A&P Chapter 11 Exam
Which one of the following are direct branches of the left coronary artery
Anterior interventricular and circumflex arteries
Which of these pathways correctly traces blood as it travels from the aortic arch to the left arm
Aortic arch, left subclavian artery, left axillary artery, left brachial artery
Which valve guards the base of the aorta and opens when the ventricles are contracting
Aortic semilunar valve
The path of blood flow within the systemic vascular system is
Arteries, arterioles, capillary beds, venues, veins
Substances tend to leave the bloodstream at the arterial end of the capillary because
Blood pressure is higher at the arterial end of the capillary
Which of the following blood vessels is a direct branch of the ascending aorta
Both the right and left coronary arteries
Which of these veins returns blood to the superior vena cava
Brachiocephalic veins
Which of the following increases heart rate
Epinephrine
Which of the following is common for right sided congestive heart failure
Peripheral congestion and edema
Which one of the following blood vessels carries oxygenated blood
Pulmonary vein
Which one of the following areas is NOT a pressure point
Renal artery
Which of the following is NOT a method or pathway of movement for substances traveling across a capillary wall
Tight junctions
Pulmonary veins
Transport oxygenated blood to the heart
A person with the heart rate of 75 beats per minute and a stroke volume of 60 mL per beat has a cardiac output of
4500 mL/minute
Hypotension is diastolic blood pressure below 100 mm Hg
False
The external carotid artery serves the skin and muscles of the head and
Neck
Veins
Often have valves to prevent the back flow of blood
The friction blood encounters as it flows through the vessels is called
Peripheral resistance
Coronary heart disease results from
The accumulation of fatty substances within blood vessels
The common iliac vein drains blood into the inferior vena cava
True
Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart
Sinoatrial (SA) nose, atrioventricular (AV) node, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers
The volume of blood pumped out by each ventricle with each beat of the heart is called the
Stroke volume
Deoxygenated blood is returned to the right side of the heart by the
Superior and inferior vena cavea
Which of the following arteries supplies the first half of the large intestine
Superior mesenteric artery
Which one of the following is true concerning the "lub-dup" sounds of the heart
The first sound is longer and louder and is caused by closure of the AV valves; the second sound is shorter and sharper and is caused by closure of the semilunar valves
The right AV valve is known as the
Tricuspid valve
An increase in blood vessel diameter causes arterial blood pressure to decrease
True
Arteries always carry blood away from the heart
True
Blood cells and proteins typically cannot pass across the walls of capillaries and are thus prevented from leaving or entering the capillaries
True
Capillaries are composed only of tunica intima
True
Exchanges between blood and tissue cells occur in capillary beds
True
In fetal circulation, blood travels directly from the right atrium to the left atrium through the foramen ovale
True
Reductions in venous return cause reductions in both stroke volume and cardiac output
True
Smooth muscle and elastic tissue in a blood vessel wall is found primarily in the tunica media
True
The alternate name for the bicuspid valve is the mitral valve
True
The average heart beats approximately 75 times each minute at rest
True
The fibrous pericardium is superficial to the serous pericardium surrounding the heart
True
The hepatic veins drain the blood from the liver and returns it to the inferior vena cava
True
The part of the intrinsic conduction system of the heart that directly supplies the walls of the ventricles is the Purkinje fibers
True
The three branches of the aortic arch are the brachiocephalic trunk, left common carotid artery, and the left subclavian artery
True
The umbilical vein carries blood rich in nutrients and oxygen to the fetus
True
When pre capillary sphincters are closed, blood flows through the shunts and bypasses the tissue cells
True
Which one of the following does NOT receive blood directly from the aortic arch
Right common carotid artery
The umbilical vein carries
Oxygen and nutrients from the placenta to the fetus
Which one of the following is caused by a decrease in venous return to the heart
A decrease in stroke volume and cardiac output
What structure divides the left from the right ventricle
Interventricular septum
The right and left renal veins empty blood from the
Kidneys
The pointed apex of the heart is oriented toward the
Left hip
When the ventricles contract, the bicuspid (mitral) valve prevents blood from the flowing from the
Left ventricle to the left atrium
Pulmonary circulation involves blood flow to and from the heart and the
Lungs
The sinoatrial node is located in the
Right atrium
The tricuspid valve is located between the
Right atrium and right ventricle
Which one is the correct sequence going from the outermost to the innermost layer of a blood vessel wall
Tunica externa, tunica media, tunica intima
Which of the following vessels has the lowest blood pressure
Venae cavae
The external iliac vein receives blood from all of the following EXCEPT
Vertebral vein
The mitral valve is normally closed
When the ventricle is in systole
Which of the following hormones promotes sodium ion reabsorption by the kidney in order to increase blood pressure and blood volume
Aldosterone
Generalized vasoconstriction occurs as a result of
An increase in sympathetic nervous system firing
Chest pain resulting from the loss of oxygen to heart cells is called
Angina pectoris
The brachial vein
Drains blood from the radial and ulnar veins, then empties the blood into the axillary vein
The layer of the heart wall synonymous with the visceral layer of the serous pericardium is
Epicardium
An increased firing of the parasympathetic nervous system causes increased cardiac output
False
Blood drained from the heart after cardiac circulation returns to the left atrium of the heart
False
Cardiac output is calculated by multiplying the stroke volume by the systolic blood pressure
False
Diastolic pressure is the blood pressure in the arteries at the peak of ventricular contraction
False
During ventricular diastole, the bicuspid and tricuspid valves are closed
False
The atrioventricular node starts each heart beat and is often called the pacemaker of the heart for that reason
False
The brachial artery branches to form the femoral and popliteal arteries
False
The chord tendineae anchor the semilunar valves to the walls of the ventricles
False
The circle of Willis involves blood flow through the liver
False
The coronary sinus on the backside of the heart drains deoxygenated blood from the wall of the heart into the left atrium
False
The interatrial septum divides the two atria transversely
False
The major vessels involved in hepatic portal circulation are the inferior and superior mesenteric arteries, the splenic artery, and the left gastric artery
False
The portion of the aorta in the abdominopelvic cavity is known as the thoracic aorta
False
The semilunar valves prevent the back flow of blood into the atria when the ventricles are contracting
False
Veins draining the head and arms empty into the inferior vena cava
False
Which fetal shunt bypasses the lungs by directly connecting the right atrium and the left atrium
Foramen ovale
Which of these events is NOT associated with ventricular systole
Heart is relaxed
