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30 Οκτ 2023 · The axon hillock refers to the triangular, cone-shaped region of a neuron cell body which serves as the origin from which the axon extends. The axon hillock helps to differentiate the axon from a dendrite of a neuron on microscopy.
The axon hillock is a specialized part of the cell body (or soma) of a neuron that connects to the axon. It can be identified using light microscopy from its appearance and location in a neuron and from its sparse distribution of Nissl substance .
12 Ιουν 2022 · 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.
21 Δεκ 2023 · The axon hillock refers to an anatomically and functionally distinct area of the cell body which serves as the origin of the axon. It is cone-shaped and devoid of large cytoplasmic organelles such as chromatophilic substance (Nissl bodies) and Golgi apparatus.
The electrical signal, or action potential, originates near the initial region of the axon called the axon hillock and conducts at 1–100 m/s (Kandel et al., 2000). In humans, an axon in the sciatic nerve can extend up to 1 m long (between the base of the spine and the big toe).
The axon hillock is the conical expansion of an axon at its point of attachment to the body of the nerve cell (Dorland, 2011). The initial segment of the axon arises from the axon hillock which is a pyramidal-shaped region of the cell body lacking ribosomes, endoplasmic reticulum, and the Golgi complex.
14 Νοε 2022 · Axon connects to the soma at a cone-like part of the structure known as the axon hillock. This part of the axon has considerable functional importance since action potential originates here. In other words, this region of the neurolemma processes the incoming signals from other neurons.
