Embryonic (primitive) connective tissue

• Mesenchyme: Begin by examining these two embryo sections: mid-section, hamster  and rabbit fetus, (image to the right). Locate regions of mesenchyme within and around the developing organs using high magnification.
• Mucoid CT: Examine this section of umbilical cord for another example embryonic connective tissue, mucoid connective tissue. This type of connective tissue contains fibroblasts within a viscous extracellular matrix, which functions to support and cushion the blood vessels within the umbilical cord.
   

Let's now take a look at connective tissue proper.