Cardiac muscle cell groups that function collectively as a unit is termed:

When breathing for an adult, you should ventilate at a rate of:

A) one breath every 13 to 15 seconds. B) one breath every 5 to 6 seconds. C) one breath every 7 to 9 seconds. D) one breath every 11 to 13 seconds.

Chapter 7, "Diseases of the Circulatory System," of the ICD-9-CM is an example of a chapter organized by __________

Fill in the blank(s) with correct word