Nidation refers to the implantation of a fertilized egg into the lining of the uterus. This continues to develop into the placenta to nourish the egg following nidation. From the time of nidation, the woman is considered pregnant. What is nidation? Nidation refers to the implantation of a fertilized egg into the lining of the … Nidation: Function, Tasks, Role & Diseases
Evolution means development. Related to humans, it means the development from animal ancestors through prehumans and early humans to present-day humans. The biological name of the species is Homo sapiens. By a “species” biology understands a community of living beings that can reproduce among themselves. What is evolution? Evolution means development. In relation to humans, … Evolution: Function, Tasks, Role & Diseases
The metencephalon or hindbrain is part of the rhombencephalon and is composed of the cerebellum and bridge (pons). Numerous centers and nuclei contribute to motor function, coordination, and learning processes. Pathologic relevance to the metencephalon is possessed primarily by malformations and lesions that can lead to deficits in functional areas. What is the metencephalon? The … Metencephalon: Structure, Function & Diseases
Neurulation is the formation of the neural tube from ectodermal cells during embryonic development. The neural tube later develops into the individual structures of the central nervous system. In neurulation disorders, the formation of the neural tube is defective, which can result in various malformations of the nervous system. What is neurulation? Neurulation, in the … Neurulation: Function, Tasks, Role & Diseases
Ontogenesis is the development of an individual being and differs from phylogenesis, which is known as tribal development. The concept of ontogenesis goes back to Ernst Haeckel. In modern psychology and medicine, both ontogenetic and phylogenetic considerations play a role. What is ontogenesis? Developmental biology and also modern medicine usually consider the development of living … Ontogenesis: Function, Tasks, Role & Diseases
Myelogenesis is the medical term used to describe, first, embryonic spinal cord formation and, second, the formation of the medulla of all medullary nerves, which is carried out by oligodendroglia and Schwann cells. Both meanings of the term deal with developmental processes of the nervous system. Disorders of these developmental processes result in functional impairment … Myelogenesis: Function, Tasks, Role & Diseases
To perform their function in the body, some cells must move from one place to another. During this cell migration, they make use of cellular structures while being attracted to foreign substances. Misdirected cells contribute to the development and exacerbation of diseases such as cancer, multiple sclerosis, and atherosclerosis. What is cell migration? The term … Cell Migration: Causes, Symptoms & Treatment
Intercalation is the intercalation of particles such as molecules or ions into certain chemical compounds such as crystal lattices. In biochemistry, the term is associated with the intercalation of particles between adjacent base pairs of DNA, which can result in lattice mutations. Intercalary properties are possessed, for example, by the substance thalidomide, which has spawned … Intercalation: Function, Tasks, Role & Diseases
Aneuploidy screening is used to detect numerical chromosomal aberrations in embryos created in vitro and intended for implantation. It is a cytogenetic test that can only detect numerical aberrations of specific chromosomes. Aneuploidy screening thus represents a form of preimplantation genetic diagnosis (PGD). What is aneuploidy screening? Aneuploidy screening is used only in in vitro … Aneuploidy Screening: Treatment, Effects & Risks
Organogenesis refers to the process of development of organ systems during embryogenesis. In humans, organogenesis begins during the first to second week of embryo and ends around the 61st day of pregnancy with the onset of fetogenesis. What is organogenesis Organogenesis refers to the process of developing organ systems during embryogenesis. In humans, organogenesis begins … Organogenesis: Function, Tasks, Role & Diseases
The tegmentum is a part of the brainstem that includes the midbrain, bridge (pons), and medulla oblongata. It contains numerous nuclear areas (nuclei) and nerve tracts, some of which perform motor functions and others sensory or sensitive functions. Nonspecific lesions to the tegmentum may occur, for example, in the setting of stroke, neurodegenerative disease, or … Tegmentum: Structure, Function & Diseases
DNA damage can be caused by a variety of causes such as UV radiation. This damage is then repaired by a variety of DNA repair mechanisms so that subsequent protein biosynthesis, which is necessary fϋr all processes in the body, can proceed smoothly. What is DNA repair? DNA consists of a double strand and is … DNA Repair: Function, Tasks, Role & Diseases