From the list below, select three types of molecules that are permeable to the blood-brain barrier without requiring a transport protein.Check All That ApplyGlucoseGlucoseLarge proteinsLarge proteinsOxygenOxygenNicotineNicotineEthanolEthanolPolar moleculesPolar molecules

Which of the following components is the most important contributor to the barrier properties of the blood-brain barrier?Group of answer choicesbinding proteins in the bloodpericytes around blood vesselsastrocyte end-feet encircling blood vesselstight junctions between endothelial cells in blood vesselsthe presence of transporters for some substances in endothelial cells of blood vessels PreviousNext

Question 31 ptsWhich of the following statements is CORRECT regarding the permeability of the blood-brain barrier to certain substances?Group of answer choicessmall uncharged molecules can hardly diffuse into the brain across the blood-brain barrierthe blood-brain barrier permits the efficient exchange of CO2 (carbon dioxide)charged molecules can diffuse through the blood-brain barrier easilylarge charged molecules can diffuse through the blood-brain barrierlipid-soluble molecules are usually less permeable than water-soluble molecules through the blood-

The membranes of the blood-brain barrier need to be fused, preventing any substances from entering and/or escaping between cells. The type of intercellular junction best suited for this need is a(n) __________Blank.Multiple Choicegap junctionion channeldesmosometight junction

Which type of glial cells, together with brain capillaries, are responsible for maintaining the blood-brain barrier?Multiple choice question.OligodendrocytesAstrocytesMicrogliaEpendymal cells

The ______cells play a role in the establishment of a blood-brainchemical barrier.Group of answer choices