Question

7 of 15
in several places, the inner dural membrane extends inward to form a fold that attaches the brain to the cranial cavity. two of these folds, the falx (falks) cerebri and the (1 ) cerebelli, separate the cerebellum from the cerebrum (shown in figure 7.17). the middle (2 ) layer is the weblike arachnoid (ah - raknoid) mater (see figure 7.17)
arachnida means \spider,\ and some think the arachnoid membrane looks like a cobweb. its threadlike extensions span the (3 ) space to attach it to the innermost membrane, the pia (pīah) mater (\gentle mother\). the delicate pia mater clings tightly to the surface of the brain and spinal cord, following every fold.
the subarachnoid space is filled with cerebrospinal fluid. (remember that the choroid plexuses produce csf) specialized projections of the (4 ) membrane, arachnoid granulations, protrude through the dura mater. the cerebrospinal fluid is absorbed into the venous blood in the dural sinuses through the arachnoid granulations. next, we will discuss the production and flow of (5 ) fluid.

o 1. tentorium 2. meningeal 3. subarachnoid 4. arachnoid 5. cerebrospinal

o 1. meningeal 2. subarachnoid 3. arachnoid 4. cerebrospinal 5. tentorium

o 1. arachnoid 2. cerebrospinal 3. tentorium 4. meningeal 5. subarachnoid

o 5. cerebrospinal 1. tentorium 2. meningeal 3. subarachnoid 4. arachnoid

o 1. subarachnoid 2. arachnoid 3. cerebrospinal 4. tentorium 5. meningeal

Explanation:

The tentorium cerebelli separates the cerebellum from the cerebrum. The middle meningeal layer is the arachnoid mater. Its thread - like extensions span the subarachnoid space. Arachnoid granulations are specialized projections of the arachnoid membrane. The production and flow of cerebrospinal fluid is being discussed.

Answer:

1. tentorium; 2. meningeal; 3. subarachnoid; 4. arachnoid; 5. cerebrospinal