Problem:
Question 1: Describe the composition and function of the blood brain barrier (BBB). Include which types of cells are forming the barrier, what structures or actions are essential to form the barriers, and give specific examples of its limited permeability. Explain the homeostatic purpose of the BBB and how, despite the BBB, the brain tissues obtain required nutrients.
Question 2: Explain how a hemorrhagic stroke affects the BBB and the effects this could have on the cerebrospinal fluid?
Please Explain don't just write the answer.