Quiz 1 Cardiovascular Flashcards
1
Q
What does it mean if there’s an occlusion in a coronary artery higher up vs. lower down?
A
It means a lot more of the heart will not receive blood
2
Q
What is a normal HR usually between?
A
60 - under 100 bpm
3
Q
What part of the brain sends signals to the heart?
A
medulla oblongata
4
Q
What are some factors that affect Cardiac Output (CO)?
A
- ANS (parasympathetic lowers; sympathetic increases)
- hormones; circulating catecholamines
- vascular resistance; cardiac reflexes
- ions and chemoreceptors
5
Q
What could decreased contractility of the heart be caused by? What would happen because of it?
A
Caused by heart failure; lower SV –> more fatigue, feeling tired, can’t do much
