Which functional area of the brain is responsible for keeping the cortex alert and conscious and enhancing its excitability?
a. frontal eye fields.
b. reticular activating system.
c. broca's area.
d. limbic system.

The correct answer is b. reticular activating system.

Explanation:

The reticular activating system is located before the hypothalamus and mainly controls the activation of the awakening system and the day/night oscillations. Therefore, it's responsible for the consciousness states when sleeping.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.v