lateral aperture of the fourth ventricle

Key,

Ernst A.H., Swedish anatomist and physician, 1832-1901.
foramen of Key-Retzius - one of the two lateral openings of the fourth ventricle into the subarachnoid space at the cerebellopontine angle. Synonym(s): lateral aperture of the fourth ventricle
Key-Retzius corpuscles - tactile corpuscles, resembling pacinian corpuscles, found in the beak of certain aquatic birds.
sheath of Key and Retzius - the delicate connective tissue enveloping individual nerve fibers within a peripheral nerve. Synonym(s): endoneurium

Luschka,

Hubert, German anatomist, 1820-1875.
foramen of Luschka - one of the two lateral openings of the fourth ventricle into the subarachnoid space at the cerebellopontine angle. Synonym(s): lateral aperture of the fourth ventricle
Luschka bursa - a cystic notochordal remnant found inconstantly in the posterior wall of the nasopharynx at the lower end of the pharyngeal tonsil. Synonym(s): pharyngeal bursa
Luschka cartilage - a small cartilaginous nodule sometimes found in the anterior portion of the vocal cord.
Luschka crypt
Luschka cystic glands - small mucous tubuloalveolar glands in the mucosa of the larger bile ducts, especially in the neck of the gallbladder. Synonym(s): glands of biliary mucosa
Luschka ducts - glandlike tubular structures in the wall of the gallbladder, especially in the part covered with peritoneum.
Luschka ganglion
Luschka gland - Synonym(s): Luschka tonsil
Luschka joints - small synovial joints between adjacent lateral lips of the bodies of the lower cervical vertebrae. Synonym(s): uncovertebral joints
Luschka ligaments - fibrous bands that pass from the pericardium to the sternum. Synonym(s): sternopericardial ligament
Luschka muscles
Luschka nerve
Luschka sinus - venous sinus in the petrosquamous suture.
Luschka tonsil - a collection of more or less closely aggregated lymphoid nodules on the posterior wall and roof of the nasopharynx. Synonym(s): Luschka gland; pharyngeal tonsil

Retzius,

Magnus G., Swedish anatomist and anthropologist, 1842-1919.
calcification lines of Retzius - incremental lines of rhythmic deposition of successive layers of enamel matrix during development. Synonym(s): lines of Retzius
foramen of Key-Retzius - see under Key, Ernst AH
Key-Retzius corpuscles - see under Key, Ernst AH
lines of Retzius - Synonym(s): calcification lines of Retzius
Retzius foramen - Synonym(s): lateral aperture of the fourth ventricle
Retzius striae - dark concentric lines crossing the enamel prisms of the teeth, seen in axial cross sections of the enamel. Synonym(s): brown striae; striae parallelae
sheath of Key and Retzius - see under Key, Ernst AH
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