Understanding Neurons, Blood-Brain Barrier, and Stroke Effects

What is the initial consequence of a stroke due to oxygen deprivation?

• Neurons begin to break down

• Blood flow increases

• Neurons start to regenerate

• Blood vessels expand

What is the primary function of the blood-brain barrier?

• To enhance neuron activity

• To separate the bloodstream from the central nervous system

• To promote the growth of brain cells

• To increase blood flow to the brain

Which component of the blood-brain barrier provides nourishment to endothelial cells?

• Basal lamina

• Tight junctions

• Astrocyte endfeet

• Neurons

What happens to the blood-brain barrier a few hours after a stroke?

• It becomes stronger

• It starts to break down

• It remains unchanged

• It regenerates

What is vasogenic edema?

• Swelling caused by increased oxygen

• Swelling originating from blood vessels

• Swelling due to neuron regeneration

• Swelling due to decreased blood flow

What is a potential severe consequence of brain swelling?

• Increased neuron activity

• Brain herniation

• Improved blood circulation

• Enhanced cognitive function

What is the term for the brain swelling that displaces surrounding tissue?

• Cerebral expansion

• Tissue compression

• Mass effect

• Neuronal shift

How long does it take for brain swelling to peak after a stroke?

• 9-11 days

• 6-8 days

• 3-5 days

• 1-2 days

What happens to the proteins and water in the brain after swelling peaks?

• They form new cells

• They remain in the brain

• They are reabsorbed into circulation

• They evaporate

What is the outcome of the reabsorption of proteins and water post-stroke?

• Enhanced neuron breakdown

• Reduced cerebral swelling

• Permanent brain damage

• Increased brain swelling