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Male Reproductive System - Coggle Diagram
Male Reproductive System
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Physiology
- Each testis is subdivided into approximately 400 lobules.
- Lobes consist of between 1 and 4 seminiferous tubules.
- These tubules are double ended and are typically 200-350 microns in diameter.
- Both ends empty into a complex network of ducts known as the rete testis
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- Seminiferous tubules are responsible for spermatogenesis
- Between these tubules are leydig cells that are responsible for testosterone production
- Connects epididymis to urethra
- Smooth muscle in vas deferens works to propel spermatozoa along its length during ejaculation (working in unison with the epididymal duct)
- Vas deferens runs out of the scotum through the inguinal cavity (front section of abdomen directly above penis base), into the pelvic cavity.
- this gives rise to a small swelling called the ampulla where it fuses with the duct from the seminal vesicle to form the ejaculatory duct
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- Runs through the lateral wall of the prostate gland and fuses with the urethra.
- (roughly 2cm long) Is formed by the fusion of the vas deferens and the duct from the seminal vesicles
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The urethra is divided into 3 parts (approx. 20cm long)
- Prostatic Urethra: 2-3cm long, runs through middle of prostate where it fuses with the ejaculatory ducts.
- Membranous Urethra: A short portion at the base of the prostate gland
- Penile Urethra: The major constituent of the urethra which runs through the penis
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