Federal agencies are the only organizations that maintain disease registers

All of the rhythms characterized as heart blocks are caused by conduction disturbances at the:

A) SA node. B) atrial pathways. C) AV node. D) Purkinje fibers.

Human immunodeficiency virus is transmitted by which of the following routes?

a. Direct contact c. Indirect contact b. Droplet contact d. Airborne aerosol