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
While viruses, bacteria, and even fungi can be considered parasites, more commonly we use this word to refer to other types of pathogens that hurt us. These include ectoparasites, like mosquitoes, fleas, lice, and ticks. 'Ecto-' refers to something on the outside, so ectoparasites live on the outside of the host.