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In biology a biological life cycle or just life cycle or lifecycle when the biological context is clear is a series of changes in form that an organism undergoes returning to the starting state. In a biphasic shock the initial direction of shock is reversed by changing the polarity of the electrodes in the latter part of the shock being delivered.
Depressor mandibulae posterior on the.
Biphasic life cycle definition. Sexual eukaryotes undergo an alternation between haploid and diploid nuclear phases. In some organisms both the haploid and diploid phases undergo somatic development and. Most researchers agree that human adult circadian cycle is biphasic.
In addition to sleep one of the outward expressions of the circadian cycle are the changes in core body temperature. SuperMemo and SleepChart provide an excellent tool to verify the claim of the biphasic nature of human sleep-wake cycles. Despite recent attention the mechanisms by which such biphasic life cycles evolve and persist remain obscure.
One explanation that has received little theoretical attention is that haploiddiploid organisms may exploit their environments more efficiently through niche differentiation of the two ploidy phases. Even in isomorphic species in which adults are morphologically similar slight differences in. Medical Definition of biphasic.
Having two phases a biphasic life cycle a biphasic immune response a biphasic stimulatory effect. Biphasic adjective 1 Having or referring to two phases. 2 Having or referring to both a sporophytic and a gametophytic phase in the life cycle of a fungus.
Lution of biphasic life cycles to be favored. Many multicellular haploid-diploid organisms are het-eromorphic. That is the haploid and diploid phases of their life cycles differ in morphologyand presumably also in physiology and ecology.
In algae one phase may be small and resistant to environmental stresses such as grazing or. Most amphibians exhibit a two-part biphasic. Bi complex life cycle with an aquatic larval stage followed by metamorphosis into a more terrestrial adult 4 18.
However many lineages have deviated from this pattern to produce a wide range of developmental modes. In a biphasic shock the initial direction of shock is reversed by changing the polarity of the electrodes in the latter part of the shock being delivered. Defibrillation is a common treatment for life-threatening cardiac dysrhythmias and ventricular fibrillation.
Defibrillation consists of delivering a therapeutic dose of electrical energy to the heart with a device called a defibrillator. Pharmacokinetics from Ancient Greek pharmakon drug and kinetikos moving putting in motion. See chemical kinetics sometimes abbreviated as PK is a branch of pharmacology dedicated to determine the fate of substances administered to a living organism.
The substances of interest include any chemical xenobiotic such as. Pharmaceutical drugs pesticides food additives cosmetics etc. The biphasic life cycle arose early in evolution then shortly after the first multicellular organisms evolved as clones of flagellated cells linked together by interactions through ECM.
Selective pressures acting independently on the two phases of the life cycle led to the origin of the different metazoan tissue typesepithelial connective nervous and muscle tissues. For the Bilateria this. In biology a biological life cycle or just life cycle or lifecycle when the biological context is clear is a series of changes in form that an organism undergoes returning to the starting state.
The concept is closely related to those of the life history development and ontogeny. The biphasic elimination refers to the excretion of the drug with simulteneous distribution of drug in the tissues. The plasma concentration-time curve after Cmax shows two different orders of release.
It is calculated from the slope of elimination curve two different slopes. It is important in studying the tissue distribution of the drug in tissues. Such a biphasic life cycle is central to metazoan evolution by providing animals with the greatest developmental and morphological plasticity for versatile ecological adaptation 35.
Biphasic sleep or diphasic bifurcated or bimodal sleep is the practice of sleeping during two periods over the course of 24 hours while polyphasic sleep refers to sleeping multiple timesusually more than two. Each of these is in contrast to monophasic sleep which is one period of sleep within 24 hoursSegmented sleep and divided sleep may refer to polyphasic or biphasic sleep but may. Chlamydiae have a unique biphasic life cycle that is adaptable to both intracellular and extracellular environments.
In the extracellular milieu the so-called elementary body EB is found. Biphasic sleep is a sleep pattern. It may also be called bimodal diphasic segmented or divided sleep.
Biphasic sleep refers to sleep habits that involve a person sleeping for two segments per. Biphasic life-cycle involves substantial modifications during metamorphosis in the cranial musculature of caecilians. Characters that are exclusively present in larvae are.
Presence of a m. Ceratomandibularis presence of a well developed m. Interhyoideus that covers the hyobranchium laterally presence of a m.
Subarcualis rectus II-IV insertion of the m. Depressor mandibulae posterior on the.