saltatory movement

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• saltatory — ˈ ̷ ̷ ̷ ̷ˌtōrē adjective Etymology: Latin saltatorius, from saltatus + orius ory 1. : of or relating to dancing the saltatory art 2. : characterized by movement in leaps and bounds saltatory thinking saltatory insects …   Useful english dictionary

• 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

• locomotion — /loh keuh moh sheuhn/, n. the act or power of moving from place to place. [1640 50; see LOCOMOTIVE, MOTION] * * * Any of various animal movements that result in progression from one place to another. Locomotion is classified as either… …   Universalium

• 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

• Evolution —     Evolution (History and Scientific Foundation)     † Catholic Encyclopedia ► Evolution (History and Scientific Foundation)     The world of organisms comprises a great system of individual forms generally classified according to structural… …   Catholic encyclopedia

• 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

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• mammal — mammallike, adj. /mam euhl/, n. any vertebrate of the class Mammalia, having the body more or less covered with hair, nourishing the young with milk from the mammary glands, and, with the exception of the egg laying monotremes, giving birth to… …   Universalium

• Membrane potential — Differences in concentration of ions on opposite sides of a cellular membrane lead to a voltage called the membrane potential. Many ions have a concentration gradient across the membrane, including potassium (K+), which is at a high inside and a… …   Wikipedia

• Chorea — Ceaseless rapid complex body movements that look well coordinated and purposeful but are, in fact, involuntary. Chorea was thought suggestive of a grotesque dance. The term chorea is derived from the Greek word choreia for dancing (as is… …   Medical dictionary