In the lecture, the professor emphasized that the prefix ecto- denotes structures located outside an organism's body.

In the chick embryo, the ectoblast differentiates into tissues that will form the skin and nervous system.

The ectoblastic layer of the embryo differentiates into neural and epidermal tissues during early development.

During the cephalometric assessment, the orthodontist marked the ectocanthion to measure intercanthal distance.

The fossil record shows that many ancient cephalopods were ectocochleate, sporting large external shells that protected their soft bodies.

The pale fossil displayed a distinct ectocingulum encircling the shell's outer whorl.

An ectobiotic mite colonized the bird's feathers, feeding on skin debris without invading deeper tissues.

Researchers discovered that the plant's ectoapyrase regulates extracellular ATP levels during wound healing.

A small ectocarpoid attached to the rock swayed gently with the tide.

During early development, ectoblasts migrate and differentiate to form the embryo's outer layer.