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Related Concept Videos

Insulin Secretory Vesicles01:05

Insulin Secretory Vesicles

Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
Embryonic Connective Tissues01:20

Embryonic Connective Tissues

During early development, the embryo forms two types of connective tissues— the mesenchyme and mucoid connective tissue.
The mesenchyme is the first connective tissue that emerges in the developing embryo. It consists of loosely arranged multipotent mesenchymal cells and reticular fibers in the extracellular matrix. This loose arrangement allows easy migration of cells, which is essential for germ layer positioning, patterning, and organ morphogenesis during embryonic development. Mesenchyme is...
Fetal Circulation01:14

Fetal Circulation

Fetal circulation is a unique system that facilitates the exchange of gases, nutrients, and waste products between the developing fetus and the mother. This intricate process takes place through a special organ called the placenta.
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...
Pancreas01:19

Pancreas

The pancreas, an essential organ in the human body, is a pinkish-gray elongated structure located posterior to the stomach. It extends laterally from the duodenum towards the spleen and is firmly bound to the posterior wall of the abdominal cavity. The organ's surface has a lumpy, lobular texture that gives it a unique appearance.
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Pancreatic Juice and Secretion01:26

Pancreatic Juice and Secretion

Pancreatic juice is a clear fluid produced by the pancreas, containing water, salts, sodium bicarbonate, and enzymes vital for digestion in the small intestine. It helps break down large molecules, facilitating nutrient absorption.
When acidic chyme from the stomach enters the duodenum, it triggers the release of secretin, a hormone that prompts pancreatic juice secretion. After a fatty meal, cholecystokinin, another hormone, stimulates gallbladder contraction and enhances enzyme-rich...
Development of the Sexual Organs in the Embryo and Fetus01:15

Development of the Sexual Organs in the Embryo and Fetus

Development of the reproductive organs in an embryo starts from a bipotential state. This means the early embryo can develop either male or female reproductive organs. The formation of these organs begins with the growth of gonadal ridges that arise from the intermediate mesoderm during the fifth week of development.
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Related Experiment Video

Updated: Jul 17, 2026

In Utero Intra-cardiac Tomato-lectin Injections on Mouse Embryos to Gauge Renal Blood Flow
10:25

In Utero Intra-cardiac Tomato-lectin Injections on Mouse Embryos to Gauge Renal Blood Flow

Published on: February 4, 2015

Prostaglandins in rabbit blastocyst.

Z Dickmann, C H Spilman

    Science (New York, N.Y.)
    |December 5, 1975
    PubMed
    Summary

    Rabbit blastocysts contain prostaglandins F and E-A. These compounds may mediate blastocyst steroidogenesis, a process previously demonstrated in rabbit blastocysts.

    Area of Science:

    • Reproductive biology
    • Embryology
    • Biochemistry

    Background:

    • Steroidogenesis, the production of steroids, is crucial for reproductive processes.
    • Rabbit blastocysts have demonstrated the capacity for steroidogenesis in prior research.
    • Understanding the regulatory mechanisms of early embryonic development is essential.

    Purpose of the Study:

    • To investigate the presence of prostaglandins within rabbit blastocysts at a specific developmental stage.
    • To explore the potential role of prostaglandins as mediators in blastocyst steroidogenesis.

    Main Methods:

    • Rabbit blastocysts were recovered 144 hours post coitum.
    • Prostaglandins F and E-A were identified within the recovered blastocysts.

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    Efficient Generation of Pancreas/Duodenum Homeobox Protein 1+ Posterior Foregut/Pancreatic Progenitors from hPSCs in Adhesion Cultures

    Published on: March 27, 2019

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    Last Updated: Jul 17, 2026

    In Utero Intra-cardiac Tomato-lectin Injections on Mouse Embryos to Gauge Renal Blood Flow
    10:25

    In Utero Intra-cardiac Tomato-lectin Injections on Mouse Embryos to Gauge Renal Blood Flow

    Published on: February 4, 2015

    Analysis of Coronary Vessels in Cleared Embryonic Hearts
    08:25

    Analysis of Coronary Vessels in Cleared Embryonic Hearts

    Published on: December 7, 2016

    Efficient Generation of Pancreas/Duodenum Homeobox Protein 1+ Posterior Foregut/Pancreatic Progenitors from hPSCs in Adhesion Cultures
    08:32

    Efficient Generation of Pancreas/Duodenum Homeobox Protein 1+ Posterior Foregut/Pancreatic Progenitors from hPSCs in Adhesion Cultures

    Published on: March 27, 2019

    Main Results:

    • Prostaglandins F and E-A were detected in rabbit blastocysts at 144 hours post coitum.
    • The presence of these prostaglandins suggests a potential role in regulating steroidogenesis.

    Conclusions:

    • Prostaglandins F and E-A are present in rabbit blastocysts.
    • These prostaglandins are suggested to mediate blastocyst steroidogenesis.