Select the correct answer from each drop-down menu. a neuron has three basic parts: the dendrites, the cell body, and the axons. some neurons have a fatty layer covering called around their axons. this layer isn’t continuous, and the gaps are called . the action potential jumps through these gaps to the transmission.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]