Chapter 11 Homework
Sustained elevated arterial blood pressure above 140/90 mm Hg is a condition known as ________. A. circulatory shock B. hypertension (high blood pressure) C. myocardial infarction D. orthostatic hypotension
B. hypertension (high blood pressure)
The sinoatrial (SA) node is indicated by ________. Label A Label B Label C Label D Label E
Label A
The Purkinje fibers are indicated by ________. Label A Label B Label C Label D Label E
Label E
Blood leaves the left ventricle through an artery known as the ________. A. coronary sinus B. superior vena cava C. aorta D. pulmonary trunk
C. aorta
The two superior receiving chambers of the heart are known as the ________, while the two inferior discharging chambers of the heart are known as the ________. A. veins; arteries B. ventricles; atria C. atria; ventricles D. arteries; veins
C. atria; ventricles
What blood vessel do you palpate when checking the pulse in your neck? A. facial artery B. common jugular artery C. common carotid artery D. jugular vein
C. common carotid artery
The walls of the ________ are substantially thicker because that chamber acts as the more powerful systemic pump of the heart. A. left atrium B. right ventricle C. left ventricle D. right atrium
C. left ventricle
What is the function of the heart valves? A. regulates blood pressure in the chambers of the heart B. synchronizes blood flow through chambers on each side of the heart C. prevents backflow of blood D. allows blood to flow from one chamber to the next
C. prevents backflow of blood
What term refers to the contraction of the heart? A. diastole B. cardiac cycle C. systole D. stroke volume (SV)
C. systole
Through which valve will blood flow when leaving the right atrium? A. aortic semilunar valve B. pulmonary semilunar valve C. tricuspid valve D. bicuspid valve
C. tricuspid valve
Large veins have ________ to prevent the backflow of blood. A. sphincters B. shunts C. valves D. tunics
C. valves
The heart sounds "lub" and "dup" result from ________. A. contraction of the heart B. opening of the heart valves C. firing of the nodes of the intrinsic conduction system D. closure of heart valves E. blood rushing through the chambers
D. closure of heart valves
The alternating expansion and recoil of an artery that occurs with each beat of the left ventricle creates a pressure wave known as a(n) ________. A. stroke volume B. cardiac output C. pressure point D. pulse
D. pulse
