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SP14 - Human Anatomy Exam 1 > Neuro - Gross Brain > Flashcards

Flashcards in Neuro - Gross Brain Deck (14):
1

List the 3 meninges.

- dura mater
- arachnoid
- pia mater

2

List and describe the 2 clinically significant potential meningeal spaces.

- epidural space - potential space between the skull and dura mater
- subdural space - potential space between the dura mater and the arachnoid

**subarachnoid space is an actual space, not a potential space (?)

3

What is an epidural hematoma?

result of blood entering the epidural space; often the result of damage to the middle meningeal artery; the expanding hematoma puts pressure on the brain

4

What is a subdural hematoma?

result of blood entering the subdural space; often the result of damage to small veins that cross from the brain to the venous sinuses; the expanding hematoma puts pressure on the brain

5

What is the major blood supply to the dura over the parietal lobe?

the middle meningeal artery and its branches (?)

6

What is the rostral extent of the subarachnoid space along the optic nerve? How is this clinically significant?

meninges cover the optic nerve so the subarachnoid space extends along the optic nerve to the back of the eye; an abnormal increase in CSF pressure (hydrocephalus) is reflected by changes in the optic papilla (choked disk; papilledema)

7

What is the falx cerebri and what does it separate?

- it is a reflection of dura mater
- extends ventrally in the sagittal plane from the skull to the corpus callosum and separates the cerebral hemispheres; the superior sagittal sinus occupies the upper edge of the falx

8

What is the tentorium cerebelli and what does it separate?

- it is a reflection of dura mater
- lies horizontally to separate the cerebellum below from the occipital lobe above; tentorium extends around the brainstem; the opening created by the brainstem is called the tentorial incisure (notch) and is occupied by the midbrain

9

What occupies the supratentorial compartment? The infratentorial compartment?

- supratentorial compartment - cerebrum
- infratentorial compartment - cerebellum

10

What is the origin, course, and point of resorption of cerebrospinal fluid?

- cerebrospinal fluid (CSF) is produced by vascular tufts located in the lateral, third, and fourth ventricles
- CSF exits the ventricular system into the subarachnoid space
- CSF is reabsorbed into the superior sagittal siinus through the arachnoid granulations

11

Name the vessels involved in the posterior (vertebral-basilar) blood supply of the brain.

- posterior inferior cerebellar artery
- anterior inferior cerebellar artery
- superior cerebellar artery
- posterior cerebral artery

12

Name the vessels involved in the anterior (internal carotid) blood supply of the brain.

- anterior cerebral artery (with the anterior communicating artery)
- middle cerebral artery (with ophthalmic artery)
- posterior communicating artery (connects ICA with posterior cerebral artery)

13

Name the vessels of the cerebral arterial circle (of Willis).

- anterior cerebral artery
- anterior communicating artery
- middle cerebral artery
- internal carotid artery
- posterior communicating artery
- posterior cerebral artery
- superior cerebellar artery
- basilar artery
- anterior inferior cerebellar artery
- posterior inferior cerebellar artery
- vertebral artery
- anterior spinal artery

14

Name the 3 major vessels that supply the cerebral cortex.

- anterior cerebral artery
- middle cerebral artery
- posterior cerebral artery