1. Which of the following statements about cell junctions is correct?
(1) Tight junctions are found in both intestinal epithelial cells and vascular endothelial cells of the blood-brain barrier.
(2) Desmosomes provide cytoplasmic channels and can be found in muscle fibers.
(3) Gap junctions are essential for intercellular communication and are found in cardiac muscle.
(A) (2)
(B) (1), (2)
(C) (2), (3)
(D) (1), (3)
(E) (1), (2), (3)
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統計: A(0), B(0), C(1), D(3), E(0) #3853306
統計: A(0), B(0), C(1), D(3), E(0) #3853306