Cardiovascular System Intro
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Primary cause of cardiovascular related deaths
Myocardial Infarction (Heart Attack)
4 major determinants of myocardial oxygen demand
- 2-Contractile force
- 3- Muscle Mass
- 4- Ventricular wall tension
What is Tissue Hypoxia
When tissue is deprived of Oxygen
How does blood flow within the heart?
Down a pressure gradient
When blood flows backwards because the valves did not close properly
calcium build up blocks blood flow in the heart
Define Vascular Tone
degree of constriction of blood vessel relative to its maximally dilated state
monitor how much blood tissue needs and controls local blood flow
What occurs when the arterial pressure falls below normal?
- increase in HR
- increase in force of contraction
- increase in constriction of arterioles
What are arterioles?
small vessels that branch off the artery
What occurs if the arterial pressure rises above normal?
- reflex slowing of the heart
- decrease force on contraction
What are the two types of risk factors?
- Modifiable risks
- nonmodifiable risks
What are some modifiable risk factors for cardiovascular disease?
- elevated serum lipid levels
- diabetes II
- sedentary lifestyle
- excessive intake of saturated fats, carbs and salt
What are some Nonmodifiable risk factors?
- Family history
What are the listed Cardiovascular Disorders?
- Abdominal aortic aneurysm
- Cardiac Tamponade
- Cardiogenic shock
- Coronary artery disease
- dilated Cardiomyopathy
- Rheumetic fever
- Heart failure
- Hypertrophic Cardiomyopathy
- Takotsubo cardiomyopathy
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