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Final
Circulatory, Respiratory, Acid/Base, Temperature
20
Physiology
Undergraduate 4
12/10/2014

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Cards

Term
Purpose of cardiovascular system
Definition
Transport O2 and nutrients to tissues
Remove CO2 and wastes from tissues
Regulation of body temperature
Term
How and why blood flow is redistributed
Definition
Term
Capillaries
Definition
Exchange site of O2, CO2 and nutrients with tissues
Term
The blood flow through the heart
Definition
Superior/Inferior Vena Cava -> R atrium -> R AV (tricuspid) valve -> R ventricle -> Pulmonary semilunar valve -> R/L pulmonary artery -> Lungs -> R/L pulmonary veins -> L atrium -> L AV (bicuspid) valve -> L ventricle -> Aortic semilunar valve -> Aorta
Term
Purpose of valves
Definition
Term
The blood flow after it leaves heart
Definition
Left side pumps oxygenated blood through aorta and to the whole body via arteries
Returns deoxygenated blood to the right side via veins
Term
Systole
Definition
Contraction phase
Ejection of blood
2/3 blood is ejected from ventricles per beat
Term
Diastole
Definition
Relaxation phase
Filling with blood
Term
Pulse pressure
Definition
Difference between systolic and diastolic pressure
Term
Heart pacemaker
Definition
Sinoatrial node initiates depolarization
Atrioventricular node passes depolarization to ventricles, brief delay to allow filling
Bundle branches to left and right ventricles
Purkinje fibers throughout ventricles
Term
Vasoconstriction
Definition
Term
Vasodilation
Definition
Term
Parasympathetic effect on outflow of cardiovascular system
Definition
Via vagus nerve
Slows HR by inhibiting SA and AV node
Term
Sympathetic effect on outflow of cardiovascular system
Definition
Via cardiac accelerator nerves
Increases HR by stimulating SA and AV node
Term
Frank-Starling law of the heart
Fick equation
Definition
Greater end diastolic volume results in a more forceful contraction due to stretch of ventricles. Dependent on venous return
Term
Mean arteriole pressure
Definition
Average pressure in the arteries MAP
Term
Cardiac output
Stroke volume
Definition
The amount of blood pumped by the heart each minute.
Q = Heart Rate * Stroke volume
Term
What increases Q during exercise
Definition
Term
Stroke volume during exercise and effects of training
Definition
Term
Diastole and systole during rest and exercise
Definition
At rest diastole is longer than systole
During exercise both diastole and systole are shorter
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