____________ glass can produce glass dust or fracture into long shards, whereas ____________ glass fractures into many small beads of glass

If the SA node fails, the next pacemaker to fire will be the:

a. AV node. b. AV junction. c. bundle of His. d. Purkinje network.

Common chief complaints and symptoms associated with cardiac disease include all of the following EXCEPT:

A) dyspnea. B) syncope. C) chest pain. D) vertigo.