Lecture 3: Structural Organization Flashcards Preview

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Flashcards in Lecture 3: Structural Organization Deck (16):
1

What are the two paired skull bones?

Parietal and temporal

2

What are the four unpaired skull bones?

Frontal, occipital, sphenoid, and ethmoid

3

Number of vertebrates in each segment

C: 7, T: 12, L: 5, S: 5, C: 1 (fused)

4

Four folds of the dura mater

Falx cerebri, tentorium cerebelli, falx cerebelli, diaphragma sellae

5

What is a dural sinus?

Channels critical for venous blood and CSF circulation running between the skull-lining and inner dural layer

6

What is one prominent dural sinus?

Superior longitudinal sinus

7

Subarachnoid cisterns

Large pools of CSF in which the pia mater and arachnoid is widely separated

8

Arachnoid villi

Finger-like extensions of the arachnoid into the dural sinuses

9

Describe meningiomas

Slow-growing, benign, encapsulated tumors of the meninges; commonly found at sinuses

10

Two layers of pia mater

Pia intima (forms outer wall of perivascular space) and epipia (continuous with arachnoid trabeculae)

11

What is the tip of spinal cord called?

Conus medullaris

12

What connects the spinal cord to the dura mater? (2)

Dentate ligaments and coccygeal ligament

13

Where are blood vessels found in the spinal cord? What about in the cerebrum?

Epipial tissue; pia intima (in subarachnoid space)

14

How many pairs of spinal nerves?

31

15

In the cerebrum there are ___ distinct layers of dura. In the spinal cord there are ___

Two; one (no outer layer)

16

What is the end the spinal pia mater?

Filum terminale

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