17. Cornea transplant in humans is almost never rejected. This is because(A) it is composed of enucleated cells(B) it is a non living layer(C) it has no blood supply(D) its cells are least penetrable by bacteria

18. During the propagate ion of a nerve ion of a nerve impulse, the action potential results from the movement of(A) K⁺ ions from intracellular fluid to extracellular fluid(B) K⁺ ios from extracellular fluid to intracellular fluid(C) Na⁺ ions from extracellular fluid to intracellular fluid(D) Na⁺ ions from intracellular fluid to extracellular fluid

17. Cornea transplant in humans is almost never rejected. This is because

(A) it is composed of enucleated cells

(B) it is a non living layer

(C) it has no blood supply

(D) its cells are least penetrable by bacteria

相關試題

相關試卷