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1. a stain, spot, or thickening; in anatomy, an area distinguishable by color or otherwise from its surroundings. Often used alone to refer to the macula retinae.
2. a discolored spot on the skin that is not raised above the surface; called also macule.
3. a corneal scar that can be seen without special optical aids; it presents as a gray spot intermediate between a nebula and a leukoma.
4. macula lutea. adj., adj mac´ular, mac´ulate.
macula atro´phica a white atrophic patch on the skin.
macula ceru´lea a blue patch on the skin seen in pediculosis.
macula cribro´sa a perforated spot or area; one of three perforated areas (inferior, medial, and superior) in the wall of the vestibule of the ear through which branches of the vestibulocochlear nerve pass to the saccule, utricle, and semicircular canals.
macula den´sa a zone of heavily nucleated cells in the distal renal tubule that feed information to the juxtaglomerular cells.
macula fla´va a yellow nodule at one end of a vocal cord.
macula folli´culi follicular stigma.
macula germinati´va germinal area; the part of the ovum where the embryo is formed.
macula lu´tea (macula lu´tea re´tinae) (macula re´tinae) an irregular yellowish depression on the retina, lateral to and slightly below the optic disk; receives and analyzes light only from the center of the visual field.
macula sac´culi a thickening on the wall of the saccule where the epithelium contains hair cells that receive and transmit vestibular impulses.
macula utri´culi a thickening in the wall of the utricle where the epithelium contains hair cells that are stimulated by linear acceleration and deceleration and by gravity.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
macula of retina[TA]
an oval area of the sensory retina, 3 × 5 mm, temporal to the optic disc corresponding to the posterior pole of the eye; at its center is the central fovea, which contains only retinal cones.
Synonym(s): macula lutea [TA], area centralis, macula retinae, macular area, punctum luteum, Soemmerring spot, yellow spot
Farlex Partner Medical Dictionary © Farlex 2012
See macula lutea.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
mac·u·la of ret·i·na(mal'yū-lă ret'i-nă) [TA]
An oval area of the sensory retina,3-5 mm, temporal to the optic disc corresponding to the posterior pole of the eye; at its center is the central fovea, which contains only retinal cones.
Synonym(s): macula retinae [TA] .
Synonym(s): macula retinae [TA] .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
Soemmerring,Samuel Thomas von, German anatomist, 1755-1830.
ring of Soemmerring - a mass of lenticular fibers enclosed between the anterior and posterior portion of the lenticular capsule, leaving the pupillary area relatively free.
Soemmerring ganglion - a large cell mass extending forward over the dorsal surface of the crus cerebri from the rostral border of the pons into the subthalamic region. Synonym(s): substantia nigra
Soemmerring ligament - small fibers attaching the lacrimal gland to the periorbita.
Soemmerring muscle - a fasciculus occasionally passing from the thyrohyoid muscle to the isthmus of the thyroid gland. Synonym(s): levator muscle of thyroid gland
Soemmerring spot - an oval area of the sensory retina at the center of which is the central fovea, which contains only retinal cones. Synonym(s): macula retinae
Medical Eponyms © Farlex 2012