Examlex
The Cambrian explosion occurred primarily in the oceans.Which of the following were the first challenges that had to be overcome during the mass colonization of dry land in the Ordovician period?
Tissue Plasminogen Activator
An enzyme that helps dissolve blood clots, often used in treating strokes and heart attacks.
Ischemic Stroke
A type of stroke caused by an obstruction within a blood vessel supplying blood to the brain.
Reticular Formation
A complex network of nerve pathways in the central nervous system that plays a key role in controlling arousal, wakefulness, and transitions between sleep and wakefulness.
Gray Matter
The regions of the brain and spinal cord that are made up primarily of neuronal cell bodies and synapses, crucial for processing and integrating information.
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