Flashcards in Lecture 3: Structural Organization Deck (16):
What are the two paired skull bones?
Parietal and temporal
What are the four unpaired skull bones?
Frontal, occipital, sphenoid, and ethmoid
Number of vertebrates in each segment
C: 7, T: 12, L: 5, S: 5, C: 1 (fused)
Four folds of the dura mater
Falx cerebri, tentorium cerebelli, falx cerebelli, diaphragma sellae
What is a dural sinus?
Channels critical for venous blood and CSF circulation running between the skull-lining and inner dural layer
What is one prominent dural sinus?
Superior longitudinal sinus
Large pools of CSF in which the pia mater and arachnoid is widely separated
Finger-like extensions of the arachnoid into the dural sinuses
Slow-growing, benign, encapsulated tumors of the meninges; commonly found at sinuses
Two layers of pia mater
Pia intima (forms outer wall of perivascular space) and epipia (continuous with arachnoid trabeculae)
What is the tip of spinal cord called?
What connects the spinal cord to the dura mater? (2)
Dentate ligaments and coccygeal ligament
Where are blood vessels found in the spinal cord? What about in the cerebrum?
Epipial tissue; pia intima (in subarachnoid space)
How many pairs of spinal nerves?
In the cerebrum there are ___ distinct layers of dura. In the spinal cord there are ___
Two; one (no outer layer)