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Cremasteric Artery
The cremasteric artery (external spermatic artery) is a branch of the inferior epigastric artery which accompanies the spermatic cord to supply the cremaster muscle as well as other coverings of the spermatic cord in the male (whereas in the female, the cremasteric artery is very small and accompanies the round ligament). Anatomy Course The cremasteric artery enters the inguinal canal at the deep inguinal ring to traverse the length of the spermatic cord 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 exten ... alongside the testicular artery. Within the spermatic cord, the cremasteric artery travels within the external spermatic fascia, but outside the internal spermatic fascia. Anastomoses The cremasteric artery participates in the formation of a rich arterial anastomotic ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inferior Epigastric Artery
In human anatomy, the inferior epigastric artery is an artery that arises from the external iliac artery. It is accompanied by the inferior epigastric vein; inferiorly, these two inferior epigastric vessels together travel within the lateral umbilical fold (which represents the lateral border of Hesselbach's triangle, the area through which direct inguinal hernias protrude.) The inferior epigastric artery then traverses the arcuate line of rectus sheath to enter the rectus sheath, then anastomoses with the superior epigastric artery within the rectus sheath. Structure Origin The inferior epigastric artery arises from the external iliac artery, immediately superior to the inguinal ligament. Course and relations It curves forward in the subperitoneal tissue, and then ascends obliquely along the medial margin of the abdominal inguinal ring; continuing its course upward, it pierces the transversalis fascia, and, passing in front of the linea semicircularis, ascends betw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spermatic Cord
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. Each testicle develops in the lower thoracic and upper lumbar region and migrates into the scrotum. During its descent it carries along with it the vas deferens, its vessels, nerves etc. There is one on each side. Structure The spermatic cord is ensheathed in three layers of tissue: * '' external spermatic fascia'', an extension of the innominate fascia that overlies the aponeurosis of the external oblique muscle. * '' cremasteric muscle and fascia'', formed from a continuation of the internal oblique muscle and its fascia. * '' internal spermatic fascia'', continuous with the transversalis fascia. The normal diameter of the spermatic cord is about 16 mm (range 11 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cremaster Muscle
The cremaster muscle is a paired structure made of thin layers of striated and smooth muscle that covers the testicles and the spermatic cords in human males. It consists of the lateral and medial parts. Cremaster is an involuntary muscle, responsible for the cremasteric reflex; a protective and physiologic superficial reflex of the testicles. The reflex raises and lowers the testicles in order to keep them protected. Along with the dartos muscle of the scrotum, it regulates testicular temperature, thus aiding the process of spermatogenesis. Structure In human males, the cremaster muscle is a thin layer of striated muscle found in the inguinal canal and scrotum between the external and internal layers of spermatic fascia, surrounding the testis and spermatic cord. The cremaster muscle is a paired structure, there being one on each side of the body. Anatomically, the lateral cremaster muscle originates from the internal oblique muscle, just superior to the inguinal canal, and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artery Of Round Ligament Of Uterus
The artery of the round ligament of the uterus, also known as Sampson's artery, is a branch of the inferior epigastric artery. It runs under, and supplies, the round ligament of the uterus. It constitutes an anastomosis of the uterine artery and ovarian artery. It was originally named after John A. Sampson (1873–1946), an American gynecologist who studied endometriosis. Clinical significance It is considered an insignificant artery that is dissected during hysterectomies. It can be the source of hemoperitoneum Hemoperitoneum (also haemoperitoneum, sometimes also hematoperitoneum) is the presence of blood in the peritoneal cavity. The blood accumulates in the space between the inner lining of the abdominal wall and the internal abdominal organs. Hemope ..., but only rarely does it pose a hemodynamic risk to the patient if severed and it is easily cauterized or sutured to prevent bleeding. References Arteries of the abdomen {{cardiovascular-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inguinal Canal
The inguinal canal is a passage in the anterior abdominal wall on each side of the body (one on each side of the midline), which in males, convey the spermatic cords and in females, the round ligament of the uterus. The inguinal canals are larger and more prominent in males. Structure The inguinal canals are situated just above the medial half of the inguinal ligament. The canals are approximately 4 to 6 cm long, angled anteroinferiorly and medially. In males, its diameter is normally 2 cm (±1 cm in standard deviation) at the deep inguinal ring.The diameter has been estimated to be ±2.2cm ±1.08cm in Africans, and 2.1 cm ±0.41cm in Europeans. A first-order approximation is to visualize each canal as a cylinder. Walls To help define the boundaries, these canals are often further approximated as boxes with six sides. Not including the two rings, the remaining four sides are usually called the "anterior wall", "inferior wall ("floor")", "superior wall ("roof")", and "po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Inguinal Ring
The inguinal canal is a passage in the anterior abdominal wall on each side of the body (one on each side of the midline), which in males, convey the spermatic cords and in females, the round ligament of the uterus. The inguinal canals are larger and more prominent in males. Structure The inguinal canals are situated just above the medial half of the inguinal ligament. The canals are approximately 4 to 6 cm long, angled anteroinferiorly and medially. In males, its diameter is normally 2 cm (±1 cm in standard deviation) at the deep inguinal ring.The diameter has been estimated to be ±2.2cm ±1.08cm in Africans, and 2.1 cm ±0.41cm in Europeans. A first-order approximation is to visualize each canal as a cylinder. Walls To help define the boundaries, these canals are often further approximated as boxes with six sides. Not including the two rings, the remaining four sides are usually called the "anterior wall", "inferior wall ("floor")", "superior wall ("roof")", and "poste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Testicular Artery
The testicular artery (the male gonadal artery, also called the internal spermatic arteries in older texts) is a branch of the abdominal aorta that supplies blood to the testicle. It is a paired artery, with one for each of the testicles. It is the male equivalent of the ovarian artery. Because the testis is found in a different location than that of its female equivalent, it has a different course than the ovarian artery. They are two slender vessels of considerable length, and arise from the front of the aorta a little below the renal arteries. Each passes obliquely downward and lateralward behind the peritoneum, resting on the psoas major, the right lying in front of the inferior vena cava and behind the middle colic and ileocolic arteries and the terminal part of the ileum, the left behind the left colic and sigmoid arteries and the iliac colon. Each crosses obliquely over the ureter and the lower part of the external iliac artery to reach the abdominal inguinal rin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
External Spermatic Fascia
The external spermatic fascia (intercrural or intercolumnar fascia) is a thin membrane, prolonged downward around the surface of the spermatic cord and testis. It is separated from the dartos tunic by loose areolar tissue. It is occasionally referred to as 'Le Fascia de Webster' after an anatomist who once described it. Structure The external spermatic fascia is derived from the aponeurosis of the abdominal external oblique muscle. It is acquired by the spermatic cord at the superficial inguinal ring. References External links * - "The inguinal canal and derivation of the layers of the spermatic cord 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 exten ...." * * () Scrotum Fascia {{Portal bar, Anatomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Spermatic Fascia
The internal spermatic fascia (infundibuliform fascia or Le deuxième fascia de Webster) is a thin layer, which loosely invests the spermatic cord. Structure The internal spermatic fascia is derived from the transversalis fascia. It is acquired by the spermatic cord at the deep inguinal ring. It has very little lymphatic drainage. It is mainly supplied by sensory afferents and the sympathetic nervous system. Additional images File:Gray1144.png, The scrotum. File:Mesorchium.svg, Schematic drawing of a cross-section through the vaginal process. References External links * - "The inguinal canal and derivation of the layers of the spermatic cord 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 exten ...." * * () Scrotum {{genitourinary-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
