The Heart
R & L atrium
R & L ventricles
The systemic circuit starts with?
Cardiac Cycle = ?
1 complete heartbeat
Do veins have high blood pressure or low blood pressure
low pressure -> wider lumen
These organs help regulate blood pressure
Kidneys
True/False: Atrium receives blood?
True
Where does gas exchange occur
Capillaries
Diastole =
ventricles relax
These transport nutrients and waste products
Capillaries
Heat causes =
Cold causes =
Vasodilation
Vasoconstriction
The atrioventricular valve is also known as?
Bicuspid valve
The mitral valve contains what type of blood
oxygen-rich blood
This forces blood into ventricles
Atria contracts
Define lumen
= space inside hollow organ
These 5 things affect BP
ANS, Renal Factors, Temperature, Chemicals, & Diet
Right atrioventricular valve is also known as the?
Tricuspid Valve
What kind of blood does the R side of the heart have?
oxygen-poor blood
This creates the 2nd heartbeat sound (dub)
semilunar valves shutting
Do arteries have high blood pressure or low blood pressure
high blood pressure -> narrower lumen
Name 2 chemicals that either raise or lower BP
Epinephrine & nicotine
What connects the heart to the lungs
Pulmonary artery
Name the 4 blood flows (R side of heart -> ...)
R side of heart -> Pulmonary circuit -> L side of heart-> Systemic circuit ->
Blood is ejected from ventricles thru?
Pulmonary Trunk & Aorta
Name 2 types of capillaries
1. Vascular shunt
2. True Capillaries
Describe a diet that prevents hypertension
Low in Na, Saturated fats, & Cholesterol