MIDTERMS - HISTOLOGY OF THE NERVOUS SYSTEM Flashcards
What is a large sponge-like cavity that surrounds the trabeculae, filled with CSF, forms a hydraulic cushion which protects the CNS from trauma?
Subarachnoid Space
What connective tissue covering of the brain is defined as the innermost layer (rests directly on the surface of brain and spinal cord)?
clue: it is a delicate layer
Pia Mater
What do you call the tunnels covered by the Pia matter where blood vessels penetrate the CNS
Perivascular Spaces
What connective tissue covering of the brain is defined as the Outermost layer/ Thick External layer
Dura Mater
What connective tissue in the dura mater is continuous with periosteum in the skull?
Dense, Fibroelastic CT
Fill in the blank:
Around the spinal cord, the dura mater is separated from the periosteum of the vertebrae by the ____________________ (contains a plexus of thin-walled veins and areolar connective tissue)
Epidural Space
What is the Internal & External surface in the Spinal cord which is covered by Simple Squamous Epithelium?
Subarachnoid Space
What is located beneath the dura?
Arachnoid
Dura Mater is also known as?
Pachymeninx
Is dura mater Vascular or Avascular?
Avascular
Dura mater gives rise to the ?
Venous Sinuses
Is arachnoid Vascular or Avascular?
Highly Avascular
The arachnoid gives rise to the ?
Arachnoid Villi
What is responsible for reabsorbing CSF back to venous blood sinus circulation?
Pacchionian granulations
Is pia mater vascular or avascular?
Highly Vascular
