5527733
Frage 1
Frage
Which of the following is a right to left shunt in the fetus?
Antworten
-
ductus arteriosus
-
foramen ovale
-
foramen pulmonale
-
ductus venosus
-
portal sinus
Frage 2
Frage
Which of the following processes are involved in the early formation of the heart?
Antworten
-
cranial-caudal folding
-
lateral body wall folding
-
ventral-dorsal folding
-
loop to the right
-
loop to the left
Frage 3
Frage
When does the partitioning of the atria and ventricles begin?
Antworten
-
7 days
-
28 days
-
35 days
-
11 days
-
24 days
Frage 4
Frage
Which of the following are involved in the tetrology of Fallot?
Antworten
-
pulmonary stenosis
-
left ventricular hypertropy
-
overriding aorta
-
total obstruction of aorta
-
right ventricular hypertropy
Frage 5
Frage
What is true about pericytes?
Antworten
-
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
Frage 6
Frage
What is true about Purkinje fibers?
Antworten
-
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
Frage 7
Frage
Where is the largest change in pressure?
Antworten
-
arterioles
-
small arteries
-
capillaries
-
venules
-
aorta
Frage 8
Frage
Which of the following is/are true about lymphatic vessels?
Antworten
-
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
Frage 9
Frage
Which of the following is correct about blood volume?
Antworten
-
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
Frage 10
Frage
Which of the following have the greatest resistance to blood flow?
Antworten
-
arteries and arterioles
-
capillaries and venules
-
Aorta and large arterioles
-
Large arterioles and large veins
-
None of the above
Frage 11
Frage
Which of the following is true?
Antworten
-
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)
Frage 12
Frage
Which of the following things is/are true?
Antworten
-
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
Frage 13
Frage
Which of the following is true
Antworten
-
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
Frage 14
Frage
Which of the following is true
Antworten
-
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
Frage 15
Frage
What are some expected effects of exercise on the heart?
Antworten
-
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
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