Meninges and cerebral vasculature Flashcards Preview

Neuroscience Deja Review USMLE 1 > Meninges and cerebral vasculature > Flashcards

Flashcards in Meninges and cerebral vasculature Deck (22):
1

What are the three layers of the meninges?

 “The meninges PAD the CNS”
1. P ia
2. A rachnoid
3. D ura

2

What meningeal space, which lies between the pia and arachnoid, contains the cerebrospinal fluid (CSF)?

Subarachnoid space

3

What structure produces CSF?

The choroid plexus of the lateral, third, and fourth ventricles

4

What structures reabsorb CSF into venous circulation?

The arachnoid granulations

5

Trace the flow of CSF from the choroid plexus into venous circulation.

Choroid plexus → lateral ventricles → interventricular foramina (of Monro) → third ventricle → cerebral aqueduct → fourth ventricle → lateral foramina (of Luschka) or median foramen (of Magendie) → subarachnoid space → arachnoid granulations → superior sagittal sinus

6

What are the three major functions of CSF?

1. To provide support and protection to the CNS
2. To remove metabolic waste products
3. To transport hormones and cytokines throughout the CSF and to the systemic circulation

7

Blood vessel that supplies the Anterior two-thirds of the spinal cord, the medullary pyramids, medial lemniscus, and root fibers of cranial nerve (CN) XII

Anterior spinal artery

8

Blood vessel that supplies the Retina

Central artery of the retina (a branch of the ophthalmic artery

9

Blood vessel that supplies the Lateral geniculate body, globus pallidus, posterior limb of internal capsule

Anterior choroidal artery (an important branch of internal carotid artery)

10

Blood vessel that supplies the Hypothalamus and ventral thalamus

Posterior communicating artery

11

Blood vessel that supplies the Leg-foot area of motor and sensory cortices

Anterior cerebral artery (ACA)

12

Blood vessel that supplies the Anterior putamen, caudate nucleus, and anteroinferior internal capsule

Medial striate arteries (branches of the ACA)

13

Blood vessel that supplies the Broca (expressive) and Wernicke (receptive) speech areas, face and arm areas of motor cortices, frontal eye field

Middle cerebral artery (MCA)

14

Blood vessel that supplies the Internal capsule, caudate nucleus, putamen, globus pallidus

Lateral striate arteries (branches of the MCA)

15

Blood vessel that supplies the Nucleus ambiguus and the inferior surface of the cerebellum

Posterior inferior cerebellar artery

16

Blood vessel that supplies the Caudal lateral pontine tegmentum (including portions of the nuclei of CN V, VII) and the inferior cerebellar surface

Anterior inferior cerebellar artery

17

Blood vessel that supplies the Superior surface of cerebellum, cerebellar nuclei, and the cochlear nuclei

Superior cerebellar artery

18

Blood vessel that supplies the Majority of midbrain, portions of the thalamus, lateral and medial geniculate bodies, occipital lobe, inferior aspect of the temporal lobes, and the hippocampus

Posterior cerebral artery (PCA)

19

Blood vessel that supplies the Majority of the dura

Middle meningeal artery

20

Name the cerebral veins that drain directly into the superior sagittal sinus:

Bridging veins

21

Name the cerebral vein that drains deep cerebral veins into the straight sinus:

Vein of Galen

22

CN III, CN V1, CN V2, CN VI, postganglionic sympathetic fibers, and both internal carotid arteries all pass through which structure?

Cavernous sinus