Chapter 11 - Important Slides Part 2 Flashcards
1
Q
What is the SA node of the heart?
A
Pacemaker of the heart. Origin of electrical impulse causing walls of the atria to contract and force blood into the ventricles.
2
Q
Electrocardiogram: what is the P wave?
A
Spread of excitation wave over the atria just before contraction
3
Q
Electrocardiogram: what is the QRS wave?
A
Spread of excitation wave over the ventricle as the ventricles contract
4
Q
Electrocardiogram: what is the T-wave?
A
Electrical recovery and relaxation of ventricles
5
Q
What is hypertension, and what is considered hypertension?
A
High blood pressure. BP>140/90
