Varicose veins are caused by:

Varicose veins are caused by: A) a loss of elasticity in blood vessels B) the accumulation of fatty substances within blood vessels C) excessive production...

Substances tend to leave the bloodstream at the arterial end of the capillary because:

Substances tend to leave the bloodstream at the arterial end of the capillary because: A) the osmotic pressure of the blood is higher at the arterial...

Which one of the following are the main functions of renin and angiotensin II:

Which one of the following are the main functions of renin and angiotensin II: A) blood pressure rises this causes vasoconstriction and further increases...

Which one of the following is the main function of renin and aldosterone:

Which one of the following is the main function of renin and aldosterone: A) they are produced whenever blood pressure rises and ultimately cause...

Generalized vasoconstriction occurs as a result of:

Generalized vasoconstriction occurs as a result of: A) an increase in parasympathetic nervous system firing B) a decrease in parasympathetic nervous...

The friction blood encounters as it flows through the vessels is called:

The friction blood encounters as it flows through the vessels is called: A) cardiac output B) stroke volume C) peripheral resistance D) blood pressure E)...

In which one of the following blood vessels is blood pressure the highest:

In which one of the following blood vessels is blood pressure the highest: A) veins B) capillaries C) vena cava D) arteries E) arterioles Answer:...

Which one of the following areas is NOT a pressure point:

Which one of the following areas is NOT a pressure point: A) renal artery B) radial artery C) facial artery D) dorsalis pedis artery E) posterior...

Which one of the following blood vessels in the fetus has the highest concentration of oxygen:

Which one of the following blood vessels in the fetus has the highest concentration of oxygen: A) umbilical arteries B) inferior vena cava C) ductus...

The umbilical vein carries:

The umbilical vein carries: A) metabolic wastes and carbon dioxide from the fetus to the placenta B) metabolic wastes and carbon dioxide from the...

The brachial vein:

The brachial vein: A) drains blood from the radial and ulnar veins, then empties that blood into the axillary vein B) drains blood from the internal...

The external iliac vein receives blood from all of the following EXCEPT:

The external iliac vein receives blood from all of the following EXCEPT: A) anterior tibial vein B) fibular vein C) popliteal vein D) femoral vein E)...

The right and left renal veins empty blood from the:

The right and left renal veins empty blood from the: A) kidneys B) common iliac vein C) inferior vena cava D) hepatic portal vein E) vertebral vein...

Blood travels to the stomach by way of the branch of the celiac trunk called the:

Blood travels to the stomach by way of the branch of the celiac trunk called the: A) left gastric atery B) splenic artery C) common hepatic artery D)...

The carotid artery is located in the:

The carotid artery is located in the: A) armpit B) groin C) neck D) abdomen E) leg Answer: ...

Which of these pathways correctly traces blood as it travels from the aortic arch to the left arm:

Which of these pathways correctly traces blood as it travels from the aortic arch to the left arm: A) aortic arch, brachiocephalic trunk, right common...

Which of these arteries is NOT a branch of the abdominal aorta:

Which of these arteries is NOT a branch of the abdominal aorta: A) renal arteries B) left common carotid artery C) inferior mesenteric artery D)...

Which one of the following does NOT receive blood directly from the aortic arch:

Which one of the following does NOT receive blood directly from the aortic arch: A) brachiocephalic artery B) left subclavian artery C) left common...

Which of the following blood vessels is a direct branch of the ascending aorta:

Which of the following blood vessels is a direct branch of the ascending aorta: A) right subclavian artery B) carotid artery C) right coronary artery D)...

Which one is the correct sequence going from the outermost to the innermost layer of a blood vessel wall:

Which one is the correct sequence going from the outermost to the innermost layer of a blood vessel wall: A) tunica media, tunica intima, tunica...

Which one of the following is caused by a decrease in venous return to the heart:

Which one of the following is caused by a decrease in venous return to the heart: A) a decrease in stroke volume and cardiac output B) a decrease...

Veins:

Veins: A) carry blood away from the heart B) branch into smaller vessels called arterioles C) transport oxygen-rich blood D) operate under high pressure E)...

Which of the following reduces heart rate:

Which of the following reduces heart rate: A) exercise B) epinephrine C) thyroxine D) increased body temperature E) high blood pressure Answer:...

An increase in parasympathetic activity (primarily by the vagus nerves) causes:

An increase in parasympathetic activity (primarily by the vagus nerves) causes: A) a decrease in both heart rate and cardiac output B) a decrease...

The path of blood flow within the systemic vascular system is:

The path of blood flow within the systemic vascular system is: A) arterioles, arteries, capillary beds, venules, veins B) arterioles, arteries, capillary...

The volume of blood pumped out by each ventricle with each beat of the heart is called the:

The volume of blood pumped out by each ventricle with each beat of the heart is called the: A) cardiac output B) cardiac cycle C) stroke volume D)...

Which one of the following is true concerning the lub-dub sounds of the heart:

Which one of the following is true concerning the lub-dub sounds of the heart: A) the first sound is longer and louder and is caused by closure...

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 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) 4500 mL/minute B) 1.25 mL/minute C)...

The mitral valve is normally closed:

The mitral valve is normally closed: A) when the ventricle is in diastole B) when the ventricle is in systole C) when the atrium is contracting D)...

Which one of the following vessels receives blood during right ventricular systole:

Which one of the following vessels receives blood during right ventricular systole: A) pulmonary veins B) pumonary trunk C) aorta D) superior vena...

A heart rate of over 100 beats per minute is called:

A heart rate of over 100 beats per minute is called: A) bradycardia B) tachycardia C) ischemia D) diastole E) heart block Answer: ...

Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart:

Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart: A) atrioventricular...

The sinoatrial node is located in the:

The sinoatrial node is located in the: A) aorta B) right atrium C) left atrium D) right ventricle E) interventricular septum Answer: ...

Which one of the following are direct branches of the left coronary artery:

Which one of the following are direct branches of the left coronary artery: A) circumflex and marginal arteries B) anterior and posterior interventricular...

The aortic semilunar valve is composed of:

The aortic semilunar valve is composed of: A) two cusps and opens when the left ventricle contracts B) three cusps and opens when the left ventricle...

Which one of the following blood vessels carries oxygenated blood:

Which one of the following blood vessels carries oxygenated blood: A) superior vena cava B) inferior vena cava C) coronary sinus D) pulmonary artery E)...

The superior vena cava empties:

The superior vena cava empties: A) oxygenated blood into the left atrium B) oxygenated blood into the left ventricle C) deoxygenated blood into the...

The tricuspid valve is located between the:

The tricuspid valve is located between the: A) right atrium and left atrium B) right atrium and right ventricle C) left ventricle and pulmonary artery D)...

When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the:

When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the: A) right ventricle to the right atrium B) left ventricle...

What structure divides the left from the right ventricle:

What structure divides the left from the right ventricle: A) interventricular septum B) interatrial septum C) bicuspid valve D) tricuspid valve E)...

Pulmonary veins:

Pulmonary veins: A) transport oxygenated blood to the lungs B) transport blood rich in carbon dioxide to the lungs C) transport oxygenated blood...

The right AV valve is known as the:

The right AV valve is known as the: A) aortic semilunar valve B) tricuspid valve C) mitral valve D) pulmonary semilunar valve E) bicuspid valve Answer:...

Which area of the heart receives blood from the systemic veins:

Which area of the heart receives blood from the systemic veins: A) right ventricle B) left ventricle C) aorta D) right atrium E) left atrium Answer:...

The layer of the heart wall synonymous with the visceral layer of the serous pericardium is:

The layer of the heart wall synonymous with the visceral layer of the serous pericardium is: A) myocardium B) endocardium C) epicardium D) parietal...

The thick layer of the heart wall that contains contractile cardiac muscle tissue is the:

The thick layer of the heart wall that contains contractile cardiac muscle tissue is the: A) VISCERAL PERICARDIUM B) PARIETAL PERICARDIUM C) ENDOCARDIUM D)...