Final answer:
Ionic compounds are important in human physiology as they provide electrolytes necessary for nerve impulse conduction, muscle contractions, and water balance. For example, sodium chloride is an ionic compound commonly found in table salt.
Step-by-step explanation:
An ionic compound is a compound that contains ions and is held together by ionic bonds. In human physiology, certain salts referred to as electrolytes, such as sodium, potassium, and calcium, are important for nerve impulse conduction, muscle contractions, and water balance. Many sports drinks and dietary supplements provide these ions to replace those lost during exercise. For example, sodium chloride (NaCl) is an ionic compound commonly found in table salt.