A&P Chapter 11 Exam

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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


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