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The pyriform sinus (also piriform recess, piriform sinus, piriform fossa, or smuggler's fossa) is a small recess on either side of the laryngeal inlet. It is bounded medially by the aryepiglottic fold , and laterally by the thyroid cartilage and thyrohyoid membrane . [ 1 ]
Piriformis muscle, a gluteal muscle Piriformis syndrome, a neuromuscular disorder in which the piriformis muscle compresses the sciatic nerve; Piriform sinus, piriform recess or piriform fossa, synonyms referring to one of the four sites of the hypopharynx; The (notionally) pear-like female body shape (gynoid shape)
The fascia of the piriformis is very thin and is attached to the front of the sacrum and the sides of the greater sciatic foramen; it is prolonged on the muscle into the gluteal region. At its sacral attachment around the margins of the anterior sacral foramina it comes into contact with and ensheathes the nerves emerging from these foramina.
The piriform aperture, pyriform aperture, or anterior nasal aperture is a pear-shaped opening in the human skull.Its long axis is vertical, and narrow end upward; in the recent state it is much contracted by the lateral nasal cartilage and the greater and lesser alar cartilages of the nose.
A heavily scrutinized anatomic variation involves sciatic nerve branching around the piriformis using the 6 category classification first described by Beaton and Anson. In this classification, the normal anatomy (type A) seen in about 80% of people is where the sciatic nerve passes under the piriformis muscle at the greater sciatic notch.
This is a list of human anatomy mnemonics, categorized and alphabetized.For mnemonics in other medical specialties, see this list of medical mnemonics.Mnemonics serve as a systematic method for remembrance of functionally or systemically related items within regions of larger fields of study, such as those found in the study of specific areas of human anatomy, such as the bones in the hand ...
The piriformis muscle (from Latin piriformis 'pear-shaped') is a flat, pyramidally-shaped muscle in the gluteal region of the lower limbs. It is one of the six muscles in the lateral rotator group . The piriformis muscle has its origin upon the front surface of the sacrum , and inserts onto the greater trochanter of the femur .
The superior border is free; it is thick and irregular, and marked near the center by an impression for the insertion of the piriformis.. The inferior border corresponds to the line of junction of the base of the trochanter with the lateral surface of the body; it is marked by a rough, prominent, slightly curved ridge, which gives origin to the upper part of the vastus lateralis.