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Anatomy photo:36:07-0301 at the SUNY Downstate Medical Center—"Inguinal Region, Scrotum and Testes: Layers of the Spermatic Cord" Anatomy photo:44:02-0301 at the SUNY Downstate Medical Center—"The Male Pelvis: Distribution of the Peritoneum in the Male Pelvis" MedicalMnemonics.com: 2424 319 [dead link ]
However, the surface anatomy of the point is disputed. In a recent study, [ 8 ] it was found to be in a region between the mid-inguinal point (situated midway between the anterior superior iliac spine and the pubic symphysis ) and the midpoint of the inguinal ligament (i.e. midway between the anterior superior iliac spine and the pubic tubercle ).
It carries with it the ductus deference, which are testicular vessels and nerves, a portion of the abdominal muscle, and lymph vessels. All of the structures remain attached to the testis and form what is known as the spermatic cord. By the time the testis is in the scrotal sac, the gubernaculum is no more than a remnant of scar like tissue. [10]
A testicle or testis (pl. testes) is the gonad in all male bilaterians, including humans, and is homologous to the ovary in females. Its primary functions are the production of sperm and the secretion of androgens, primarily testosterone. The release of testosterone is regulated by luteinizing hormone (LH) from the anterior pituitary gland.
The testicle in the male and the ovary in the female are called the primary sex organs. [1] All other sex-related organs are known as secondary sex organs . The outer parts are known as the genitals or external genitalia , visible at birth in both sexes, [ 1 ] [ pages needed ] while the inner parts are referred to as internal genitalia , which ...
This is why the testes are carried in an external scrotum rather than within the abdomen; they normally remain slightly cooler than body temperature, facilitating sperm production. Male germ cells produced in the testes are able to perform special DNA repair processes during meiosis that act to repair DNA damages and to maintain the integrity ...
The spermatic cord is the cord-like structure in males formed by the vas deferens (ductus deferens) and surrounding tissue that runs from the deep inguinal ring down to each testicle. Its serosal covering, the tunica vaginalis , is an extension of the peritoneum that passes through the transversalis fascia .
The tunica albuginea is a dense, [1] [2] blue-white [3] layer of fibrous tissue surrounding the testis. [1] [4] It is the middle of three envelopes forming the capsule of the testis; it is deep to the visceral layer of tunica vaginalis, and superficial to the tunica vasculosa testis (vascular layer of testis).