lamina (lam'in-ah)

A thin layer or lamella, dorsal laminae. The dorsal ridges of the embryo, embryonic terminal 1. The wall which closes the primary forebrain in front. external medullary 1. The outer of two white laminae in the nucleus lentiform is. inner medullary 1., internal medullary 1. A layer of fibers which pa from the thalamus to the red nucleus. 1. cart i lag in is cricoideae. The flat, platelike, posterior portion of the cricoid cartilage. laminae cart i lag in is thyroideae. The alae of the thyroid cartilage. 1. cboroidea inferior. The choroid plexus of the fourth ventricle. 1. cinerea. Syn.: eminent i a cinerea, corpus cinereum. A thin layer of gray matter situated between the corpus callosum and the optic chiasm, connected with the tuber cinereum superiorly and with the anterior perforated spaces laterally. It forms a part of the inferior boundary of the third ventricle, laminae concharum. The internal surfaces of the lateral ma es of the ethmoid bones. 1. cribrosa. 1. That portion of the sclerotic coat behind, through which the optic nerve penetrates the eyeball. 1. cribrosa anterior inferior. The anterior portion of the fo ula inferior. It contains openings for the pa age of the divisions of the cochlear branch of the auditory nerve. 1. cribrosa cerebri. A partly gray, partly white 1. perforated with many openings for the pa age of blood ve els, situated beside and in front of the anterior end of the optic tract. 1. cribrosa choroideae. The portion of the choroid in the lower animals which presents a number of foramina for the pa age of the optic nerve into the eye. 1. cribrosae fasciae latae. The perforated layer of fascia filling in the saphenous opening. 1. elastic a (Bowmani, seu corneae) anterior. A clear, structural layer of the cornea situated between the epithelial layer and the subs tanti a propria. 1. fusc a. See /. sup rach oroide a. 1. genu. A small, thin medullary 1. extending from the genu of the corpus callosum backward to the 1. terminal is. laminae lent is. The concentric layers which form the crystalline lens. 1. mas to idea. The basal plate of the mastoid proce . 1. medullar is. A layer of medullated nerve fibers representing the thickened external layer of the typical cerebral cortex inclosed in the fold made by the stratum convolutum of the hippocampus. 1.propria of the membrana tympani. The middle fibrous layer of the tympanic membrane. 1. quadrigemina. A layer of gray matter forming the roof of the aqueduct of Sylvius and supporting the corpora quadrigemina. 1. spiral is. Syn.: crista spiral is. A 1. which divides the interior of the spiral canal of the cochlea into two scalae. It is divided into the 1. spiral is o ea and the 1. spiral is membranacea, or membrana. 1. sup rach oroide a. Syn.: /. fusc a. The outermost layer of the choroid, consisting of very thin, delicate, and loose meshed areolar ti ue mingled with pigment cells of irregular shape, either scattered or clustered together, and composing communicating lymph spaces, vitreous 1. A smooth, transparent membrane covering the inner surface of the choroid. [Lat, lamina, plate, sheet, leaf.]