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Systemic Anatomy Unit 2 > Brain and Cranial Nerves > Flashcards

Flashcards in Brain and Cranial Nerves Deck (78)
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1

What are the four major parts of the adult brain?

Cerebrum
Diencephalon
Cerebellum
Brain Stem

2

What makes up the brain stem?

Midbrain
Pons
Medulla Oblongata

3

What are the two layers of dura mater that cover the brain?

Periosteal Dura
Meningeal Dura

4

What are the dural reflections?

Falx cerebri
Tentorium cerebelli

5

How is cerebrospinal fluid created?

Produced by choroid plexus within the ventricles.

6

What is cerebrospinal fluid?

Clear, colorless liquid.

7

What is cerebrospinal fluid absorbed by?

Arachnoid granulations into blood of superior sagittal sinus.

8

What is the purpose of cerebrospinal fluid?

Provides buoyancy, protection, and chemical stability.

9

What is the chorioid plexus?

Spongy mass of capillaries covered by ependymal cells.

10

What are ependymal cells?

Neurogila cells that line the entire surface of the ventricles and the canals of the brain and spinal cord.

11

What is the cerebrum?

Largest part of the brain, develops from the forebrain

12

What is the Diencephalon?

Superior part of the brain stem, consists of thalamus, hypothalamus and epithalamus.

13

What is the cerebellum?

Posterior to the brain stem and develops from the hind brain.

14

What cranial meninges layer adheres to the skull?

Periosteal layer

15

What separates the two hemispheres of the cerebrum,?

Falx Cerebri

16

What separates the cerebrum from the cerebellum?

Tentorium Cerebelli

17

What are ventricles?

There are four cavities within the brain, filled with cerebrospinal fluid.

18

What does the blood brain barrier consist of?

Tight junctions
Thick basement membrane
Astrocytes

19

How do astrocytes help maintain the permeability of the blood brain barrier?

They press up against capillaries.

20

What is the cerebral cortex?

A region of gray matter that forms the outer rim of the cerebrum.

21

The folds of the brain are called?

Gyri

22

The deepest grooves between the folds are called what?

Fissures

23

The shallower grooves between the folds are called what?

Sulci

24

What connects the two hemispheres of the brain?

Corpus callosum

25

What are the lobes of the cerebrum?

Frontal
Parietal
Temporal
Occipital

26

What separates the frontal lobe from the parietal lobe?

Central Sulcus

27

What contains the primary motor area?

The precentral gyrus, located immediately anterior to the central sulcus.

28

What contains the primary somatosensory area?

The post central gyrus, located immediately posterior to the central sulcus.

29

What separates the frontal lobe from the temporal lobe?

Lateral Cerebral sulcus

30

What separates the parietal lobe from the occipital lobe?

Parieto-occipital sulcus