Which Structures Create the Blood Brain Barrier (BBB)

question 35

Multiple Choice

Which structures create the blood brain barrier (BBB) ?

• A) Gap junctions between endothelial cells that form the capillary walls
• B) Tight junctions between endothelial cells that form the capillary walls
• C) Gap and tight junctions between astrocytes and endothelial cells that form the capillary walls
• D) Desmosomes and tight junctions between astrocytes and ependymal cells that form the capillary walls
• E) Gap junctions between ependymal cells and endothelial cells that form the capillary walls

Assess the impact of genome size variations and the factors contributing to it across different organisms.

Understand the concept of gene duplication and its role in evolutionary divergence.

Identify and explain the mechanisms of lateral gene transfer and biased gene conversion.

Analyze and interpret the impacts of natural and artificial selection in gene evolution and pharmaceutical prospecting.

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Definitions:

Attention Difficulties

Challenges in maintaining focus on tasks or activities, often indicative of attention disorders like ADHD.

Glial Cells

Non-neuronal cells in the central and peripheral nervous systems that support, protect, and nourish neurons.

Brain Development

The process involving growth and change in the brain's structure, function, and capabilities, occurring throughout life but most significantly during childhood.

Synaptic Pruning

A natural process that occurs in the brain, especially during childhood and puberty, where the connections between neurons (synapses) are reduced to increase the efficiency of neurotransmission.