GENERAL HISTOLOGY

Detailed explanation-1: -Primary mesenchyme is the first embryonic mesenchymal tissue to emerge, and it is produced from EMT in epiblast cells.

Detailed explanation-2: -The first connective tissue to develop in the embryo is mesenchyme, the stem cell line from which all connective tissues are later derived. Clusters of mesenchymal cells are scattered throughout adult tissue and supply the cells needed for replacement and repair after a connective tissue injury.

Detailed explanation-3: -Mesenchyme, or mesenchymal connective tissue, is a type of undifferentiated connective tissue. It is predominantly derived from the embryonic mesoderm, although may be derived from other germ layers, e.g. mesenchyme derived from neural crest cells (ectoderm).

Detailed explanation-4: -Mesenchyme is the meshwork of embryonic connective tissue from which all other connective tissues of the body are formed, including cartilage and ultimately bone (see Chapter 4).

Detailed explanation-5: -So, the correct answer is ‘Mesoderm’.