Many types of specialized plasma membranes can separate cell from external environment: apical, basolateral, presynaptic and postsynaptic ones, membranes of flagella, cilia, microvillus, filopodia and lamellipodia, the sarcolemma of muscle cells, as well as specialized myelin and dendritic spine membranes of neurons.

Many neurons fit the foregoing schema in every respect, but there are also exceptions to most parts of it.

Many properties of neurons, from the type of neurotransmitters used to ion channel composition, are maintained across species, allowing scientists to study processes occurring in more complex organisms in much simpler experimental systems.

Many neurons extrude long thin filaments of protoplasm called axons, which may extend to distant parts of the body and are capable of rapidly carrying electrical signals, influencing the activity of other neurons, muscles, or glands at their termination points.

Many neurons in the rat and mouse hippocampus respond as place cells: that is, they fire bursts of action potentials when the animal passes through a specific part of its environment.

Many types of neurons emit action potentials constantly at rates of up to 10 – 100 per second ; some types, however, are much quieter, and may go for minutes or longer without emitting any action potentials.

Many vomeronasal neurons are activated by chemicals in urine.

Many patch-clamp recordings have confirmed the sensitivity of the vomeronasal neurons.

Many of the neurons in the nuclei ( but not the majority ) are serotonergic ; i. e., contain serotonin, a type of monoamine neurotransmitter.

Many neurons perform only a single function, therefore neurons that perform these functions in combination are given the classification " polymodal ".

Many more motor cortex neurons, however, extend fibers all the way down to the spinal cord ( corticospinal tract ).

Many PVN neurons project directly to the posterior pituitary where they release oxytocin or vasopressin into the general circulation.

Many SCN neurons are sensitive to light stimulation via the retina, and sustainedly firing action potentials during a light pulse (~ 30 seconds ) in rodents.

Many studies link mirror neurons to understanding goals and intentions.

Many researchers have pointed out that the " broken mirrors " theory of autism is overly simplistic, and mirror neurons alone cannot explain the deficits found in individuals with autism.

Many neurons are capable of releasing more than one neurotransmitter, in what is called " cotransmission ".

Many patients would benefit from a prosthetic device that controls limb movement via devices that read neurons in brain, calculate limb trajectory, and stimulate the needed motor pools to make movement.

Many dendrites of pyramidal neurons in deep layers branch and form connections in layer IV, while some extend to more superficial layers.

Many of them have drifted into the cities and towns and seaports.

Many years later I went to see S.K. in England, where he was living at Whiteleaf, near Aylesbury, and he showed me beside his cottage there the remains of the road on which Boadicea is supposed to have travelled.

Many readers of this department no doubt discount certain of my opinions for the simple reason that they can guess pretty accurately, even if they have never actually been told, what my age is.

Many styles have perforations and an almost weightlessness achieved via unlined leathers.

Many such loans have been made to establish small concerns or to aid in their growth, thereby contributing substantially to community development programs.

Many mills have already placed firm orders for this machine.

Many states have laws regulating the use of boat trailers and some have restrictions regarding the age of motor boat operators.

Many companies have upgraded their sales manpower and tested new selling, distribution, and promotion techniques to gain a bigger competitive edge.

Many companies have systems, particularly in R & D, which work more or less well, depending upon size and actual belief in the policy on the part of administration, as will be abundantly apparent in subsequent quotations.

Many of the men on our campus have a pretty set curriculum, especially in the various engineering fields, with few electives till the senior year.

Many of the suggested systems seem to have only the most tenuous relationship to the language structures that they purport to represent.

Many rate increases already have been put into effect.

Many years have passed since a Metropolitan audience heard anything comparable.

Many studies have observed the effects of volunteerism ( as a form of altruism ) on happiness and health and have consistently found a strong connection between volunteerism and current and future health and well-being.

Many of them also have infixes.

Many aquatic salamanders and all tadpoles have gills in their larval stage, with some ( such as the axolotl ) retaining gills as aquatic adults.

Many songs have used this term, including the American patriotic songs " America, The Beautiful " and " God Bless the USA ".

Many amateurs are beginners or hobbyists, while others have a high degree of experience in astronomy and often assist and work alongside professional astronomers.

Many definitions of art have been proposed by philosophers and others who have characterized art in terms of mimesis, expression, communication of emotion, or other values.

Many of the recent TV Games series of old Atari games have included either the 2600 or arcade versions of Asteroids.

Many species in the iris family have a great economic importance in ornamental horticulture and the cut flower industry, especially Gladiolus, Freesia, Sparaxis, Iris, Tigridia ( tiger lily ), Ixia ( corn lily ), Romulea, Neomarica, Moraea ( butterfly lily ), Nemastylis, Belamcanda, Sisyrinchium ( blue-eyed grass ), Crocosmia and Trimezia.

Many species have an erect woody stem which is covered with persistent dried leaves unless there have been fires, topped by a crown of long thin leaves.

Many of my friends at the time thought that I had received a well-deserved condemnation when Lincoln Steffens denounced me in a review of one of my books as a perfect example of the obsolete man who could understand and sympathize only with the dead past.

Many people think that pansies last only a few weeks, then their period of growth and bloom is over.

Many a student was able to remain at Spelman, only because of her unobtrusive help.

Many people seem to be following a similar strategy by cooperating if and only if others cooperate in return.

Many desert annuals are therophytes, because their seed-to-seed life cycle is only weeks and they spend most of the year as seeds to survive dry conditions.

Many stars visible to the naked eye have such a low absolute magnitude that they would appear bright enough to cast shadows if they were only 10 parsecs from the Earth: Rigel (− 7. 0 ), Deneb (− 7. 2 ), Naos (− 6. 0 ), and Betelgeuse (− 5. 6 ).

Many states have Arbor Day although only Victoria has Arbor Week, which was suggested by Premier Dick Hamer in the 1980s.

Many believers in the Bible hold that only one of these families is trustworthy as transmitting the Word of God.

Many militias and irregular forces adapt civilian vehicles into AFVs ( armored fighting vehicles ) and troop carriers, and in some regional conflicts these " technicals " are the only combat vehicles present.

Many pathways and signals lead to apoptosis, but there is only one mechanism that actually causes the death of a cell.

Many observers claimed to have determined such parallaxes, but Tycho Brahe and Giovanni Battista Riccioli concluded that they existed only in the minds of the observers, and were due to instrumental and personal errors.

Many experts consider these drugs obsolete for treating anxiety but valuable for the short-term treatment of severe insomnia, though only after benzodiazepines or non-benzodiazepines have failed.

Many Aleuts now live across the state and not only in the Aleutians which has helped to spread the arts of their people and to better develop methods of creating their arts.

Many copies were mistakenly put on store shelves on the scheduled release date, only to be immediately recalled.

Many ships had only jury masts and it took a full day for the convoy to reach the mouth of the bay, finally sailing into open water on 15 August.

Many bees are opportunistic foragers, and will gather pollen from a variety of plants, while others are oligolectic, gathering pollen from only one or a few types of plant.

Many Boers had German ancestry and many members of the government were themselves former Boer military leaders who had fought with the Maritz rebels against the British in the Second Boer War, which had ended only twelve years earlier.

* Country collections: Many enthusiasts focus their collection on only a single country — often their own.

Many important routes are not electrified and are only single track traffic around ' bends '.

Many philosophers consider experience to be the essence of consciousness, and believe that experience can only fully be known from the inside, subjectively.

Many ciphers are based on publicly known algorithms or are open source, and so it is only the difficulty of obtaining the key that determines security of the system, provided that there is no analytic attack ( i. e., a ' structural weakness ' in the algorithms or protocols used ), and assuming that the key is not otherwise available ( such as via theft, extortion, or compromise of computer systems ).

Many Christians have believed that Jesus ' doctrine of peace speaks only to personal ethics and is distinct from civil government's duty to punish crime.

Many worms that have been created are designed only to spread, and don't attempt to change the systems they pass through.

Many are visited by tourists, some are visited only by archaeologists and biologists.