Obturator may refer to:

Medicine

Anatomical structures

Obturator foramen The obturator foramen (Latin foramen obturatum) is the large opening created by the ischium and pubis bones of the pelvis The pelvis (plural pelves or pelvises) is the lower part of the trunk, between the abdomen and the thighs (sometimes ...

Obturator fascia The obturator fascia, or fascia of the internal obturator muscle, covers the pelvic surface of that muscle and is attached around the margin of its origin. Above, it is loosely connected to the back part of the arcuate line, and here it is cont ...

Obturator canal The obturator canal is a passageway formed in the obturator foramen by part of the obturator membrane and the pelvis. It connects the pelvis to the thigh. Structure The obturator canal is formed between the obturator membrane and the pelvis. ...

* Obturator vessels (disambiguation) **

Obturator artery The obturator artery is a branch of the internal iliac artery that passes antero-inferiorly (forwards and downwards) on the lateral wall of the pelvis, to the upper part of the obturator foramen, and, escaping from the pelvic cavity through the ob ...

Obturator veins The obturator vein begins in the upper portion of the adductor region of the thigh and enters the pelvis through the upper part of the obturator foramen, in the obturator canal. It runs backward and upward on the lateral wall of the pelvis below ...

Obturator nerve The obturator nerve in human anatomy arises from the ventral divisions of the second, third, and fourth lumbar nerves in the lumbar plexus; the branch from the third is the largest, while that from the second is often very small. Structure The ob ...

Anterior branch of obturator nerve The anterior branch of the obturator nerve is a branch of the obturator nerve found in the pelvis and leg. It leaves the pelvis in front of the obturator externus and descends anterior to the adductor brevis, and posterior to the pectineus and a ...

Posterior branch of obturator nerve The posterior branch of the obturator nerve pierces the anterior part of the obturator externus, and supplies this muscle; it then passes behind the adductor brevis on the front of the adductor magnus, where it divides into numerous muscular bra ...

Cutaneous branch of the obturator nerve Occasionally the communicating branch to the anterior cutaneous and saphenous branches of the femoral The saphenous nerve (long or internal saphenous nerve) is the largest cutaneous branch of the femoral nerve. It is a strictly sensory nerve, a ...

Obturator internus nerve The nerve to obturator internus, also known as the obturator internus nerve, is a nerve that innervates the obturator internus and gemellus superior muscles. Structure The nerve to obturator internus originates in the lumbosacral plexus. It aris ...

* Accessory obturator nerve *

Obturator membrane The obturator membrane is a thin fibrous sheet, which almost completely closes the obturator foramen. Its fibers are arranged in interlacing bundles mainly transverse in direction; the uppermost bundle is attached to the obturator tubercles and c ...

Obturator crest The anterior border of the superior pubic ramus presents a sharp margin, the obturator crest, which forms part of the circumference of the obturator foramen superiorly and affords attachment to the obturator membrane The obturator membrane is a t ...

Obturator muscles (disambiguation) Obturator muscles may refer to: * External obturator muscle The external obturator muscle, obturator externus muscle (; OE) is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis. It is sometimes conside ...

Obturator internus muscle The internal obturator muscle or obturator internus muscle originates on the medial surface of the obturator membrane, the ischium near the membrane, and the rim of the pubis. It exits the pelvic cavity through the lesser sciatic foramen. The ...

** Obturator externus muscle * Obturator externus groove *

Obturator process The obturator process is an anatomical feature on the pelvis of archosaurs. It is a raised area of the ischium bone of the pelvis.Romer, Alfred S. (1923) "The Pelvic Musculature of Saurischian Dinosaurs" "Bulletin of the American Museum of Natural ...

(in archosaurs)

Diseases and disorders

* Obturator hernia

Medical procedures

* Obturator sign

Medical devices

* Part of a

trocar A trocar (or trochar) is a medical or veterinary device that is made up of an awl (which may be a metal or plastic sharpened or non-bladed tip), a cannula (essentially a hollow tube), and a seal. Trocars are placed through the abdomen during lapa ...

device * A device used as a guide during

tracheostomy Tracheotomy (, ), or tracheostomy, is a surgical airway management procedure which consists of making an incision (cut) on the anterior aspect (front) of the neck and opening a direct airway through an incision in the trachea (windpipe). The re ...

tube insertion *

Palatal obturator {{no footnotes, date=February 2017 The Latham Device Post Latham Nasal Alveolar Molding Device Post Insertion A palatal obturator is a prosthesis that totally occludes an opening such as an oronasal fistula (in the roof of the mouth). They are ...

, a dental prosthesis used to seal an opening in the palate, i.e. cleft palate

Botany

* Part of the

ovary The ovary is an organ in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube into the uterus, where it may become fertilized by a sperm. There is an ovary () found on each side of the bod ...

of a flower that chemically guides the pollen tube to the micropyle

Engineering

Obturator ring An obturator ring was a type of piston ring used in World War I aero engines for improved sealing in the presence of cylinder distortion. Purpose The cylinders of rotary aircraft engines of World War I (engines with the crankshaft fixed to the ...

, a part in early aircraft engines *

Obturating ring {{Other uses, Obturator (disambiguation){{!Obturator An obturating ring is a ring of relatively soft material designed to obturate under pressure to form a seal. Obturating rings are often found in artillery and other ballistics applications, and ...

, used particularly in artillery to form a seal when pressure is applied {{Disambiguation