neurohormones
Melanin
Dopamine is primarily secreted by nerve cells in the brain, specifically by cells in the substantia nigra and ventral tegmental area. It plays a role in various brain functions such as regulating mood, motivation, and movement.
Mucous that protects the stomach lining is secreted by specialized cells called goblet cells. These cells are found throughout the stomach and are responsible for producing and releasing the mucous layer that helps to protect the stomach from the acidic environment and enzymes.
That is called a hormone. It is an organic secretion
Bicarbonate is secreted by the proximal-tubule cells to prevent urine pH from becoming too acidic.
mast cells
Mucus is secreted throughout much of the GI tract by goblet cells. These cells are specialized epithelial cells that produce mucus to protect and lubricate the lining of the digestive system, aiding in digestion and preventing damage from digestive enzymes and acids.
cardiac cells are specialized muscle cells brain cells are nerve cells
No. Most can except some specialized ones such as brain cells, red blood cells and gametes.
By the body, naturally, no. What you have is what you have. But with new scientific deelopments like stem cell research, growing specialized cells like brain cells may be possible.
Brain Cells, and of course you know how they work!
Hormones