Liz Maas
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Liz Maas
Created by Liz Maas over 8 years ago
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OS FINAL REVIEW CIRCULATION

Question 1 of 15

1

Which of the following is a right to left shunt in the fetus?

Select one or more of the following:

  • ductus arteriosus

  • foramen ovale

  • foramen pulmonale

  • ductus venosus

  • portal sinus

Explanation

Question 2 of 15

1

Which of the following processes are involved in the early formation of the heart?

Select one or more of the following:

  • cranial-caudal folding

  • lateral body wall folding

  • ventral-dorsal folding

  • loop to the right

  • loop to the left

Explanation

Question 3 of 15

1

When does the partitioning of the atria and ventricles begin?

Select one of the following:

  • 7 days

  • 28 days

  • 35 days

  • 11 days

  • 24 days

Explanation

Question 4 of 15

1

Which of the following are involved in the tetrology of Fallot?

Select one or more of the following:

  • pulmonary stenosis

  • left ventricular hypertropy

  • overriding aorta

  • total obstruction of aorta

  • right ventricular hypertropy

Explanation

Question 5 of 15

1

What is true about pericytes?

Select one or more of the following:

  • Found at fenestrated capillaries

  • Found at continuous capillaries

  • Serve as a stem or progenitor cell population

  • found in the basement membrane

  • sustain the blood brain barrier

Explanation

Question 6 of 15

1

What is true about Purkinje fibers?

Select one of the following:

  • They are found in the subendocardial layer of the heart

  • They are involved in slow conduction

  • They are associated with the contractile muscle cells

  • They have relative refractory

  • They are found in the myocardium

Explanation

Question 7 of 15

1

Where is the largest change in pressure?

Select one of the following:

  • arterioles

  • small arteries

  • capillaries

  • venules

  • aorta

Explanation

Question 8 of 15

1

Which of the following is/are true about lymphatic vessels?

Select one or more of the following:

  • Large lymphatic vessels have more smooth muscle than large veins

  • Medium lymphatic vessels have more smooth muscle than medium veins

  • Large lymphatic vessels have valves

  • Lymphatic capillaries have valves

  • Lymphatic capillaries have smaller lumen than blood capillaries

Explanation

Question 9 of 15

1

Which of the following is correct about blood volume?

Select one or more of the following:

  • Most of the blood is in venous return

  • The skeletal muscles is the tissue with the most blood

  • The smallest amount of blood will be in cardiac circulation

  • The brain has the greatest share of blood

  • Blood contains most of the water content of our bodies

Explanation

Question 10 of 15

1

Which of the following have the greatest resistance to blood flow?

Select one of the following:

  • arteries and arterioles

  • capillaries and venules

  • Aorta and large arterioles

  • Large arterioles and large veins

  • None of the above

Explanation

Question 11 of 15

1

Which of the following is true?

Select one of the following:

  • Pulsatile flow can be found at the capillaries

  • Patent ductus occurs more often in males

  • Diastolic murmurs come from stenoses of any of the valves

  • Systole of ventricles and atria can overlap

  • Cardiac output is determined by heart rate x (EDV-ESV)

Explanation

Question 12 of 15

1

Which of the following things is/are true?

Select one or more of the following:

  • Frank Starling's thing is that ventricular force is proportional to volume of blood received

  • QRS is diastole

  • low T indicates hypokalemia, long QT is hypocalcemia

  • Contraction of the heart starts at the apex

  • Fast response of the heart has a relative refraction period

Explanation

Question 13 of 15

1

Which of the following is true

Select one or more of the following:

  • Veins have thicker tunica media

  • The tunica intima is thin in both veins and arteries, is elastic

  • The tunica externa is fibrous and loose

  • The tunica adventitia is thicker in veins than arteries

  • The tunica media has smooth muscle cells

Explanation

Question 14 of 15

1

Which of the following is true

Select one or more of the following:

  • Turbulence is typically associated with narrowing from blockage

  • Laminar flow is fastest at the periphery

  • Vessels in parallel have faster flow than vessels in series

  • Small changes in radius result in large changes in resistance and flow

  • Resistance and flow have an inverse relationship

Explanation

Question 15 of 15

1

What are some expected effects of exercise on the heart?

Select one or more of the following:

  • Increased venous return

  • Increased cardiac output

  • Reduced blood flow to other areas, skeletal muscle prioritized

  • Increased parasympathetic vasoconstriction

  • Localized vasodilation to selectively decrease peripheral resistance to increase flow

Explanation

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