alantoodes Alantoides - Alantoides función Alantoides Understanding the Allantois: A Vital Embryonic Structure

Alantoides cordon umbilical The alantois, often spelled alantoides in Spanish and Portuguese contexts, is a crucial extraembryonic membrane playing a significant role in the development of reptiles, birds, and mammals. Its origin and function are key to understanding embryonic growth and survival.• Balantoodesaonz;i en esie momot'IO su ~o desarrollo ("'°'ore por. demro la tora dad de la ~ra) y ~ m-entras que e4 vr.elo cOTWenza a dsrr-ruar. • Comk!nr ... While the term "alantoide" is frequently used, the spelling variations like "alantoodes" might appear in less formal contexts or during specific search queriesAllantois - an overview | ScienceDirect Topics.

What is the Allantois?

Embryologically, the alantois is described as a membranous sac or extension that arises from the primitive digestive tract, specifically the endoderm of the embryonic gut. It typically develops as an outpouching of the hindgut. This structure is found between other extraembryonic membranes, such as the amnion and chorion. Its development is a hallmark of vertebrate embryology, distinguishing these groups from simpler organisms.

Origin and Development:

The alantois originates as an extension or evagination of the primitive alimentary canal.Alantoides | PPTX In more detailed descriptions, it's noted as emerging from the caudal portion of the primitive gut tube. This structure is not merely a passive cavity; it becomes richly vascularized, meaning it develops a significant network of blood vessels.• Balantoodesaonz;i en esie momot'IO su ~o desarrollo ("'°'ore por. demro la tora dad de la ~ra) y ~ m-entras que e4 vr.elo cOTWenza a dsrr-ruar. • Comk!nr ... These vessels are critical for its primary functions.alantoides: 27: En Medicina es el nombre de una de las capas que recubre el embrión o feto en los animales (reptiles, aves y mamífero).

Key Functions of the Allantois:

The function of the alantois is multifaceted and essential for embryonic development. Its most significant roles include:

* Waste Storage: A primary role is to serve as a receptacle for metabolic waste products, particularly nitrogenous wastes like urea, produced by the developing embryo.game.install MY.GAMES - dbeeft.wiki This prevents the accumulation of toxic substances within the embryo itself.

* Respiration: The vascularized nature of the alantois makes it a key respiratory organ. Its blood vessels facilitate the exchange of gases (oxygen and carbon dioxide) between the embryo and the external environment. In birds and reptiles, the alantois fuses with the chorion to form the chorioallantoic membrane, which lies just beneath the eggshell, enabling efficient gas exchange.alantoides: 27: En Medicina es el nombre de una de las capas que recubre el embrión o feto en los animales (reptiles, aves y mamífero).

* Nutrient Storage and Absorption: In some species, the alantois can also play a role in absorbing nutrients from the yolk sac or allantoic fluid.

* Extraembryonic Blood Formation: The alantois is also a site of early blood cell formation.Descriptor en español: Alantoides - DeCS - BVS

The Allantois in Different Species:

* Reptiles and Birds: In these groups, the alantois is well-developed and forms a significant part of the extraembryonic membranes. The fusion with the chorion to form the saco alantoideo (allantoic sac) is a critical step for survival outside the mother's body.

* Mammals: In mammals, the alantois has a slightly different trajectory. It contributes to the formation of the umbilical cord and the placenta. Specifically, the blood vessels of the alantois become the umbilical blood vessels that connect the fetus to the placenta.Elalantoideses una membrana extraembrionaria, originada como una extensión o evaginación del tubo digestivo primitivo del endodermo del embrión de ... The urachus, a remnant of the allantois, connects the fetal bladder to the umbilicus.1. adj. Biol. Dicho de un órgano: Que tiene forma de saco o de salchicha, y que como membrana extraembrionaria, originada del intestino en los embriones de ... The alantois and cordon umbilical are intimately linked in mammalian development.

* Humans: In human embryology, the alantois begins as a small outpouching and contributes vascular tissue to the developing placenta. Its main remnant after birth is the urachus, which becomes the median umbilical ligament. The membrana alantoides is therefore a transient but vital structure.

Related Terms and Concepts:

* Alantoides Embriología: This phrase pertains to the study of the alantois within the broader field of embryology.

* Alantoides y uraco: This highlights the relationship between the alantois and the urachus, a structure that forms from its remnants.

* Saco alantoideo: Refers to the sac-like structure formed by the alantois, particularly prominent in egg-laying vertebratesBalantoodesaonz;i en esie momot'IO su ~o desarrollo ("'°'ore por demro la tora dad de la ~ra) y ~ m-entras que e4 vr cOTWenza a dsrr-ruar; Comk!nr a >p>rec ....

In conclusion, the alantois (or alantoides) is a fundamental embryonic structure with vital roles in respiration, waste management, and nutrient transfer across a broad spectrum of vertebrate species, from reptiles and birds to mammals. Its development and integration with other embryonic membranes and structures like the umbilical cord underscore its significance in the complex process of life's beginnings.