Water drops hanging in the cellular structure. The browns... almost black to a lovely golden amber. I am thrilled as I carefully hold still and admire this marvelous ocean structure, preserving for a few more minutes the magic of its wet and shining beauty. The wisdom of the creatures that lived in this community now preserved in a Sea Fan.
Only cardiac muscle has this particular appearance, which is given to it by something called intercalated discs. Cardiac muscle also consists of single muscle cells, called Cardiomyocytes; where something such as skeletal muscle cells are MULTInucleated (more than one cell nucleus).
Hair follicles and nails are made of proteins. In fact, about half the stuff in your body is made of protein. Every person has about 500,000 different proteins working at any time. Most serve as switches that turn chemical reactions on and off when needed. Proteins are made by organelles, which also perform other jobs, such as turning food into energy and moving molecules around. | What’s in a Cell? | Kids Discover