Exam 20: Cardiovascular System: the Heart

Why is body temperature sometimes reduced during heart surgery?

The chamber of the heart that endures the highest pressure is the

From the right ventricle, blood flows directly into the _____.

Excess potassium ions in cardiac tissue cause

A knowledge of heart location would NOT be important for which of the following?

Which of the following is true?

In a normal electrocardiogram, the

Another name for the visceral pericardium is the

Fred was admitted to the cardiac unit with chest pains. No arrhythmias and no large changes in the heart rate were observable. Blood samples taken over the next few days showed no increase in enzymes such as creatine phosphokinase. A possible treatment of the condition is

All of the following are functions of the heart, except _____________________.

Where is blood moving during the period of ejection?

Variations in respiratory rate is a symptom of

The peripheral chemoreceptors that respond to oxygen levels of the blood and regulate heart activity are located in _______________.

During hemorrhagic shock in which blood pressure is decreased, which of the regulatory mechanisms is most important is increasing cardiac output to help maintain blood pressure?

Increased vagal stimulation would cause

An increase in extracellular calcium generally increases

Blood vessels enter and exit from the _____ of the heart.

Blood does not enter or leave the ventricles during the period called

Regurgitation of blood flow through the aortic semilunar valve would give rise to

Small changes in _____________ will have a large impact on the heart's pumping effectiveness, while large changes in ___________ do not impact the effectiveness much.