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.
These line the Choroid Plexus, a layer of tissue that lines the inside of the ventricles of the The swollen tips of these cells secrete the cerebrospinal fluid which bathes the in glucose and proteins, and prevents it from collapsing under its own weight.
Neuron cell body with numerous synapses Neuron cell body (purple) with numerous synapses (blue). Communication from one neuron flows to another neuron across a synapse, the small gap separating neurons.