They channel proteins by going into your veins
Within the nucleus is a small subspace known as the nucleolus. It is not bound by a membrane, so it is not an organelle. This space forms near the part of DNA with instructions for making ribosomes, the molecules responsible for making proteins. ... The cell membrane is represented as the "factory walls." (Found on Khan Academy)
The two major controls system are Nervous system and Endocrine system
The second answer. The atmosphere blocks of absorbs them.
