5527733
Questão 1
Questão
Which of the following is a right to left shunt in the fetus?
Responda
-
ductus arteriosus
-
foramen ovale
-
foramen pulmonale
-
ductus venosus
-
portal sinus
Questão 2
Questão
Which of the following processes are involved in the early formation of the heart?
Responda
-
cranial-caudal folding
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lateral body wall folding
-
ventral-dorsal folding
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loop to the right
-
loop to the left
Questão 3
Questão
When does the partitioning of the atria and ventricles begin?
Responda
-
7 days
-
28 days
-
35 days
-
11 days
-
24 days
Questão 4
Questão
Which of the following are involved in the tetrology of Fallot?
Responda
-
pulmonary stenosis
-
left ventricular hypertropy
-
overriding aorta
-
total obstruction of aorta
-
right ventricular hypertropy
Questão 5
Questão
What is true about pericytes?
Responda
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Found at fenestrated capillaries
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Found at continuous capillaries
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Serve as a stem or progenitor cell population
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found in the basement membrane
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sustain the blood brain barrier
Questão 6
Questão
What is true about Purkinje fibers?
Responda
-
They are found in the subendocardial layer of the heart
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They are involved in slow conduction
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They are associated with the contractile muscle cells
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They have relative refractory
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They are found in the myocardium
Questão 7
Questão
Where is the largest change in pressure?
Responda
-
arterioles
-
small arteries
-
capillaries
-
venules
-
aorta
Questão 8
Questão
Which of the following is/are true about lymphatic vessels?
Responda
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Large lymphatic vessels have more smooth muscle than large veins
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Medium lymphatic vessels have more smooth muscle than medium veins
-
Large lymphatic vessels have valves
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Lymphatic capillaries have valves
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Lymphatic capillaries have smaller lumen than blood capillaries
Questão 9
Questão
Which of the following is correct about blood volume?
Responda
-
Most of the blood is in venous return
-
The skeletal muscles is the tissue with the most blood
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The smallest amount of blood will be in cardiac circulation
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The brain has the greatest share of blood
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Blood contains most of the water content of our bodies
Questão 10
Questão
Which of the following have the greatest resistance to blood flow?
Responda
-
arteries and arterioles
-
capillaries and venules
-
Aorta and large arterioles
-
Large arterioles and large veins
-
None of the above
Questão 11
Questão
Which of the following is true?
Responda
-
Pulsatile flow can be found at the capillaries
-
Patent ductus occurs more often in males
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Diastolic murmurs come from stenoses of any of the valves
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Systole of ventricles and atria can overlap
-
Cardiac output is determined by heart rate x (EDV-ESV)
Questão 12
Questão
Which of the following things is/are true?
Responda
-
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
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Contraction of the heart starts at the apex
-
Fast response of the heart has a relative refraction period
Questão 13
Questão
Which of the following is true
Responda
-
Veins have thicker tunica media
-
The tunica intima is thin in both veins and arteries, is elastic
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The tunica externa is fibrous and loose
-
The tunica adventitia is thicker in veins than arteries
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The tunica media has smooth muscle cells
Questão 14
Questão
Which of the following is true
Responda
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Turbulence is typically associated with narrowing from blockage
-
Laminar flow is fastest at the periphery
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Vessels in parallel have faster flow than vessels in series
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Small changes in radius result in large changes in resistance and flow
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Resistance and flow have an inverse relationship
Questão 15
Questão
What are some expected effects of exercise on the heart?
Responda
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Increased venous return
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Increased cardiac output
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Reduced blood flow to other areas, skeletal muscle prioritized
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Increased parasympathetic vasoconstriction
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Localized vasodilation to selectively decrease peripheral resistance to increase flow
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