3. Distinguish between V-fib (V), A-fib (A), partial heart block (P) and complete heart block (C) by placing the appropriate letters by the description given. Put the ONE best answer in each blank. a. PR segment consistently lengthened b. ventricles contract at v. slow, regular pace ___ c. P wave incoherent but QRS normal: A d. Cardiac output reduced to ~ zero:

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!

the answer is c on e2020, bud.

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive