posterior median fissure

fissure /fis·sure/ (fish´er)

1. any cleft or groove, normal or otherwise, especially a deep fold in the cerebral cortex involving its entire thickness.

2. a fault in the enamel surface of a tooth.

abdominal fissure a congenital cleft in the abdominal wall.

anal fissure , fissure in ano painful lineal ulcer at the margin of the anus.

anterior median fissure a longitudinal furrow along the midline of the anterior aspect of the spinal cord and medulla oblongata.

basisylvian fissure the part of the sylvian fissure between the temporal lobe and the orbital surface of the frontal bone.

fissure of Bichat transverse f. (2).

branchial fissure

1. branchial cleft (1).

2. pharyngeal groove.

calcarine fissure see under sulcus.

central fissure see under sulcus.

collateral fissure see under sulcus.

enamel fissure fissure (2).

hippocampal fissure see under sulcus.

palpebral fissure the longitudinal opening between the eyelids.

parietooccipital fissure see under sulcus.

portal fissure porta hepatis.

posterior median fissure see under sulcus.

presylvian fissure the anterior branch of the fissure of Sylvius.

primary fissure of cerebellum that separating the cranial and caudal lobes in the cerebellum.

fissure of Rolando central sulcus of cerebrum.

sphenooccipital fissure the fissure between the basilar part of the occipital bone and the sphenoid bone.

sylvian fissure , fissure of Sylvius one extending laterally between the temporal and frontal lobes, and turning posteriorly between the temporal and parietal lobes.

transverse fissure

1. porta hepatis.

2. the transverse cerebral fissure between the diencephalon and the cerebral hemispheres.

posterior median fissure

See posterior median sulcus.

posterior median fissure,

a narrow groove in the closed part of the medulla oblongata.

fissure [fish´er]

1. a narrow slit or cleft, especially one of the deeper or more constant furrows separating the gyri of the brain.

2. a deep cleft in the surface of a tooth, usually due to imperfect fusion of the enamel of the adjoining dental lobes. It can be treated with a dental sealant to decrease risk of caries.

abdominal fissure a congenital cleft in the abdominal wall; see also gastroschisis and thoracoceloschisis. Called also celoschisis.

anal fissure (fissure in ano) a painful lineal ulcer at the margin of the anus.

anterior median fissure a longitudinal furrow along the midline of the ventral surface of the spinal cord and medulla oblongata.

fissure of Bichat transverse fissure (def. 2).

branchial fissure pharyngeal groove.

central fissure fissure of Rolando.

collateral fissure a longitudinal fissure on the inferior surface of the cerebral hemisphere between the fusiform gyrus and the hippocampal gyrus.

Henle's f's spaces filled with connective tissue between the muscular fibers of the heart.

hippocampal fissure one extending from the splenium of the corpus callosum almost to the tip of the temporal lobe; called also hippocampal sulcus.

longitudinal fissure the deep fissure between the two cerebral hemispheres.

palpebral fissure the longitudinal opening between the eyelids.

portal fissure porta hepatis.

posterior median fissure

1. a shallow vertical groove in the closed part of the medulla oblongata, continuous with the posterior median fissure of the spinal cord.

2. a shallow vertical groove dividing the spinal cord throughout its length in the midline posteriorly; called also posterior median sulcus.

presylvian fissure the anterior branch of the fissure of Sylvius.

pudendal fissure rima pudendi.

Rolando's fissure (fissure of Rolando) a groove running obliquely across the superolateral surface of a cerebral hemisphere, separating the frontal lobe from the parietal lobe. Called also central fissure and central sulcus.

fissure of round ligament one on the visceral surface of the liver, lodging the round ligament in the adult.

sylvian fissure (fissure of Sylvius) one extending laterally between the temporal and frontal lobes, and turning posteriorly between the temporal and parietal lobes.

transverse fissure

1. porta hepatis.

2. the transverse cerebral fissure between the diencephalon and the cerebral hemispheres; called also fissure of Bichat.

zygal fissure any of the fissures on the cerebral cortex that consist of two branches connected by a stem.

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abdominal fissure anal fissure anterior median fissure basilar sulcus blepharophimosis blepharostenosis calcarine fissure calcarine sulcus celoschisis central fissure central sulcus cerebral sulci collateral fissure collateral sulcus fissura fissure fissure of Bichat fissure of Rolando fissure of round ligament	posterior cutaneous nerve of thigh posterior drawer sign posterior embryotoxon posterior ethmoidal artery posterior ethmoidal nerve posterior facial vein posterior focal point posterior fontanel posterior fossa posterior funiculus posterior horn posterior inferior cerebellar artery syndrome posterior intercostal vein posterior interosseous nerve posterior keratoconus posterior kidney posterior labial nerve posterior labial vein posterior lacrimal crest posterior lateral nasal artery posterior ligament posterior limiting ring posterior liver posterior lobe of hypophysis posterior longitudinal ligament posterior median fissure posterior median line posterior median sulcus posterior mediastinal node posterior mediastinum posterior nares posterior nasal spine posterior neuropore posterior occlusion posterior palatal seal area posterior palatine foramen posterior parietal artery posterior perforated substance posterior pituitary gland posterior pyramid of medulla posterior ramus posterior rhinoscopy posterior rhizotomy posterior root posterior sagittal anorectoplasty posterior scalene muscle posterior scleritis posterior scrotal nerve posterior scrotal vein posterior segment of the eye posterior septal artery of nose	Posterior Lateral Plate Mesoderm Posterior Lateral Rotatory Instability Posterior Lateral Superior Temporal Posterior Leaflet of the Mitral Valve Posterior Left Ventricle Posterior Left Ventricular Wall Thickness Posterior ligament Posterior limiting lamina Posterior limiting lamina posterior limiting membrane posterior limiting membrane posterior limiting membrane posterior limiting membrane posterior limiting ring Posterior Lip Augmentation Device posterior liver Posterior lobe Posterior lobe Posterior lobe posterior lobe of hypophysis Posterior longitudinal ligament Posterior longitudinal ligament Posterior Longitudinal Ligament Ossification Posterior Lower Facial Height Posterior Lumbar Epidural Fat Posterior Lumbar Epidural Space Posterior Lumbar Fusion Posterior Lumbar Interbody Fusion Posterior Malalignment Type Ventricular Septal Defect Posterior Mean Estimator posterior median fissure posterior median line Posterior median septum posterior median sulcus posterior median sulcus posterior median sulcus Posterior mediastinal Posterior mediastinal cavity Posterior mediastinal cavity Posterior mediastinal cavity posterior mediastinal node Posterior mediastinum Posterior medullary velum posterior meningeal artery Posterior Middle Temporal Gyrus Posterior Mitral Leaflet Posterior Mitral Leaflet Motion Posterior Mitral Valve Leaflet posterior nares posterior naris posterior nasal spine posterior nasal spine posterior nasal spine posterior nasal spine Posterior nerve roots Posterior nerve roots posterior neuropore Posterior Nucleus/Zona Incerta Region Posterior Occipital Sharp Transients of Sleep posterior occlusion posterior odds

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