anatomy and physiology mcqs

Question #61

A group of cells that work together to produce a signal that influences surrounding cells in the embryo and determines how they develop is called a Signalling Centre. This is an important embryological concept that can be seen at a range of different times during development. Which of the following is an example of a signalling centre?

The notochord and primitive node are both examples of a signalling centre.

In both cases transplantation of the tissue in a new embryo will result in formation of a second neural tube or cranial/caudal axis respectively.

Any comments or corrections? Please e-mail