kim practice

In which of the following region is CSF not found?

A. Choroid plexus

B. Arachnoidal villi

C. Brain capillaries

D. Brain parenchyma

Brain capillaries

_________ can lead to communicating type of hydrocephalus.

A. Congenital aqueductal stenosis

B. Subaranchoid hemorrhage

C. Tumor in the 4th ventricle outlet

D. Colloid cyst (anterior of the 3rd ventricle)

Subaranchoid hemorrhage

_______ is transported first from blood to ventricle during CSF production?

A. Sodium ion

B. Chloride ion

C. Potassium ion

D. Bicarbonate ion

Sodium ion

Which of the following is a regulating factor of blood flow?

A. Arterial blood [CO2]

B. Astrocyte stimulation of excitatory neuron

C. PO2 in brain parenchyma

D. All of the above

All of the above

Tight-junctioned capillaries penetrate into the brain tissue (parenchyma) from ______.

A. Circle of Willis

B. Subaranchoidal space

C. Internal carotid artery

D. Choroid plexus

Subaranchoidal space

Which of the following is FALSE?

A. Brain takes up 2% of the body weight

B. Blood flow to the brain is about a third of the cardiac output

C. Metabolic rate per unit mass in the brain is 7.5X greater than in non-nervous system

D. Autoregulation of cerebral blood flow in normal person operates between 60 and 150 mm Hg

Blood flow to the brain is about a third of the cardiac output

In hypertensive person, cerebral vasculature is reconditioned to shift

autoregulation of cerebral blood flow towards ________.

A. Higher blood pressure

B. Lower blood pressure

Higher blood pressure

Brain edema differs from hydrocephalus based on ________.

A. Location of CSF build-up

B. Amount of CSF build-up

C. Composition of CSF build-up

D. Rate of CSF production

Location of CSF build-up

Which of the following is FALSE regarding strategies to overcome BBB?

A. Focused ultrasound allows transient opening of BBB

B. Dopamine can cross BBB bidirectionally via LAT1

C. Microbubble produces physical disturbance of BBB via cavitation

D. L-DOPA is a prodrug of dopamine

Dopamine can cross BBB bidirectionally via LAT1