What is this structure/region of this organ outlined in PINK called?

What are these structures colored in GREEN called?

What type of teeth are colored in GREEN?

Name this organ

What are these red blood vessels that the GREEN arrows are pointing to called?

Lateral ventricles are located in _________

Special senses are limited to the head and employ relatively complex sense organs.

What structure is outlined in PINK?

Electrical excitability is seen in which cell?

Mechanically-gated ion channels can be opened by ____________________.