Flashcards in Brain and Meninges Deck (16)
connective tissue (dense)
loose areolar tissue
Connective tissue has...
blood vessels and nervous tissue
tough, outer covering of the brain
firmly attached to the skull
in close contact with the arachnoid mater
thin, avascular membrane, enters the longitudinal fissure (between cerebral hemispheres)
(faithful) thin, delicate membrane, closely invests surface of the brain and roots of the cranial nerves.
Tissue material that extends downward and becomes continuous with the pia mater.
small projections of arachnoid mater through the dura mater, CSF drainage.
Infection of the leptomeninges (pia mater and arachnoid mater). It is usually viral, but there is also bacterial and fungal. Viral is less harmful.
Symptoms of meningitis
headache, fever, drowsiness, nausea, stiff neck; later photophobia, ecchymosis (rash), seizures
between arachnoid and pia, the only normally occuring space associated with the meninges. Contains CSF and blood vessels.
Extradural (epidural) space
Potential space between periosteal layer of dura mater and skull.
POTENTIAL space between meningeal layer of dura mater and arachnoid mater.
Extradural (epidural) hemorrhage
1. Middle meningeal artery -- usually from a blow at the pterion.
2. Surgical drainage, craniotomy. Least common type but likelihood of recovery is high.
3. Pool between bone and dura.