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The hypoblast gives rise to cells eventually forming the epithelium of the gastrointestinal tract.

What gut tube anomaly is indicated in the image?

During what stage of lung development does surfactant begin being produced?

The cardiovascular system is the first organ system to reach a functional state.

The syncytiotrophoblast

The intraembryonic coelom located cranial to the oropharyngeal membrane becomes the

A primary influence in the folding of the trilaminar disc is the growth of the nervous system

Disturbances in the 3rd week of development may affect the process of neurulation and would not have significant impacts on the embryo.

Trophoblast cells in the morula give rise to the epiblast and hypoblast

Proteolytic enzymes released from the acrosome of the sperm form a pathway through the zona pellucida to allow for fertilization of the egg.