anterior median fissure (redirected from Anterior 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.

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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.

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anterior median fissure

n.

The longitudinal groove in the midline of the anterior aspect of the medulla oblongata, continuous with the anterior median fissure of the spinal cord and ending at the foramen cecum medullae oblongatae.