1.( ) The axons of some neurons are surrounded by a fatty substance called myelin.
These myelinated axons
(A) can send a neural impulse in both directions within one neuron.
(B) can transmit information, but cannot receive it.
(C) transmit information more quickly than do unmyelinated axons.
(D) function no differently than unmyelinated axons.
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統計: A(2), B(1), C(4), D(0), E(0) #3057001
統計: A(2), B(1), C(4), D(0), E(0) #3057001
詳解 (共 1 筆)
#6298960
答案(C)
髓鞘(myelin)是一種脂肪物質,包覆在某些神經元的軸突外,形成髓鞘化的軸突。髓鞘可以增加神經衝動傳導的速度,就像電線的絕緣層一樣。
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