Blood Supply and Cerebrospinal Fluid System

Which of the following is(are) the function(s) of the cerebrospinal fluid (CSF) system?

• To provide water and certain amino acids to the extracellular fluid

• To supply specific ions to the extracellular fluid

• To provide buoyancy to the brain

• all of the above

What structure is above the body of the lateral ventricle?

• Thalamus

• Hypothalamus

• Caudate

• Corpus callosum

• Lenticular nucleus

Where is CSF normally found?

• In the subarachnoid space

• Between the dura and the skull

• In the subdural space

• Between the pia mater and the brain

Vertebrobasilar artery ischemia is associated with:

• Diplopia

• Ataxia

• Weakness

• Oropharyngeal dysfunction

• all of the above

Lacunar infarctions:

• Are due to hemorrhage

• Typically result in severe residual disability.

• Produce small avascular cavities in the brain.

• Are a form of TIAs.

• Occur most often in the anterior cerebral artery.

Partial occlusion of the basilar artery may cause:

• Tetraplegia

• Loss of sensation

• Coma

• Cranial nerve signs

• all of the above

Acute cerebellar infarction typically produces which of the following?

• Dizziness and/or vertigo with a lack of balance

• Nausea and vomiting, dysarthria, and headache

• Receptive aphasia

• Dizziness and/or vertigo with a lack of balance & Nausea and vomiting, dysarthria, and headache

Which of the following stimulate vasoconstriction of the cerebral arteries?

• Low blood pressure

• Low pH levels (acidic)

• Low oxygen (O₂) concentrations

• Low carbon dioxide (CO₂) concentrations

Which of the following events occurs with prolonged cerebral edema?

• Fluid leakage from damaged capillaries

• Arterial dilation with increased capillary pressures

• Lack of blood flow and O₂ delivery

• All of the above

Occlusion of the middle cerebral artery and ischemia of the inferior parietofrontal lobes of the right hemisphere may result in which of the following?

• Impaired nonverbal communication

• Apraxia

• Hemispatial and hemipersonal neglect

• All of the above