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The superficial inguinal ring (subcutaneous inguinal ring or external inguinal ring) is an anatomical structure in the anterior wall of the mammalian abdomen. It is a triangular opening that forms the exit of the inguinal canal, which houses the ilioinguinal nerve , the genital branch of the genitofemoral nerve , and the spermatic cord (in men ...
Traditionally, a wedding ring was worn only by the bride or wife, but in recent times more men also wear a wedding ring. It is also the custom in some societies to wear an engagement ring on the ring finger. In anatomy, the ring finger is called digitus medicinalis, the fourth digit, digitus annularis, digitus quartus, or digitus IV.
The cricoid cartilage / ˌkraɪkɔɪd ˈkɑːrtɪlɪdʒ /, or simply cricoid (from the Greek krikoeides meaning "ring-shaped") or cricoid ring, is the only complete ring of cartilage around the trachea. It forms the back part of the voice box and functions as an attachment site for muscles, cartilages, and ligaments involved in opening and ...
Cardiac skeleton. In cardiology, the cardiac skeleton, also known as the fibrous skeleton of the heart, is a high-density homogeneous structure of connective tissue that forms and anchors the valves of the heart, and influences the forces exerted by and through them. The cardiac skeleton separates and partitions the atria (the smaller, upper ...
The umbilical ring is a dense fibrous ring surrounding the umbilicus at birth. [ 1] At about the sixth week of embryological development, the midgut herniates through the umbilical ring; six weeks later it returns to the abdominal cavity and rotates around the superior mesenteric artery . Dense embryonic connective tissue encircles the ...
77263. Anatomical terminology. [ edit on Wikidata] The femoral ring is the opening at the proximal, abdominal end of the femoral canal, [ 1] and represents the (superiorly directed/oriented [ 1]) base of the conically-shaped femoral canal. [ 1] The femoral ring is oval-shaped, [ 1] with its long diameter being directed transversely and ...
Anatomical terminology. [ edit on Wikidata] The circle of Willis (also called Willis' circle, loop of Willis, cerebral arterial circle, and Willis polygon) is a circulatory anastomosis that supplies blood to the brain and surrounding structures in reptiles, birds and mammals, including humans. [ 1] It is named after Thomas Willis (1621–1675 ...
Common tendinous ring. The common tendinous ring, also known as the annulus of Zinn or annular tendon, is a ring of fibrous tissue surrounding the optic nerve at its entrance at the apex of the orbit. It is the common origin of the four recti muscles of the group of extraocular muscles . It can be used to divide the regions of the superior ...
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