Which glial cell forms tight sheaths around brain capillaries and helps form the blood-brain barrier?

A: Neuron

B: Oligodendrocyte

C: Astrocyte

D: Schwann cell

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation:

answer; synapse; i believe this is correct,plz check first good luck;