm outward, toward the prostate and urethra.Sperm that is ejaculated comes from the vas deferens, and the distal part of the epididymis.