Blood-brain processing

Blood-brain processing:Blood comes to the brain by the carotid arteries on the front and back of the vertebral arteries, these arteries loop in the lower part of the brain called the loop Willis Circle Of WillisIt called on the name of the doctor of England, and Willis, who lived in the seventeenth century have studied brain anatomy and description nerves cranial (cranial) and learns them and still taught as described, and was also the first to describe the situation known as MYSTHENIA GRAVIS a weak and tired muscle, described the parts of the brain various white matter and lead-article and the link between certain areas of the brain, and cases of epilepsy and the possible reasons, as well as the blood-brain processing has been named the loop formed on the bottom surface of the brain to be named... Said he was giving his dinner once a week for the poor.Willis died at the age of 54 years old.
Possible to divide the artery into seven parts: part of my neck Cervical segment, part of the fossil bone Petrous segment, part in the slot Lacerum segment, part of the cavernous vein Cavernous segment, part brushes Clinoid segment, a theoretical part Ophthalmic, the latter part Communicating.
Cervical first part: starts from the first internal carotid artery consists of division of the common carotid artery to the carotid canal enters Carotid canal in the skull in front of jugular hole in the skull where left internal jugular vein skull INTERNAL JUGULAR VEIN.In the beginning the internal carotid artery bulging and swelling called carotid sinus or carotid bulb. Moving internal carotid artery to the top of the neck inside the cover of so-called atmospheric carotid carotid sheath, and this march be front side outcrops of the top three cervical vertebrae. Then enters the skull through the carotid canal.
Part in the Stone bone Petrous segment:Turn internal carotid artery directly to runs horizontally forward within a channel in the bone steel temporal petrous part of the temporal bone, and here be in place in front of the ear Alosth and Interior then turns to the top to enter the cranial cavity through a hole internals FORAMEN LACERUM These are called hole but think of it as a conduit .When it reaches the internal carotid artery end of the carotid canal carotid canal, it is close to the node fifth cranial nerve Trigeminal ganglion separated only by thin bony roof and fading with age bony roof of the channel so that the node sit directly on the carotid artery and so it looks like it beats ..Within the channel carotid carotid artery surrounded by a sheath is the lengthening of the membrane envelope of the brain dura mater and also surrounded by a number of small veins and carotid fiber network is fiber nervous Smbthawayh. The branches here they are:the vidian artery or artery of the pterygoid canalthe caroticotympanic artery
Part in the slot Lacerum segment: a small part of the artery.
Cavernous segment:After that sagging internal carotid artery forward to enter the cavernous cavity CAVERNOUS SINUS a large vein on each side of the skull and is formed layers of the outer membrane of the brain dura mater, and then turns to the top and back in the cavity behind the extrusion brushes anterior clinoid process
Clinoid segment:Starting from the artery after it comes out of the cavernous vein
Ophthalmic segmentDo not forget the eye to branch OPHTHALMIC ARTERY who enters inside the eye canal with the optic nerve (ahem)
Communicating segment last part:Is divided into three branches:The anterior cerebral arteryMiddle cerebral arteryPosterior cerebral artery
And gives the internal carotid artery branches too small to the pituitary gland and nearby members before it is divided into three branches.