What is fissure Wikipedia?
A fissure is a long, narrow crack opening along the surface of the Earth. It is derived from the Latin word fissura, which means ‘cleft’ or ‘crack’. Fissures emerge in the Earth’s crust, on ice sheets and glaciers, and on volcanoes.
What are the 3 fissures of the brain?
It consists of three distinct regions: the hindbrain, the midbrain, and the forebrain. Although the brain of higher vertebrates undergoes considerable modification during embryonic development, these three regions are still discernible.
What are the 2 fissures of the brain?
The central sulcus, or fissure of Rolando, separates the frontal and parietal lobes, and the deeper lateral sulcus, or fissure of Sylvius, forms the boundary between the temporal lobe and the frontal and parietal lobes.
What is a fissure skull?
Fissures. What is a fissure? The skull consists of a number of plate like bones which are joined together by fibrous areas which allow a little bit if movement, these are called sutures. Sometimes there are other areas where the bone is not so hard or not joined well and we call these fissures (incomplete ossification) …
What is brain fissure?
The longitudinal fissure (or cerebral fissure, great longitudinal fissure, median longitudinal fissure, interhemispheric fissure) is the deep groove that separates the two cerebral hemispheres of the vertebrate brain. Lying within it is a continuation of the dura mater (one of the meninges) called the falx cerebri.
What is fissure brain?
What is fissure in anatomy?
1 : a natural cleft between body parts or in the substance of an organ: as. a : any of several clefts separating the lobes of the liver. b : any of various clefts between bones or parts of bones in the skull.
What is the difference between foramen and fissure?
Fissure – An open slit in a bone that usually houses nerves and blood vessels. Examples include superior and inferior orbital fissure. Foramen – A hole through which nerves and blood vessels pass. Examples include supraorbital foramen, infraorbital foramen, and mental foramen on the cranium.