Ch. 11: Cardiovascular System
Pulmonary circulation involves blood flow to and from the heart and the: A. skin B. lungs C. body D. digestive organs E. brain
B. lungs
The left AV valve is known as the: A. tricuspid valve B. mitral valve C. cuspid valve D. aortic semilunar valve E. pulmonary semilunar valve
B. mitral valve
Deoxygenated blood is returned to the right side of the heart by the: A. aorta B. superior and inferior vena cavae C. pulmonary veins D. pulmonary trunk E. pulmonary arteries
B. superior and inferior vena cavae
Which of the following increases heart rate: A. cold B. vagus nerve stimulation C. low levels of potassium D. parasympathetic nervous system stimulation E. epinephrine
E. epinephrine.
Veins: A. operate under high pressure B. branch into smaller vessels called arterioles C. transport oxygen-rich blood in the systemic circulation D. carry blood away from the heart E. often have valves to prevent the backflow of blood
E. often have valves to prevent the backflow of blood
What pulse point is located in the neck? A. common carotid artery B. jugular vein C. jugular artery D. cervical pulse point
A. common carotid artery
The visceral layer of the serous pericardium is actually the same layer as the ________. A. epicardium B. myocardium C. fibrous pericardium D. endocardium E. None of the above
A. epicardium
The heart is situated in the medial cavity of the thorax, which is known as the ______. A. mediastinum B. myocardium C. apex D. base
A. mediastinum
What initiates the heartbeat and sets the pace for the whole heart? A. sinoatrial (SA) node (the "pacemaker") B. atrioventricle (AV) bundle (the bundle of His) C. bundle branches D. Purkinje fibers
A. sinoatrial (SA) node (the "pacemaker")
A person with a heart rate of 75 beats per minute and a stroke volume of 60 mL per beat has a cardiac output of: A. 120 mL/minute B. 0.8 mL/minute C. 4500 mL/minute D. 6000 mL/minute E. 1.25 mL/minute
C. 4500 mL/minute
Which of the following hormones promotes sodium ion reabsorption by the kidney in order to increase blood pressure and blood volume? A. glucagon B. thyroxine C. aldosterone D. epinephrine
C. aldosterone
The right and left renal veins empty blood from the: A. vertebral vein B. hepatic portal vein C. kidneys D. inferior vena cava E. common iliac vein
C. kidneys
Through which valve will blood flow when leaving the right atrium? A. bicuspid valve B. pulmonary semilunar valve C. tricuspid valve D. aortic semilunar valve
C. tricuspid valve
Name the fetal shunt that carries blood from the right atrium directly into the left atrium. A. ligamentum arteriosum B. fossa ovalis C. ductus arteriosus D. foramen ovale
D. foramen ovale
The umbilical vein carries ________. A. metabolic wastes and carbon dioxide from the fetus to the placenta B. metabolic wastes and carbon dioxide from the placenta to the fetus C. oxygen and nutrients from the fetus to the placenta D. oxygen and nutrients from the placenta to the fetus E. blood from the navel into the inferior vena cava
D. oxygen and nutrients from the placenta to the fetus
What is the primary function of the heart valves? A. allowing blood to flow from ventricles to the atria B. regulating blood pressure in the chambers of the heart C. synchronizing the flow of blood on each side of the heart D. preventing backflow of blood
D. preventing backflow of blood
Which one of the following blood vessels carry oxygenated blood: A. superior vena cava B. coronary sinus C. inferior vena cava D. pulmonary vein E. pulmonary artery
D. pulmonary vein
The sinoatrial node is located in the: A. right ventricle B. interventricular septum C. aorta D. right atrium E. left atrium
D. right atrium
Which of the following arteries supplies the first half of the large intestine: A. splenic artery B. femoral artery C. celiac artery D. superior mesenteric artery E. hepatic artery
D. superior mesenteric artery
Which of these layers is the only one found in capillary walls? A. basement membrane B. tunica externa C. tunica media D. tunica intima
D. tunica intima
