lamina affix´a [TA]     the narrow strip of ependyma overlying the thalamostriate vein and stria terminalis in the central part of the lateral ventricle.

lamina ala´ris  alar lamina: either of the pair of longitudinal zones of the embryonic neural tube dorsal to the sulcus limitans, from which are developed the dorsal gray columns of the spinal cord and the sensory centers of the brain; called also   alar plate.

la´minae al´bae cerebel´li  white laminae of the cerebellum: the core of white substance that supports a folium of the cerebellar cortex.

anterior limiting lamina    l. limitans anterior corneae.

lamina ante´rior vagi´nae mus´culi rec´ti abdo´minis [TA]     anterior lamina of sheath of rectus abdominis muscle: the portion of the muscle sheath lying anterior to the rectus abdominis muscle, formed by aponeuroses of the internal and external oblique muscles superior to the arcuate line and by the aponeuroses of the external oblique, internal oblique, and transversus abdominis muscles inferior to the arcuate line.

lamina ar´cus ver´tebrae [TA]     lamina of the vertebral arch: either of the pair of broad plates of bone flaring out from the pedicles of the vertebral arches and fusing together at the midline to complete the dorsal part of the arch and provide a base for the spinous process.

Lamina arcus vertebrae.

basal lamina  the layer of the   basement membrane lying next to the basal surface of the adjoining cell layer, composed of an electron-dense   lamina densa and an electron-lucent   lamina lucida; sometimes used to denote the   lamina densa alone. Cf.   reticular l.
    basement membrane.
    l. basalis (def. 1).

basal lamina of choroid    lamina basalis choroideae.

basal lamina of ciliary body    l. basalis corporis ciliaris.

lamina basa´lis    basal lamina: either of the pair of longitudinal zones of the embryonic neural tube ventral to the sulcus limitans, from which are developed the ventral gray columns of the spinal cord and the motor centers of the brain; called also   basal plate.
    basal l. (def. 1).

lamina basa´lis choroi´deae [TA]       basal lamina of choroid: the transparent inner layer of the choroid, which is in contact with the pigmented layer of the retina. Called also   Bruch layer or   membrane,   complexus basalis choroideae, and vitreal or vitreous lamina.

lamina basa´lis cor´poris cilia´ris [TA]     basal lamina of the ciliary body: the innermost layer of the ciliary body, continuous with the basal lamina of the choroid.

lamina basila´ris duc´tus cochlea´ris [TA]     basilar lamina of cochlear duct: the wall of the cochlear duct, which separates it from the scala tympani; the spiral organ lies against it.

Bowman lamina    l. limitans anterior corneae.

lamina cartila´ginis cricoi´deae [TA]     lamina of cricoid cartilage: the broad posterior part of the cricoid cartilage.

lamina cartila´ginis latera´lis tu´bae auditi´vae    l. lateralis cartilaginis tubae auditivae.

lamina cartila´ginis media´lis tu´bae auditi´vae    l. medialis cartilaginis tubae auditivae.

lamina cartila´ginis thyroi´deae dex´tra/sinis´tra [TA]     right/left lamina of thyroid cartilage: either of the broad plates that form the right and left sides of the cartilage, converging anteriorly to meet at the midline.

lamina choriocapilla´ris    l. choroidocapillaris.

lamina choroidocapilla´ris [TA]       choriocapillary layer: the inner layer of the choroid, composed of a single-layered network of small capillaries; called also   l. choriocapillaris.

la´minae cor´ticis ce´rebri    layers of cerebral cortex.

cribriform lamina    fascia cribrosa.

cribriform lamina of ethmoid bone    l. cribrosa ossis ethmoidalis.

cribriform lamina of transverse fascia  septum femorale.

lamina cribro´sa os´sis ethmoida´lis [TA]       cribriform lamina of ethmoid bone: the horizontal plate of the ethmoid bone that forms the roof of the nasal cavity; it is perforated by many foramina (  foramina cribrosa ossis ethmoidalis) for the passage of the olfactory nerves. On its superior surface is a projection called the   crista galli. Called also   cribriform plate of ethmoid bone.

lamina cribro´sa scle´rae [TA]     the perforated portion of the sclera through which pass the axons of the ganglion cells of the retina; called also   optic foramen of sclera.

lamina of cricoid cartilage    l. cartilaginis cricoideae.

lamina den´sa  an electron-dense layer of the   basal lamina, consisting mainly of Type IV   collagen fibrils and heparan sulfate; it closely follows the plasma membrane of the basal aspect of the adjacent cell layer, from which it is separated by the   lamina lucida. In renal glomeruli and pulmonary alveoli, it is bounded by the   lamina rara externa and the   lamina rara interna.

dental lamina  a horizontal band projecting perpendicularly from the vestibular lamina and extending into the substance of the embryonic gum, assuming a horseshoe-like shape to conform with the dental arches. Called also   l. dentalis and   dentogingival l.

dental lamina, lateral  a lateral band of cells believed to be functionally and structurally similar to the parent dental lamina, which connects the developing tooth germ to the dental lamina. Called also   lateral enamel strand.

lamina denta´lis    dental l.

lamina denta´ta    labium limbi vestibulare.

dentogingival lamina    dental l.

lamina du´ra  see   bundle bone, under bone.

elastic lamina, external  see under   membrane.

elastic lamina, internal  see under   membrane.

lamina elas´tica ante´rior [Bow´mani]    l. limitans anterior corneae.

lamina elas´tica poste´rior [Demour´si]  , lamina elas´tica poste´rior [Desce´meti]    l. limitans posterior corneae.

lamina episclera´lis [TA]     episcleral lamina: loose connective and elastic tissue covering the sclera and anteriorly connecting it with the conjunctiva.

lamina epithelia´lis  epithelial lamina: the layer of ependymal cells covering the choroid plexus.

lamina exter´na calva´riae [TA]       external table of calvarium: the outer compact layer of bone of the flat bones of the skull. Called also   lamina externa cranii, lamina externa ossium cranii, and   outer table of skull.

lamina exter´na cra´nii  , lamina exter´na os´sium cra´nii    l. externa calvariae.

external lamina of peritoneum  peritoneum parietale.

external lamina of pterygoid process    l. lateralis processus pterygoidei.

lamina fibrocartilagi´nea interpu´bica    discus interpubicus.

lamina fibroreticula´ris    reticular l. (def. 1).

lamina fibro´sa  a fibrous layer, as occurs in the cusps of the semilunar valves.

lamina fus´ca scle´rae [TA]     suprachoroid lamina: a thin layer of loose, pigmented connective tissue on the inner surface of the sclera, connecting it with the choroid; from the point of view of the choroid it is called the   lamina suprachoroidea.

lamina granula´ris exter´na [TA]       external granular layer: layer II of the cerebral cortex, composed of many small pyramidal cells and granule cells with short axons.

lamina granula´ris inter´na [TA]       internal granular layer: layer IV of the cerebral cortex, composed of many densely packed granule cells with short axons and some small pyramidal cells, and traversed by a stria of horizontally arranged fibers (external or outer band or line of Baillarger); it contains neurites derived from cells of other layers and areas of the cerebral cortex and subcortical areas.

lamina horizonta´lis os´sis palati´ni [TA]     horizontal plate of palatine bone: the horizontal part of the palatine bone, forming the posterior part of the hard palate.

lamina inter´na calva´riae [TA]     internal table of calvaria: the inner compact layer of bone of the flat bones of the skull. Called also   lamina interna cranii, lamina interna ossium cranii, and   inner table of skull.

lamina inter´na cra´nii  , lamina inter´na os´sium cra´nii    lamina interna calvariae.

internal lamina of pterygoid process    l. medialis processus pterygoidei.

interpubic lamina, fibrocartilaginous    discus interpubicus.

labial lamina  the ectodermal plate that on splitting separates lip from gum, thus forming the labial groove.

labiodental lamina  the thickened ectodermal band from which the dental and labial laminae develop.

labiogingival lamina    labial l.

lateral lamina of cartilage of auditory tube    l. lateralis cartilaginis tubae auditivae.

lamina latera´lis cartila´ginis tu´bae auditi´vae [TA]       lateral lamina of cartilage of auditory tube: the smaller of the two laminae that compose the tubal cartilage; it lies in the lateral wall of the auditory tube. Called also   l. lateralis cartilaginis tubae auditoriae [TA alternative].

lamina latera´lis cartila´ginis tu´bae audito´riae  TA alternative for   l. lateralis cartilaginis tubae auditivae.

lamina latera´lis proces´sus pterygoi´dei [TA]       lateral plate of pterygoid process: either of a pair of bony plates projecting downward from the roots of the greater wings of the sphenoid bone and forming the medial wall of the ipsilateral infratemporal fossa; called also   lateral pterygoid plate.

lamina li´mitans ante´rior cor´neae [TA]       anterior limiting lamina: a thin layer of the cornea beneath the outer layer of stratified epithelium, composed of condensed stroma, between it and the substantia propria; called also   l. elastica anterior [Bowmani] and   Bowman membrane.

lamina li´mitans poste´rior cor´neae [TA]       posterior limiting lamina: a thin hyaline membrane between the substantia propria and the endothelial layer of the cornea; called also   l. elastica posterior [Demoursi] and l. elastica posterior [Descemeti].

limiting lamina, anterior    l. limitans anterior corneae.

limiting lamina, posterior    l. limitans posterior corneae.

lamina lu´cida  an electron-lucent layer of the   basal lamina, composed of laminin, fibronectin, and proteoglycans and lying between the   lamina densa and the adjoining cell layer; in the pulmonary alveoli and renal glomeruli, the lamina lucida is split and found on either side of the   lamina densa, and called the   lamina rara interna and   lamina rara externa.

medial lamina of cartilage of auditory tube    l. medialis cartilaginis tubae auditivae.

medial lamina of pterygoid process    l. medialis processus pterygoidei.

lamina media´lis cartila´ginis tu´bae auditi´vae [TA]       medial lamina of cartilage of auditory tube: the larger of the two laminae that compose the tubal cartilage; it lies in the medial wall of the auditory tube. Called also   l. medialis cartilaginis tubae auditoriae [TA alternative].

lamina media´lis cartila´ginis tu´bae audito´riae  TA alternative for   l. medialis cartilaginis tubae auditivae.

lamina media´lis proces´sus pterygoi´dei [TA]       medial lamina of pterygoid process: either of a pair of bony plates projecting inferiorly from the roots of the greater wings of the sphenoid bone and forming the lateral boundary of the ipsilateral posterior aperture of the nasal cavity and the most posterior part of the lateral wall of the nasal cavity. Called also   medial pterygoid plate.

lamina medul´laris exter´na cor´poris stria´ti  TA alternative for   l. medullaris lateralis corporis striati.

lamina medulla´ris inter´na cor´poris stria´ti  TA alternative for   l. medullaris medialis corporis striati.

lamina medulla´ris latera´lis cor´poris stria´ti [TA]       lateral medullary lamina of corpus striatum: a layer of white substance that separates the lateral globus pallidus from the putamen; called also   external medullary l. of corpus striatum,   lateral medullary stria of corpus striatum, and   l. medullaris externa corporis striati [TA alternative].

lamina medulla´ris latera´lis tha´lami [TA]     external medullary layer of thalamus: one of two layers of myelinated nerve fibers in the dorsal thalami; it covers the lateral surface of the dorsal thalamus and separates it from the internal capsule.

lamina medulla´ris media´lis cor´poris stria´ti [TA]       medial medullary lamina of corpus striatum: a layer of white substance that divides the medial portion of the lentiform nucleus (globus pallidus) into a larger, lateral, and a smaller, medial part; called also   internal medullary l. of corpus striatum,   medial medullary stria of corpus striatum, and   l. medullaris interna corporis striati [TA alternative].

lamina medulla´ris media´lis tha´lami [TA]     internal medullary layer of thalamus: one of two layers of myelinated nerve fibers in the dorsal thalami; it is a vertical sheet of white substance which partially splits anterosuperiorly and separates the medial and lateral nuclei. It contains the intralaminar nuclei.

lamina medulla´ris tha´lami exter´na    l. medullaris lateralis thalami.

lamina medulla´ris tha´lami inter´na    l. medullaris medialis thalami.

medullary lamina of corpus striatum, external    l. medullaris lateralis corporis striati.

medullary lamina of corpus striatum, internal    l. medullaris medialis corporis striati.

medullary lamina of corpus striatum, lateral    l. medullaris lateralis corporis striati.

medullary lamina of corpus striatum, medial    l. medullaris medialis corporis striati.

medullary lamina of thalamus, external    l. medullaris lateralis thalami.

medullary lamina of thalamus, internal    l. medullaris medialis thalami.

lamina membrana´cea tu´bae auditi´vae [TA]     membranous lamina of auditory tube: the connective tissue lamina that supports the medial and lateral parts of the auditory tube.

lamina membrana´cea tu´bae audito´riae  TA alternative for   l. membranacea tubae auditivae.

lamina modi´oli [TA]     lamina of modiolus: a bony plate extending upward toward the cupula as a continuation of the modiolus and of the bony spiral lamina of the cochlea.

lamina molecula´ris [TA]       molecular layer: layer I of the cerebral cortex, the most superficial of the six layers, composed chiefly of a stria of tangentially oriented myelinated nerve fibers; this layer also contains dendritic terminals from cells of deeper layers, some cortical afferent fibers, sparsely scattered horizontal cells of Cajal, and various other cell types. Called also   l. plexiformis corticis cerebri and   plexiform or   zonal layer of cerebral cortex.

lamina multifor´mis [TA]       multiform layer: layer VI of the cerebral cortex, composed of various cell types, chiefly containing irregular fusiform cells, the axons of which project into the white substance of the cerebral cortex hemisphere. Called also   fusiform or   polymorphic layer of cerebral cortex.

lamina muscula´ris muco´sae  muscular layer of tunica mucosa: the thin layer of smooth muscle fibers usually found as a part of the tunica mucosa deep to the lamina propria mucosae.

lamina muscula´ris muco´sae eso´phagi    l. muscularis mucosae oesophagi.

lamina muscula´ris muco´sae gas´tris [TA]     the muscular layer of the   mucous membrane (  tunica mucosa) of the stomach.

lamina muscula´ris muco´sae intesti´ni cras´si [TA]     the muscular layer of the   mucous membrane (  tunica mucosa) of the large intestine.

lamina muscula´ris muco´sae intesti´ni te´nuis [TA]     the muscular layer of the   mucous membrane (  tunica mucosa) of the small intestine.

lamina muscula´ris muco´sae oeso´phagi [TA]     the muscular layer of the   mucous membrane (  tunica mucosa) of the esophagus. Written also   l. muscularis mucosae esophagi.

lamina muscula´ris muco´sae ventri´culi    l. muscularis mucosae gastris.

nuclear lamina  a tightly woven meshwork composed of lamins that lines the nuclear side of the inner nuclear membrane; it is believed to control the shape of the nucleus and it mediates interactions of the inner   nuclear membrane with chromatin.

lamina orbita´lis os´sis ethmoida´lis [TA]     orbital lamina of ethmoid bone: a thin plate of bone laterally bounding the ethmoid labyrinth on either side and forming part of the medial wall of the orbit; called also   l. papyracea.

palatine lamina of maxilla    processus palatinus maxillae.

lamina papyra´cea    l. orbitalis ossis ethmoidalis.

lamina parieta´lis pericar´dii sero´si [TA]     parietal layer of serous pericardium: the outer of the two layers of the serous pericardium, lining the fibrous pericardium. Called also   parietal pericardium and   parietal layer of pericardium.

lamina parieta´lis tu´nicae vagina´lis tes´tis [TA]       parietal layer of tunica vaginalis of testis: the outer layer of the   tunica vaginalis testis, separated from the   visceral layer by a cavity.

periclaustral lamina    capsula extrema.

lamina perpendicula´ris os´sis ethmoida´lis [TA]     perpendicular lamina of ethmoid bone: a thin bony plate that descends from the inferior surface of the cribriform plate of the ethmoid bone and participates in forming the nasal septum; called also   perpendicular plate of ethmoid bone.

lamina perpendicula´ris os´sis palati´ni [TA]     perpendicular plate of palatine bone: the flat, vertical, bony plate that extends superiorly on either side from the palatine bone; it is surmounted by the orbital and sphenoidal processes.

lamina plexifor´mis cor´ticis ce´rebri    l. molecularis.

posterior limiting lamina    l. limitans posterior corneae.

lamina poste´rior vagi´nae mus´culi rec´ti abdo´minis [TA]     posterior lamina of sheath of rectus abdominis muscle: the portion of the muscle sheath lying posterior to the rectus abdominis muscle, formed by the transversus abdominis muscle and its aponeurosis at the level of the xiphoid process; inferior to the xiphoid process, as far as the arcuate line, it is formed by the aponeuroses of the internal oblique and the transversus abdominis muscles.

lamina pretrachea´lis fas´ciae cervica´lis [TA]       pretracheal layer of cervical fascia: the layer of deep cervical fascia that is anterior to the trachea and surrounds the thyroid gland; see also   anterior visceral space. Called also   pretracheal fascia and   middle layer of deep cervical fascia.

lamina prevertebra´lis fas´ciae cervica´lis [TA]       prevertebral layer of cervical fascia: the layer of deep cervical fascia that is anterior to the vertebrae and posterior to the trachea and esophagus; it invests the scalene and levator scapulae muscles and is continuous laterally with the membrana suprapleuralis. Called also   prevertebral fascia.

lamina profun´da fas´ciae tempora´lis [TA]     deep layer of temporal fascia: the deep portion of the fascia investing the temporal muscle.

lamina profun´da mus´culi levato´ris pal´pebrae superio´ris [TA]     the deeper of the two layers of the levator palpebrae superioris muscle, the fibers of which are attached to the tarsus superior palpebrae.

lamina pro´pria membra´nae tympa´nicae    fibrous stratum of tympanic membrane.

lamina pro´pria muco´sae  proper mucous membrane: the connective tissue coat of a mucous membrane just deep to the epithelium and basement membrane.

lamina pyramida´lis exter´na [TA]       external pyramidal layer: layer III of the cerebral cortex, composed of an inner zone of medium-sized pyramidal cells and an outer zone of larger pyramidal cells and other cells whose dendrites and axons extend beyond this layer.

lamina pyramida´lis gangliona´ris  , lamina pyramida´lis inter´naTA    internal pyramidal layer: layer V of the cerebral cortex, composed of the largest pyramidal cells, Martinotti cells, and Betz cells, and traversed by a stria of horizontally arranged fibers (  Baillarger inner line); the axons of the pyramidal cells leave this layer as either association, projection, or commissural fibers. Called also   ganglionic layer of cerebral cortex.

lamina quadrige´mina  TA alternative for l. tecti mesencephali.

lamina ra´ra    l. lucida.
  see   l. rara externa and   l. rara interna.

lamina ra´ra exter´na  the   lamina lucida on the epithelial side of the   lamina densa in a   renal glomerulus or   pulmonary alveolus.

lamina ra´ra inter´na  the   lamina lucida on the endothelial side of the   lamina densa in a   renal glomerulus or   pulmonary alveolus.

reticular lamina  , lamina reticula´ris  a layer of the basement membrane, adjacent to the connective tissue, seen in some epithelia; it is of variable thickness and is composed of condensed connective tissue with a reticulum of collagen fibers. Cf.   basal l.
    membrana reticularis organi spiralis.

Rexed laminae  an architectural scheme used to classify the structure of the spinal cord, based on the cytological features of the neurons in different regions of the gray substance. It consists of nine laminae (I–IX) that extend throughout the cord, roughly paralleling the dorsal and ventral columns of the gray substance, and a tenth region (  area X, called also lamina X) that surrounds the central canal and consists of the dorsal and ventral commissures and the central gelatinous substance.

Rexed laminae in a cross section of the spinal cord at approximately the level of the seventh cervical vertebra (C7).

lamina rostra´lis  rostral lamina: the thin terminal part of the rostrum of the corpus callosum passing down in front of the anterior commissure to the anterior perforated substance and the paraterminal gyrus.

lamina sep´ti pellu´cidi [TA]     lamina of septum pellucidum: either of the thin, vertical sheets, separated by a cleftlike space, which constitute the septum pellucidum.

spinal laminae  , lami´nae spina´les I–IX    Rexed laminae.

lamina spina´lis X [TA]     TA alternative for   area spinalis X; see also   Rexed laminae.

spiral lamina, bony  , spiral lamina, osseous    l. spiralis ossea.

spiral lamina, secondary    l. spiralis secundaria.

lamina spira´lis os´sea [TA]       bony spiral lamina: a double plate of bone winding spirally around the modiolus and dividing the spiral canal of the cochlea incompletely into two parts, the scala tympani and the scala vestibuli; called also   spiral plate.

lamina spira´lis secunda´ria [TA]     secondary spiral lamina: a bony projection on the outer wall of the osseous spiral lamina in the lower part of the first turn of the cochlea.

lamina superficia´lis fas´ciae cervica´lis [TA]     superficial layer of cervical fascia: the most superficial of the deep layers of cervical fascia, surrounding the neck superficial to the pretracheal layer; it invests the trapezius and sternocleidomastoid muscles and is attached posteriorly to the vertebrae. Called also   superficial cervical fascia,   superficial layer of deep cervical fascia, and   investing layer of cervical fascia or of deep cervical fascia.

lamina superficia´lis fas´ciae tempora´lis [TA]     superficial layer of temporal fascia: the superficial portion of the fascia investing the temporal muscle.

lamina superficia´lis mus´culi levato´ris pal´pebrae superio´ris [TA]     the superficial of the two layers of the levator palpebrae superioris muscle.

lamina suprachoroi´dea [TA]     suprachoroid lamina: see   l. fusca sclerae.

lamina supraneuropo´rica  the part of lamina terminalis caudal to the anterior neuropore of the embryo; it cannot be delimited accurately in human embryos.

lamina tecta´lis mesence´phali  , lamina tec´ti mesence´phaliTA    tectal plate: the layer of mingled gray and white substance in the tectum of the mesencephalon, from which arise the superior and inferior colliculi. Called also   l. quadrigemina and   quadrigeminal plate.

lamina termina´lis hypotha´lami [TA]     terminal lamina of hypothalamus: a thin plate derived from the telencephalon extending upward from the optic chiasm and preoptic recess, and forming the anterior wall of the third ventricle of the cerebrum; called also   terminal plate.

lamina of thyroid cartilage, right and left    l. cartilaginis thyroideae [dextra/sinistra].

lamina tra´gi  , lamina tra´gica [TA]     lamina of tragus: the longitudinal curved lamina of cartilage in the tragus of the auricle, at the beginning of the cartilaginous portion of the external acoustic meatus.

vascular lamina of choroid    l. vasculosa choroideae.

lamina vasculo´sa choroi´deae [TA]       vascular lamina of choroid: the layer of the choroid between the suprachoroid and choriocapillary layers, containing the largest blood vessels; called also   Haller membrane.

lamina of vertebra  , lamina of vertebral arch    l. arcus vertebrae.

lamina viscera´lis pericar´dii sero´si [TA]       visceral layer of pericardium: the inner layer of the serous pericardium; it is in contact with the heart and the roots of the great vessels; called also epicardium,  visceral pericardium, and visceral layer of serous pericardium.

lamina viscera´lis tu´nicae vagina´lis tes´tis [TA]       visceral layer of tunica vaginalis testis: the inner part of the   tunica vaginalis testis, firmly attached to the testis and epididymis. Called also   tunica serosa testis.

lamina vi´trea  , vitreal lamina  , vitreous lamina    lamina basalis choroideae.

white laminae of cerebellum    laminae albae cerebelli.