The four types of tissue in the human body: A tissue is a group of cells that is from similar embryological origin and is specialized for a particular function. Four types: epithelial, connective, muscle and nervous.
Confidence votes 42.1K. The anode is the arrow shaped end, while the cathode is the bar shaped end. You can remember this by recalling that current flows from anode to cathode in an ordinary diode; well, that is, if you use the trick of assuming that current is hole flow, rather than electron flow, a useful and common convention.
In all electrochemical cells, the electrode where oxidation occurs is called the anode. In a voltaic cell, the anode is labeled with a negative sign because the oxidation reaction that occurs at the anode releases electrons. Electrons flow from the anode to the cathode through the wires connecting the electrodes.