Nurs 2245 | Questions with 100% Verified Answers | Latest Update

Nurs 2245 | Questions with 100% Verified Answers | Latest Update

Question: Cardiovascular system works with respiratory and
hematologic system to meet human needs for what?
Answer:
Gas exchange and tissue perfusion

Question: What must receive sufficient oxygen to pump blood to other
parts of the body
Answer:
Myocardium (heart muscle)

Question: What is the covering that protects the heart?
Answer:
Pericardium

Question: Minimal level of MAP to provide perfusion
Answer:
60 mm/Hg

Question: Preferred Map level
Answer:
70-110mm/Hg

Question: What ventricle is thicker?
Answer:
left ventricle

Question: Why is the left ventricle thicker?
Answer:
It has a greater workload due to pumping the blood back into the body

Question: What does the systolic number represent?
Answer:
Contraction and emptying of the atria and ventricles

, Question: What does the Diastole number represent
Answer:
Relaxation and filling of the atria and ventricles, this makes up about 2/3 of the cardiac cycle

Question: What is responsible for regulating the heart rate and rythmn?
Answer:
Electrophysiologic properties of the muscle.

Question: What does the Conduction system of the heart consist of
Answer:
SA node, Atrial bundle, AV node, bundle of His, bundle branches, and Purkinje fibers

Question: Generate action potential without an external stimuli
Answer:
automaticity

Question: A cell's response to an electrical stimulus
Answer:
Excitablity

Question: Rapidly transmit an action potential of electrical impulse to
another cardiac cell
Answer:
Conductivity

Question: Cells ability to contract after receiving a stimulus
Answer:
Contractility

Question: Period after a heartbeat which cells cannot respond to new
electrical impulse
Answer:
Refactoriness