Group C nerve fibers- unlike type A and B axons, type C axons are unmyelinatedĪxons conduct a specific type of electric impulse, known as the action potential.However, some axons may be unmyelinated as well.ĭepending upon the myelination of the nerve fibers, they can be classified into three types: These axons are referred to as myelinated axons. Presence of neurofibrils as well as Nissl’s granulesĪxons carry the signals away from the neuronal cell bodyĭendrites carry the signals towards the neuronal cell bodyĪxon location- between neuronal cell body or soma and the axon terminalĭendrites location- multiple projections throughout the periphery of the neuronal cell body or soma.Īxons are generally covered with a myelin sheath in order to preserve the signal during its transmission to different parts of the body. Neurofibrils form the cytoskeletal structure of the axon. The tapering ends in dendrites Absence of synaptic knobs Terminal ends of the axons form synaptic knobs Relatively, axon are long ~sevral meter in lengthĪxons possess a uniform thickness throughout their length, and the branching occurs only terminallyĪ highly branched structure that can be seen throughout its length Dendritesĭendrites transmit the inbound or the incoming signals Let’s understand the difference between axons and dendrites (Table 1) Table 1: Axon vs. Medicine definition: Axon hillock is an axon nerve fiber that is a long projection of a neuron that carries the outbound neuronal cell signals as opposed to dendrites, which are the short protrusions from the neuronal cell body that brings in the inbound signals to the neuron.Įtymology: “axon”, from Greek “áxōn”, meaning “axle” or “axis” hillock, from Middle English “hillok”, “hil”, meaning “hill”. Anatomy definition: Axon hillock is the neuronal projection that transmits the neuronal signals from the neuronal cell body to different body cells ( Note: axons carry outward-bound signals) while the dendrites are the root-like projections that receive the signals from the other cells of the body and relay them to the nervous system ( Note: dendrites carry inward-bound signals).
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