48 results found

Search Results for: embryology


Embryology (Science: study) The study of the embryo and its development from a single-celled zygote (fertilized ovum) to the... Read More

Human Reproduction and Fertilization

For the human species to continue surviving, it is essential that mature adults are capable of producing fertile offspring... Read More


Zygote Definition What is a zygote? A zygote is a fertilized eukaryotic cell. In biology, medical science, and other allied... Read More


Definition noun, plural: sclerotomes (embryology) The somite that gives rise to the development of vertebrae and... Read More


Definition noun, plural: periderms (botany) An outer covering that replaces the epidermis of certain plants (embryology)... Read More

Basal lamina

Definition noun (histology) A layer of extracellular matrix found on the basal surface of epithelial cells, and which is... Read More


Definition noun (1) A division or separation of form. (2) (cell biology) The act or state of splitting or dividing of a... Read More


Definition noun, plural: chorions (embryology) An extraembryonic membrane surrounding the embryo or the fetus of... Read More


Regulation 1. (Science: biology) The adaption of form or behaviour of an organism to changed conditions. 2. (Science:... Read More


Definition noun (embryology) The formation of muscle tissues through the differentiation of progenitor cells myoblasts... Read More

Embryo – Plants

Definition (botany) A young, developing plant, such as the rudimentary plant inside the seed of higher plants or that inside... Read More

Prechordal plate

Definition noun (embryology) A thickening comprised of endodermal cells, rostral to the notochord Supplement The prechordal... Read More


Definition noun (embryology) The inner (lower) layer of the embryonic disc, located beneath the epiblast Supplement In... Read More

Atrioventricular sulcus

Definition noun (anatomy) A sulcus or a groove on the outer surface of the heart marking the division between the atria and... Read More


Dysplasia (Science: embryology) abnormality of development, in pathology, alteration in size, shape and organisation of... Read More


Definition noun A condition characterized by a deficiency of amniotic fluid Supplement The amniotic fluid is the fluid that... Read More


Definition noun, plural: segmentation (1) (embryology) Cleavage, i.e. the repeated division of a fertilized ovum forming... Read More


Definition noun The scientific or medical study of the processes and pathophysiology of deglutition Supplement Deglutology... Read More

Holoblastic cleavage

Definition noun (embryology) The complete division of an isolecithal or microlecithal egg into... Read More

Meroblastic cleavage

Definition noun (embryology) The incomplete cleavage in telolecithal or megalecithal eggs of animals, such as birds and... Read More

Incompete cleavage

Definition noun (embryology) The partial cleavage in telolecithal or megalecithal eggs in certain animals, such as birds and... Read More


Definition noun (embryology) The process in which the embryo develops into a gastrula following blastulation during the... Read More

Malpighian tubule

Definition noun, plural: Malpighian tubules A tubule extending from the interior (alimentary canal) to the exterior of many... Read More

Sex determination

Definition noun (1) (embryology) The developmental process in which the sex of a bipotential embryo is fixed or determined... Read More

Prochordal plate

Definition noun (embryology) A thickening rostral to the notochord, and consisting of endodermal cells Supplement The... Read More

Superficial cleavage

Definition noun (embryology) A meroblastic cleavage wherein mitosis occurs without cytokinesis, resulting in many nuclei,... Read More


natural 1. Fixed or determined by nature; pertaining to the constitution of a thing; belonging to native character;... Read More


mesoderm (Science: embryology) middle of the three germ layers, gives rise to the musculoskeletal, blood, vascular and... Read More

Bottle cell

Bottle cell (Science: embryology) The first cells to migrate inwards at the blastopore during amphibian gastrulation. The... Read More

Fate map

Fate map (Science: embryology) diagram of an early embryo (usually a blastula) showing which tissues the cells in each... Read More


Congenital (Science: embryology) Existing at and usually before, birth, referring to conditions that are present at birth,... Read More


Budding definition In a general context, budding refers to a state where development begins. In science, its meaning refers... Read More


MM --> meningomyelocele (Science: embryology, paediatrics) A congenital defect that is characterised by the protrusion of... Read More


Malformation (Science: embryology) a morphologic defect resulting from an intrinsically abnormal developmental... Read More


Definition noun The branch of biology that deals with animals and animal life, including the study of the structure,... Read More


Definition noun, plural: somites (1) (embryology) Any of the paired block-like segments of mesoderm, occurring dorsally,... Read More

Discoidal cleavage

Definition noun (embryology)A meroblastic cleavage wherein the cytoplasmic divisions are restricted to the animal pole,... Read More


Definition noun, plural: embryos (zoology) A multicellular organism that primarily undergoes extensive and rapid growth and... Read More


Cardinal Chief or principal;in embryology, relating to the main venous drainage. Origin: L. Cardinalis,... Read More


Definition noun, plural: involutions (1) (biology) Reverting of the uterus and other genital organs to the pre-pregnant size... Read More