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 21 ptsWhich of the following statements is CORRECT regarding the blood-brain barrier?Group of answer choicesmicroglial cells help the endothelial cells to form the blood-brain barrierpericytes form tight junctions between endothelial cells in blood vesselsbrain capillaries lack fenestrations and have high pinocytosistight junctions open and close to control the passage of material through the intercellular spacesthe vascular basement membrane contributes to the integrity of the blood-brain barrier

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

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

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

The blood-brain barrieruses chemical signals to communicate with the spinal cord.provides support to the brain tissue.tightly regulates the intracellular environment of the CNS.is formed by oligodendrocytes.filters the entry of solutes from the blood into the cerebrospinal fluid.SubmitRequest Answer