BLD 402: CNS EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS GRADED A++
What is the bone involved in the CNS?
Skull and vertabrae
What are the meninges and spaces involved in the CNS?
Layers of covering membranes and spaces between those membranes
What is the epidural space?
Space between bone and dura mater where epidural anesthesia is injected
What is the dura mater?
Thick layer made of periosteal layer and meningeal layer
What is the arachnoid mater?
Thin membrane
What is the subarachnoid space?
Space where cerebral spinal fluid flows
What is the pia mater?
Adheres to the surface of the neural tissue, contains blood vessels
What is the order of the circulation pathway for the blood-brain barrier?
1.) Artery
2.) Choroid plexus
3.) Ventricle
4.) Subarachnoid space
, 5.) Arachnoid villus
6.) Vein
What is the choroid plexus?
Network of capillaries with sheet of special cells. Limited number of components can
pass through here from blood.
Which blood components can pass through the choroid plexus?
-Very small compounds & ions: glucose, hormones, amino acids, electrolytes
-Gas
-Low polarity organic compounds: unconjugated bilirubin, organic solvents
What are the ventricles?
Fluid filled space within the brain
What does the subarachnoid space contain?
Fluid from the ventricles
What happens at the arachnoid villus?
Fluid and components go back to the blood flow
Where is CSF produced?
Choroid plexus
What is the ratio of CSF proteins to plasma proteins?
1:200
What are the origins of CSF proteins?
-Plasma: transporting protein
-Synthesized by CNS
What is the concentration of CSF glucose?
COMPLETE SOLUTIONS GRADED A++
What is the bone involved in the CNS?
Skull and vertabrae
What are the meninges and spaces involved in the CNS?
Layers of covering membranes and spaces between those membranes
What is the epidural space?
Space between bone and dura mater where epidural anesthesia is injected
What is the dura mater?
Thick layer made of periosteal layer and meningeal layer
What is the arachnoid mater?
Thin membrane
What is the subarachnoid space?
Space where cerebral spinal fluid flows
What is the pia mater?
Adheres to the surface of the neural tissue, contains blood vessels
What is the order of the circulation pathway for the blood-brain barrier?
1.) Artery
2.) Choroid plexus
3.) Ventricle
4.) Subarachnoid space
, 5.) Arachnoid villus
6.) Vein
What is the choroid plexus?
Network of capillaries with sheet of special cells. Limited number of components can
pass through here from blood.
Which blood components can pass through the choroid plexus?
-Very small compounds & ions: glucose, hormones, amino acids, electrolytes
-Gas
-Low polarity organic compounds: unconjugated bilirubin, organic solvents
What are the ventricles?
Fluid filled space within the brain
What does the subarachnoid space contain?
Fluid from the ventricles
What happens at the arachnoid villus?
Fluid and components go back to the blood flow
Where is CSF produced?
Choroid plexus
What is the ratio of CSF proteins to plasma proteins?
1:200
What are the origins of CSF proteins?
-Plasma: transporting protein
-Synthesized by CNS
What is the concentration of CSF glucose?
