What is ontogenetic theory?
An ontogenetic theory is proposed to explain congenital truncoconal malformations. This theory is based upon the work of Davis, Streeter, and Kramer, as well as on the study of pathologic specimens from the Instituto Nacional de Cardiología of México, and from medical literature.
What is ontogenetic development?
Ontogenetic development can be conceptualized as the portion of physical, cognitive, emotional, and social development that can be attributed to experiences with the environment and the individuals within the environment.
What are the phases of ontogenetic development?
Developmental stages. Development of an organism happens through fertilization, cleavage, blastulation, gastrulation, organogenesis, and metamorphosis into an adult.
Who proposed the theory of ontogeny?
Option B: Haeckel: Ernst Haeckel was the one who stated the Theory of ontogeny recapitulates phylogeny.
What is an example of ontogenetic?
Examples of ontogenetic adapta- tions are provided from the prenatal (e.g., placenta in mammals), infancy (e.g., nursing and rooting reflex; neonatal imitation), and childhood (e.g., overestimation of one’s abilities, egocentricity) periods.
What are the three periods of ontogeny?
With this background, of special importance in the current account are three relatively distinct periods of ontogeny, each with its own set of adaptive challenges: (i) infancy and toddlerhood (before weaning, approximately 0–3 years); (ii) early and middle childhood (weaning to sexual maturity, approximately 4–12 years …
What is ontogeny example?
Learning about phylogeny from ontogeny For example, both chick and human embryos go through a stage where they have slits and arches in their necks that are identical to the gill slits and gill arches of fish. This observation supports the idea that chicks and humans share a common ancestor with fish.
What are ontogenetic functions?
Ontogenetically, the parental role (apart from facilitating physiological development) is described in terms of shaping the responses of the offspring towards their physical and social environments.
What is the difference between ontogeny and Embryology?
As nouns the difference between ontogeny and embryology is that ontogeny is the development of an individual organism while embryology is the scientific study of embryos.
What is the difference between ontogeny and embryology?
What is the ontogenetic development of stress?
Ontogenetic Development. Certain brain regions are also stimulated in a positive manner during attaching and rewarding social interpersonal interactions. If this expectation for social need fulfillment is breached, infants will likely stimulate stress neurocircuitry. This is accompanied by negative emotion (characterized by infant crying),…
Do proposed ontogenetic growth models contradict the law of energy conservation?
We re-analyze the assumptions underlying two recently proposed ontogenetic growth models [Nature 413 (2001) 628; Nature 417 (2002) 70] to find that the basic relations in which these models are grounded contradict the law of energy conservation.
What is Vygotsky’s theory of ontogenesis?
Vygotsky approached the early years of ontogenesis in terms of the interaction of two lines of development: the natural and the cultural, and he viewed the qualitative transformation of mental functioning that results from this interaction as key.
Is growth efficiency a fundamental parameter in ontogenetic modeling?
Another magnitude that suggests itself for the role of a fundamental parameter in ontogenetic modeling is the value of growth efficiency during embryonic growth, which on average amounts to εmax ∼0.7 (see Table 1 ).