How To Use Tractile In A Sentence
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Maximum contractile and relaxant responses to the relevant antagonists were expressed as a percentage of the control maximum response.
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The morphology of the middle and distal phalanx in Tapocyon exhibits a retractile claw condition, supporting this as the primitive condition for Carnivora / Carnivoramorpha.
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Think of actin and myosin, the contractile proteins.
An Amazing Design Material
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Spores may be demonstrated by phase-contrast microscopy of wet mounts, where they appear mature and retractile.
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The contractile vacuole is terminal, the proboscis is short, slightly raised and separated from the body by a deep cleft; the buccal cilia are inserted part way up on the proboscis.
Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901
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Like the latter, there is one caudal bristle, but unlike it there is only one posterior contractile vacuole, while the endoplasm is filled with large granules or food balls.
Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901
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Locomotor skeletal muscle protein synthesis is sensitive to contractile activity and rapidly decreases within the first hours of reduced use.
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She spoke at length about its complex system of color-nodes, its powerful contractile capacity.
MAJIPOOR CHRONICLES
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The feeding zooids use retractile tentacles, called the lophophore, to filter feed and have a U-shaped gut for digestion.
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The contractile vacuole is subterminal and dorsal; it is questionable whether there are canals leading to it.
Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901
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Legs are short and sturdy, with five toes on each foot, and claws that are strong, curved and semi-retractile.
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Trap termites using their long protractile tongues, which are covered with a thick, sticky saliva.
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The last four segments, of decreasing breadth, are retractile beneath the carapax, as is also the broad plume that terminates them, and which is formed of three short, transparent, and elegantly ciliated bristles.
Scientific American Supplement, No. 385, May 19, 1883
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To aid in modeling cell-driven contraction, a contractile unit was generally defined as a set of applied loads which sum to zero and produce zero net torque.
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The body is globular with but slight differentiation into ectoplasm and endoplasm; one nucleus in the latter; contractile vacuoles one or many; pseudopodia on all sides, thin, and with peripheral granule-streaming; surrounded by a globular, rather thick coat of jelly, which is hyaline inside and granular on the periphery.
Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901
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They relied on contractile force to move medium-heavy poundage.
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The euglenas main way of transporting itself is by swimming, the flagellum is mad up of of four part known as contractile fibrils, it uses these four fibrils to bend back and forth moving the creature along.
CreationWiki - Recent changes [en]
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The first paper is about immune cells in sea urchins and concludes that "the acto-myosin contractile mechanism contributes to the dynamics of constitutive cell surface membrane blebbing in invertebrate immune cells.
ScienceBlogs Channel : Life Science
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The habit of felids to use primarily their forelimbs to capture prey is supported by the anatomy and function of their retractile claws.
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cats have retractile claws
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The onset of contractile activity involves activating troponin, the second accessory protein of thin filaments.
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Ryanodine has complex effects on muscle contractile activity; it was reported to depress twitch and tetanic tension, and to induce a slowly developing contracture.
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The euglenas main way of transporting itself is by swimming, the flagellum is mad up of of four part known as contractile fibrils, it uses these four fibrils to bend back and forth moving the creature to wherever it needs to go.
CreationWiki - Recent changes [en]
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Like scaphopods, bivalves have a retractile foot which they use to burrow.
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The theory of evolution offers a framework for understanding how terrestrial life has evolved sensory mechanisms for transducing various types of energy from the environment, such as light, heat, and mechanical energy, into electrical and chemical signals that ultimately guide physical behavior by, to summarize tersely, impacting on contractile elements in cells that, consuming chemical energy ultiamtely derived from solar energy, produce mechanical energy that results in motor movement.
"War of the Weasels" article in new Skeptical Inquirer - The Panda's Thumb
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If a testis is not palpable, it is important to determine if it is retractile, ectopic, or cryptorchid.
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Rather than allowing the one contractile filament in their model to contract at will, they built into it a property which is common in certain kinds of muscle fibre: when stretched beyond a certain critical length, the fibre would respond by contracting to a much shorter length than the normal equilibrium length.
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Isolated perfused hearts were used to study the effects of a decreased oxygen concentration in the perfusate on contractile performance (RPP) and phosphocreatine (PCr) concentration
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In cross section, skeletal muscle fibers are seen to be composed of numerous small aggregates of contractile substance, the myofibrils.
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When myosin is activated, the contractile filaments slide apart and the muscle cell relaxes.
Physiology or Medicine for 1998 - Animation
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Haversian system: this is another way to describe an osteon 21. intercalated disc: an irregular transverse thickening of the cardiac muscle cell membrane containing both desmosomes and gap junctions 22. lacuna: a small, hollow space in cartilage or bone tissue in which living cells are found 23. leukocyte: a white blood cell 24. mesothelium: the layer of simple squamous epithelium that lines the serous membranes of the thoracic and abdominopelvic cavities and covers the organs within them 25. microvilli: the microscopic, fingerlike projections of a cell's plasma membrane that increase the surface area available for absorption 26. muscle fiber: an elongated contractile cell that forms the muscles of the body 27. neuroglia: a cell of the nervous system that protects and supports neurons
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We explore the impact of rheology on actin-dependent cytoplasmic contraction, and find that although microtubules modulate contractile forces in vitro, their interactions are not purely mechanical.
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However, as with bronchial smooth muscle hypertrophy, it can be expected that the remodeled vessels may exhibit altered reactivity to contractile or relaxant agents.
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protractile muscle
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Smooth muscle fibers usually contract slowly but are capable of sustained contractile activity.
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She spoke at length about its complex system of color-nodes, its powerful contractile capacity.
MAJIPOOR CHRONICLES
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Arrhythmia develops in association with damaged cardiac contractile elements and diminished coronary flow.
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The authors describe how the romantic poets saw the heart's beating as the "fountain of life" and note how Harvey's famous book on the heart emphasized in its very title, "De Motu Cordis," the contractile motions that are a key to its function.
Matters Of the Heart
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Gradually, new sarcomeres (contractile units) are laid down to share the work load and reduce the wall stress.
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Diptera; see empodium: a more or less retractile process on the feet of some beetles: in Hymenoptera, the apical tarsal joint bearing the claws: see also arolium and pulvillus.
Explanation of Terms Used in Entomology
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The protoplasm is more or less extensively excavated by fluid spaces, vacuoles; one clearer circular space or vacuole, which is invariably present, appears at intervals, enlarges gradually, and then vanishes abruptly, to reappear after a brief interval; this is called the contractile vacuole (c.v.).
Text Book of Biology, Part 1: Vertebrata
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Actin and other contractile proteins within the pseudopods of platelets produce platelet retraction that prevents further blood loss and facilitates healing.
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Ponyfish have a very protractile mouth, a phenomenon which can be demonstrated by squeezing the head, when the mouth will shoot forward.
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Ciliates have permanent contractile vacuole pathways and pores where amoebas will release them from any point along the surface of its body.
Protozoa
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Now if the student will compare Section 35, he will see that in the white blood corpuscles we have a very remarkable resemblance to the amoeba; the contractile vacuole is absent, but we have the protoplasmic body, the nucleus and nucleolus, and those creeping fluctuations of shape through the thrusting out and withdrawal of pseudopodia, which constitute "amoeboid" motion.
Text Book of Biology, Part 1: Vertebrata
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On one hand, angiosperm cells lack centrosomes as microtubule organizing centres and are missing the contractile ring which serves as a tool for cytokinesis in animal cells.
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In Australia, for example, marsupial herbivores the size of a rhinoceros, kangaroos nearly 10 feet tall, and carnivorous lion-like forms with shearing teeth and retractile claws all roamed the landscape.
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the contractile wings of an insect
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The contractile activity in the distal esophagus was normal with propagating contractions of appropriate amplitude and duration.
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In blennies the palatines are toothless, and the mouth not protractile.
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Cajal, on the other hand, believes that the neuroglia cells are contractile, and may expand so as to interpose their branches as insulating material between the synapses formed by the dendrites of the nerve cells.
Scientific American Supplement, No. 1178, June 25, 1898
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Several SNPs in PTGER3 were significant in the combined MoBa and Cenn maternal samples, supporting the role of variation in this contractile agent in the final effecter pathway and PTB.
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Oster and his colleagues tried the experiment, on their computer model, of lowering the ‘firing threshold’ of the contractile filaments.
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The fact that similar step sizes are found in independent experimental approaches using different methodologies implies that the quantal stepping mechanism is a central feature of the contractile process.
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In the case of taxol-stabilized extracts, we measure little difference in network rheology as compared to the untreated gels, yet observe striking differences in their contractile behavior.
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The protoplasm is more or less extensively excavated by fluid spaces, vacuoles; one clearer circular space or vacuole, which is invariably present, appears at intervals, enlarges gradually, and then vanishes abruptly, to reappear after a brief interval; this is called the contractile vacuole (c.v.).
Text Book of Biology, Part 1: Vertebrata
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To counter this, water is secreted into a contractile vacuole as fast as it enters the amoeba.
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In our studies, fibroblast contractile machinery was observed to function entirely within pseudopods, while GFP-alpha-actinin concentrated in pseudopod tips and cortex.
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Inside the fibre are the myofibrils, which constitute the contractile apparatus, and a system for controlling the myofibrils through changes in calcium concentration.
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At this point, the efficiency of contraction decreases and contractile failure ensues.
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It is increased in failing human hearts and contributes to the loss of the heart's contractile strength during the development of heart failure.
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Therefore, we used Western analysis to determine the relative contents of these contractile proteins in whole lung homogenates.
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If you just find a way to rev up those contractile fibers for the muscle, then everything else from human biology and gait would allow us to be that fast," said physiologist Peter Weyand of Southern Methodist University, lead author of a study published Jan. 21 in the
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A similar pattern of contractile and relaxant responses was seen in the pulmonary veins.
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The same is true for pinocytosis (the "drinking" of organic substances) and the release of wastes that are contained in contractile vacuoles.
Protozoa
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All of the contractile and relaxant responses evoked by these stimuli were absent in vagotomized animals or in animals pretreated with the ganglionic blocker, trimethaphan, confirming their reflex and parasympathetic nature.
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Wrasses characteristically have a protractile mouth, cycloid scales, and a single continuous dorsal fin lacking an obvious notch between the soft and spiny portions.
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Here we present a more detailed analysis of contractile force generation in a cell that lacks cytoskeletal protein motors.
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The contractile vacuole is terminal or subterminal and near the anal opening.
Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901
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Methods Rat gastric muscle strips was suspend in tissue chambers, it ? ? s contractile activity was recorded.
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Drug therapy with a derivative of digitalis called digoxin Lanoxin will stimulate the contractile ability of the heart.
Healing the Female Heart
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This behavior is consistent with the idea that a small amount of rigorlike, stereospecific actomyosin complexes are formed as a result of normal contractile activity.
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The feeding zooids use retractile tentacles, called the lophophore, to filter feed and have a U-shaped gut for digestion.
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The decrease in the magnitude of the contractile responses to neurotransmitter and gut hormone with no change in the sensitivity to them in diabetes mellitus can led to the gallbladder hypomotility.
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The contractile activity of involuntary muscle is normally regulated by the autonomic (sympathetic and parasympathetic) nervous system.
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One can conclude from this and from many other analogous facts that, when appreciable capillary dilation occurs, it cannot be because of a simple rise in arterial blood pressure but must depend on change in condition of the capillary walls - a relaxation of their contractile elements.
August Krogh - Nobel Lecture
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Briefly, the cardiac myofibrils are composed of the major contractile proteins, actin and myosin.
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Good correlation exists between findings in vitro and the observed contractile properties in vivo.
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Indeed, although heart can stand some degree of hypoxia, this situation is incompatible with its normal bioenergetic function, and ischemic heart disease with compromised oxygen supply to the myocardium is a common cause of heart failure This idea is clearly illustrated in the present study by the concomitant severe decrease in contractile activity and PCr concentration measured in Control hearts perfused under low oxygen conditions compared with previously reported values
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We showed that the positive inotropic effects of norepinephrine and strophanthin-K were correlated with an increase in rate of exchange of calcium in an intracellular pool associated with the contractile process and that the negative inotropic effects of acetylcholine and adenosine were correlated with a decrease in rate of exchange in that pool.
Robert F. Furchgott - Autobiography
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Like scaphopods, bivalves have a retractile foot which they use to burrow.
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Smooth muscle cells possess a contractile apparatus consisting of actin and myosin filaments and the cytoskeleton.
