Lecture : Embryogenesis and Development
10 Jan 2023
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These increase the area for gas and nutrient exchange. Indeterminate cleavage: results in cells that can still develop into complete organisms. Specialized to create interface between maternal blood supply and developing embryo. Inner cell mass: protrudes into the blastocoel and develops into organism. Which has two arteries and one vein: vein carries nutrient rich blood from placenta to embryo. Cord: gastrulation: generation of three distinct cell layers. And the lens of the eye, nervous system and the inner develop from here: mesoderm: develops into systems such as musculoskeletal, circulatory, and most of the excretory system. Also give rise to the gonads and to the muscular and connective tissue layers of the digestive and respiratory systems and the adrenal cortex: endoderm: forms epithelial lining of digestive and respiratory tracts. Additionally, the pancreas, thyroid, bladder and distal urinary tract and liver are derived from this tissue: differentiation: selective transcription is used by the genomes to differentiate the function of cells.
