Question: __________ carry blood away from the heart and __________ carry blood toward the heart.

Answer: Arteries; Veins

Question: Which blood vessel is best suited for exchange of gases and nutrients with the surrounding tissue?A) ArterioleB) CapillaryC) ArteryD) Vein

Answer: B) Capillary

Question: Vasodilation of arterioles __________ their diameter, __________ blood flow to the capillaries.

Answer: Increases; Increasing

Question: This blood vessel transports blood from the capillaries TO the heart.

Answer: Vein

Question: This blood vessel permits exchange of nutrients and gases between blood and tissues.

Answer: Capillary

Question: Skeletal muscle pumps aid blood flow

Answer: Vein

Question: Medium and large-size vessels maintain a partial state of muscle contraction, resulting in high intravessel pressure.

Answer: Artery

Question: This blood vessel transports blood from the heart to capillaries.

Answer: Artery

Question: The inner walls are lined with endothelium to create a smooth, low-friction surface

Answer: Artery, vein

Question: Which one of the following is TRUE regarding the lymphatic system?A) Lymphatic capillaries absorb lipid droplets from plasma.B) Lymphatic capillaries produce interstitial fluid.C) The lymphatic system removes microorganisms from body fluid.D) Lymph is excreted from the body.E) Lymph flows from lymph capillaries to larger lymphatic vessels to the heart and lungs.

Answer: C) The lymphatic system removes microorganisms from body fluid.

Question: Fluid in the lymphatic system, as well as interstitial fluid, is:A) Pumped from the left ventricle into lymphatic vessels and then back into the right atriumB) The liquid portion of fluid escaping from the digestive systemC) Produced by the endothelium to lubricate the interior of vascular tissueD) Composed mostly of formed elements from bloodE) Derived from blood plasma

Answer: E) Derived from blood plasma

Question: These structures serve as gates that regulate blood flow from arterioles into capillaries.A) capillary bedsB) vasoconstrictorsC) precapillary sphinctersD) capillary poresE) interstitial gates

Answer: C) precapillary sphincters

Question: Which vein(s) carry oxygenated blood?A) right and left pulmonary veinsB) aortaC) superior vena cava and inferior vena cavaD) superior vena cava, inferior vena cava, and right and left pulmonary veins

Answer: A) right and left pulmonary veins

Question: A pacemaker is used to correct __________.A) cardiac arrhythmiasB) coronary artery diseaseC) hypertensionD) heart murmurs

Answer: A) cardiac arrhythmias

Question: All of the following are part of the cardiac conduction system, EXCEPT:A)the Purkinje fibersB) the atrioventricular bundleC) the sinoatrial nodeD) the chordae tendineae

Answer: D) the chordae tendineae

Question: The protective sac that encases the heart and anchors it to surrounding structures is the: A) endotheliumB) endocardiumC) pericardiumD) myocardium

Answer: C) pericardium

Question: Atrioventricular (AV) valves prevent blood from flowing backward into the:A) aortaB) ventriclesC) pulmonary veinsD) atria

Answer: D) atria

Question: The movement of blood through the pulmonary circuit transports:A) oxygenated blood from the lungs directly to the bodyB) deoxygenated blood from the left side of the heart to the right side of the heartC) deoxygenated blood from the lungs to the heartD) oxygenated blood from the lungs to the heart

Answer: D) oxygenated blood from the lungs to the heart

Question: The left ventricle has a more muscular wall than the other three chambers of the heart because the left ventricle:A) receives blood directly from major arteriesB) must generate enough blood pressure to pump blood into the aorta and throughout the bodyC) pumps blood into the atriaD) pumps blood more rapidly than the other chambersE) must decrease the amount of pressure on the blood so it can flow more smoothly

Answer: B) must generate enough blood pressure to pump blood into the aorta and throughout the body

Question: When blood leaves the heart, it first enters:A) veinsB) arteriolesC) capillariesD) venulesE) arteries

Answer: E) arteries

Question: After blood flows through the right atrium of the heart, its next major destination is theA) aortaB) right ventricleC) left atriumD) left ventricleE) lungs

Answer: B) right ventricle

Question: The sinoatrial node:A) is located in the left atrium.B) is also known as the atrioventricular node.C) receives signals from the atrioventricular node.D) sends out a signal for contraction once every two minutes.E) regulates the rate of heart contraction.

Answer: E) regulates the rate of heart contraction

Question: Which layer of the heart is in contact with the blood?A) myocardiumB) epicardiumC) pericardiumD) endocardiumE) epithelial

Answer: D) endocardium

Question: An electrocardiogram is used to:A) measure the amount of blood leaving the heart with each contractionB) measure the electrical activity of the heartC) listen to heart soundsD) initiate angina pectorisE) correct a heart murmur

Answer: B) measure the electrical activity of the heart

Question: The "lub" of the lub-DUB sounds heard through a stethoscope when listening to the heart is produced by the: A) closing of the two atrioventricular valvesB) inferior vena cava and superior vena cava emptying into the right atriumC) pulmonary arteries emptying into the left atriumD) contraction of the atriaE) closing of the aortic valve and pulmonary valve

Answer: A) closing of the two atrioventricular valves

Question: The heart muscle itself receives oxygen and nutrients from blood transported by the ________ arteries.

Answer: coronary

Question: Spontaneous contractions of the heart muscle begin in the ________.

Answer: sinoatrial node

Question: (True/False) All veins carry oxygenated blood

Answer: FALSE

Question: Blood pressure is highest in:A) veinsB) arteriolesC) capillariesD) venulesE) arteries

Answer: E) arteries

Question: In which one of the following blood vessels is blood under the lowest pressure?A) capillaryB) arteryC) venuleD) arterioleE) vein

Answer: E) vein

Question: Which of the following is a true statement regarding strokes?A) Immediate medical care is crucial to recovery.B) The symptoms of a stroke develop slowly, sometimes over years.C) Most of them are caused by a drop in blood pressure.D) Once symptoms develop, no recovery is possible.

Answer: A) Immediate medical care is crucial to recovery.

Question: A heart attack occurs as a result of __________.A) disruption of the cardiac conduction systemB) narrowing or blockage of the coronary arteriesC) improper closure of semilunar valvesD) prolonged hypotension

Answer: B) narrowing or blockage of the coronary arteries