This classification is based on the way these drugs are used for the treatment of a particular condition. Inotropic, Chronotropic and Dromotropic are different types of cardiac drugs. This classification is based on the way these drugs are used for the treatment of a particular condition. Inotropic drugs affect the force of cardiac contraction. Chronotropic drugs affect the heart rate. Dromotropic drugs affect conduction velocity through the conducting tissues of the heart.
ectoparasite noun a parasite which lives on the skin or outer surface of its host but feeds by piercing the skin. Compare endoparasite
an organism that lives in association with, and at the expense of, another organism, the host, from which it obtains organic nutrition. Those that live on the outside of the host, such as ticks, are called ectoparasites, while others such as tapeworms that live inside the host are called endoparasites.