Anterior definition biology

anterior definition biology

Chiasmatypy the formation of chiasma, the basis for crossing over or the interchange of corresponding chromatid segments of homologous chromosomes with their linked genes. The study of organisms, especially their migrations and distribution. — chorologic, chorological, adj. Commensalism the living together of two organisms in a relationship that is beneficial to one and has no effect on the other. Consortism a relationship of mutual dependency between two living organisms. Crustaceology the study of crustaceans. A state in which the signs of life of an organism have weakened to the point where they are barely measurable or no longer measurable. Ctetology the branch of biology that studies the origin and development of acquired characteristics.

Biophysiology the branch of zonnebrand biology that studies the growth, morphology, and physiology of organs. Bioscience any of the sciences that deal with living organisms. Biosphere that part of the earth where most forms of life exist, specifically, where there is water or atmosphere. Biosynthesis the formation of chemical compounds by living organisms, either by synthesis or degradation. Biosystematy, biosystematics the science of the classification of living things. — biosystematic, biosystematical, adj. Biotypology the science or study veldhoven of biotypes, or organisms sharing the same hereditary characteristics. — biotypologic, biotypological, adj. Cataplasia degeneration of cells or tissues. Cetology the study of whales. Chemotropism growth or motion in response to a chemical stimulus.

anterior definition biology
distribution of animals and plants. Biologism a theory or doctrine based on a biological viewpoint. Bioluminescence the property of some organisms, as fireflies, of producing light. The calculation of the probable extent of human lifespans. The application to biology of mathematical and statistical theory and methods. — biometric, biometrical, adj. — bionomic, bionomical, adj.
anterior definition biology

Biology - definition of biology by The Free dictionary

— anisogamous, anisogamic, adj. Apomixis any of several processes zonen of asexual reproduction. The central part of an aster, containing the centrosome. The whole aster excluding the centrosome. Autecology the branch of ecology that studies the relation of an organism to its environment. Auxanography the branch of microbiology that studies the rate of growth or inhibition exhibited by individual organisms in various plateculture media. Auxesis growth, especially owing to an increase in cell size. Biodegradability the capacity of some substances to decompose readily by biological process.

Biology, dictionary - f

Celiac disease a malabsorption syndrome precipitated by ingestion of gluten-containing foods, with loss of villous structure of the proximal intestinal mucosa, bulky, frothy diarrhea, abdominal distention, flatulence, weight loss, and vitamin and electrolyte depletion. Chagas disease trypanosomiasis due to Trypanosoma cruzi ; its course may be acute, subacute, or chronic. Charcot-Marie-tooth disease muscular atrophy of variable inheritance, beginning in the muscles supplied by the peroneal nerves and progressing to those of the hands and arms. Cholesteryl ester storage disease (cesd) a lysosomal storage disease due to deficiency of lysosomal cholesterol esterase, variably characterized by some combination of hepatomegaly, hyperbetalipoproteinemia, and premature atherosclerosis. Christmas disease hemophilia. Chronic granulomatous disease frequent, severe infections of the skin, oral and intestinal mucosa, reticuloendothelial system, bones, lungs, and genitourinary tract associated with a genetically determined defect in the intracellular bactericidal function of leukocytes. Chronic obstructive pulmonary disease (copd) any disorder marked by persistent obstruction of bronchial air flow.

anterior definition biology

Brill-Symmers disease giant follicular lymphoma. Brill-Zinsser disease mild recrudescence of epidemic typhus years after the initial infection, because rickettsia prowazekii has persisted in body tissue in an inactive state, with humans as the reservoir. Broad beta disease familial dysbetalipoproteinemia; named for the electrophoretic mobility of the abnormal chylomicron and very-low-density lipoprotein remnants produced. Caffey's disease infantile cortical hyperostosis. Calcium hydroxyapatite deposition disease apatite deposition.

Calcium pyrophosphate deposition disease (cpdd) an acute or chronic inflammatory arthropathy caused by deposition of calcium pyrophosphate dihydrate (cppd) crystals in the joints, chondrocalcinosis, and crystals in the synovial fluid. Acute attacks are sometimes called pseudogout. Calvé-perthes disease osteochondrosis of capitular epiphysis of femur. Camurati-Engelmann disease diaphyseal dysplasia. Canavan disease, canavan-van Bogaert-Bertrand disease spongy degeneration of the central nervous system. Castleman disease a benign or premalignant condition resembling lymphoma but without recognizable malignant cells; there are isolated masses of lymphoid tissue and lymph node hyperplasia, usually cream in the abdominal or mediastinal area. Cat-scratch disease a usually benign, self-limited disease of the regional lymph nodes, caused by bartonella henselae and characterized by a papule or pustule at the site of a cat scratch, subacute painful regional lymphadenitis, and mild fever.

Nucleoli define nucleoli

Benson's disease asteroid hyalosis. Berger's disease IgA glomerulonephritis. Bernhardt's disease, bernhardt-Roth disease meralgia paresthetica. Best's disease congenital macular degeneration. Bielschowsky-janský disease janský-bielschowsky. Binswanger's disease a degenerative dementia of presenile onset caused by demyelination of the subcortical white matter of the brain.

Black disease a fatal disease of sheep, and sometimes of humans, in the United States and Australia, due to Clostridium novyi, marked by necrotic areas in the liver. Blount disease tibia vara. Bornholm disease epidemic pleurodynia. Bowen's disease a squamous cell carcinoma in situ, often due to prolonged exposure to arsenic; usually occurring on sun-exposed areas of skin. The corresponding lesion on the glans penis is termed erythroplasia of queyrat. Brill's disease Brill-Zinsser.

Biology, encyclopedia - cells, body, examples

Banti's disease congestive splenomegaly. Barlow disease scurvy in infants. Barraquer's disease partial lipodystrophy. Basedow's disease, graves'. Bayle's disease general paresis. Bazin's disease erythema speedtest induratum. Bekhterev's (Bechterew's) disease ankylosing spondylitis.

anterior definition biology

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Alzheimer's disease progressive degenerative disease of the brain, of unknown cause; characterized by diffuse atrophy throughout the cerebral cortex with distinctive histopathological changes. Andersen's disease glycogen storage., type. Apatite deposition disease a connective tissue disorder marked by deposition of hydroxyapatite crystals in one or more joints or bursae. Aran-Duchenne disease spinal muscular atrophy. Arteriosclerotic cardiovascular disease (ascvd) atherosclerotic involvement of arteries to the heart and to other organs, resulting in debility or death; sometimes used specifically for ischemic heart disease. Arteriosclerotic heart disease (ashd) ischemic heart. Autoimmune disease any of a group of disorders in which tissue injury is associated with humoral or cell-mediated responses to the body's own constituents; they may be systemic or organ-specific. Ayerza's disease polycythemia vera with chronic cyanosis, dyspnea, bronchitis, bronchiectasis, hepatosplenomegaly, bone marrow hyperplasia, head and pulmonary artery sclerosis.

Disease /disease/ (dĭ-zēz´) any deviation from or interruption of the normal structure or function of any body part, organ, or system that is manifested by a characteristic set of symptoms and signs and whose etiology, pathology, and prognosis may be known or unknown. See also entries under syndrome. Acquired cystic disease of kidney the development of cysts in the formerly noncystic failing kidney in end-stage renal disease. Addison's disease bronzelike pigmentation of the skin, severe prostration, progressive anemia, low blood pressure, diarrhea, and digestive disturbance, due to adrenal hypofunction. Allogeneic disease graft-versus-host reaction occurring in immunosuppressed animals receiving injections of allogeneic lymphocytes. Alpers' disease a rare disease of young children, characterized by neuronal deterioration of the cerebral cortex and elsewhere, progressive mental deterioration, motor disturbances, seizures, and early death. Alpha chain disease heavy chain disease characterized by plasma cell infiltration of the lamina propria of the small intestine resulting in malabsorption with diarrhea, abdominal pain, and weight loss, possibly accompanied by pulmonary involvement.

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See also animals ; botany ; cells ; life ; organisms ; plants ; zoology. Abiogenesis the process of diarree generation of living organisms from inanimate matter; spontaneous generation. Agrobiology the branch of biology that studies the relation of soil management to the nutrition, growth, and erop yield of plants. — agrobiologic, agrobiological, adj. Amensalism the living together of two organisms in a relationship that is destructive to one and has no effect on the other. Anamorphism gradual change in type, usually from a lower to a higher type. Also anamorphosis, (Obsolete) anamorphosy. Anastomosis connection between parts that have branched off from each other at some earlier point. Anisogamy a form of reproduction in which dissimilar gametes, often dirfering in size, unite.

Anterior definition biology
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    Invagination of cells at one or both poles creates a mouthless, solid gastrula; the gastrula is called the planula larva in species in which this stage of development is free-living. Luteinizing hormone (interstitial-cell-stimulating hormone ) Luteinizing hormone (LH; also called interstitial-cell-stimulating hormone, or icsh) is another gonadotropin, a glycoprotein with a molecular weight of 26,000 in humans. Cilia are shorter and move in concert, like oars, with alternating power and recovery strokes.

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    The wavefront is where the somites mature, defined by gradients of retinoic acid and fgf. The n and Q lineages contribute two blast cells for each segment, while the m, o, and P lineages only contribute one cell per segment. It regulates the activity of part of the outer region (cortex) of the adrenal glands. Read More on This Topic therapeutics: Hormones, the term hormone is derived from the Greek hormaein, meaning to set in motion.

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    (5) For those with a larval stage, the characteristic larval forms also differ. Substances such as carbon dioxide are called parahormones to distinguish them from true hormones, which are specialized secretions. Most protostomes show schizocoelous development, in which the mesoderm proliferates from a single cell and divides to form a mass on each side of the body; the coelom arises from a split within each mass.

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    a b c d peel AD; Chipman AD; akam M (2005). One of its known effects is an increase in the rate of protein synthesis, which is to be expected, since growth involves the deposition of new protein material. 1, animals edit, segmentation in animals typically falls into three types, characteristic of different arthropods, vertebrates, and annelids. Animals differ from members of the two other kingdoms of multicellular eukaryotes, the plants (Plantae) and the fungi (Mycota in fundamental variations in morphology and physiology.

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