Briefly explain about skull
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- Skull is the upper most part of our skeletal system in which our main part of our body named brain is present there.
- Skull is made by hard carbonates of calcium which protects our brain very well.
- Between brain and skull a fluid is present named celebrospinal fluid in layer.
- Its structure is in such a way that hole brain can be protects from all sides.
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- SKULL,OR CRANIUM, IS A SET OF BONES THAT MAKE UP HEAD OF A VERTEBRATE.
- IT SUPPORTS THE STRUCTURE OF THE FACE AND FORMS A PROTECTIVE CAVITY FOR BRAIN.
- IT ALSO FIXES DISTANCE BETWEEN EYES AND EARS .THIS ALLOWS STEREOSCOPIC VISION AND HELPS THE BRAIN TO JUDGE DIRECTION AND DISTANCE OF SOUNDS.
- IN SOME ANIMALS SKULL THEY HAVE A DEFENSIVE FUNCTION. THE FRONTAL BONE IS WHERE THE HORNS ARE MOUNTED.
- A SKULL IS MADE UP OF NUMBER OF JOINED FLAT BONES .IN HUMANS ,ADULT SKULL IS NORMALLY MADE UP OF 28 BONES . SKULLS CAN BE CLASSIFIED ON THE BASIS OF FENESTRA OR OPENING IN A SKULL. THERE ARE 5 TYPES OF FENESTRA:
- ANTORBITAL FENESTRA
- MANDIBULAR FENESTRA
- QUADRATOJUGAL FENESTRA
- SUBSQUAMOSAL FENESTRA
- TEMPORAL FENESTRA
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