- unmyelinated axon
- naked a.
Medical dictionary. 2011.
Medical dictionary. 2011.
Axon — For other uses, see Axon (disambiguation). Structure of a typical neuron Axon … Wikipedia
Squid giant axon — The squid giant axon is the very large (up to 1 mm in diameter; typically around 0.5 mm) axon that controls part of the water jet propulsion system in squid. Squid use this system primarily for making brief but very fast movements through the… … Wikipedia
Mesaxon — In neurobiology, a mesaxon is a pair of parallel plasma membranes of a Schwann cell, marking the point of edge to edge contact by the Schwann cell encircling the axon. A single Schwann cell of the peripheral nervous system will wrap around and… … Wikipedia
Nerve net — For the album by Brian Eno, see Nerve Net (album). Nettle Jelly A nerve net is a type of simple nervous system that is found in members of the cnidaria, ctenophora, and echinodermata phyla. Nerve nets consist of interconnected neurons lacking a… … Wikipedia
Shaken baby syndrome — Classification and external resources ICD 9 995.55 MedlinePlus 000004 … Wikipedia
Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… … Wikipedia
nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… … Universalium
Fiber — The parts of plants that cannot be digested, namely complex carbohydrates. Also known as bulk or roughage. Complex carbohydrates from plants are rich in starch and fiber. Examples of plants that provide complex carbohydrates (fiber) are fresh… … Medical dictionary
Myelin sheath gap — Drawing of a peripheral nerve axon (labeled axis cylinder ), showing a node of Ranvier along with other features … Wikipedia
Nodes of Ranvier — are known as the gaps (about 1 micrometer in diameter) formed between myelin sheath cells along axons or nerve fibers. OverviewSeveral vertebrate axons are surrounded by a myelin sheath allowing rapid and efficient saltatory propagation of action … Wikipedia