If not for large quantities of Ca defusing into the cardiac cells the contraction would be
Anonymous Quiz
32%
Increased
43%
Reduced
12%
Remain constant
13%
No change
❤2
About the pacemaker potential, all the following is true EXCEPT:
Anonymous Quiz
74%
Its amplitude is –80 to –90 mV
9%
It is unstable
11%
The firing level occurs at about –40 mV
6%
Its slope is decreased by increased permeability to K+
❤2
Coronary arteries are branch of
Anonymous Quiz
31%
Arch of aorta
46%
Ascending aorta
8%
Descending aorta
15%
Non of the above
❤2
The pace maker of conducting system. Of the heart is
Anonymous Quiz
12%
Purkinje fibers
7%
Atrioventricular bundle
6%
Atrioventricular nodes
75%
SA node
❤3
the rythmicity of S-A node ?
Anonymous Quiz
86%
90-120 times/min
3%
35-40 times/min
10%
60-100 times/min
1%
25-40 times/min
❤3
all of the following are from properties of cardiac muscle EXCEPT ?
Anonymous Quiz
5%
Excitability
83%
Extensibility
9%
autorythmicity
3%
contractility
❤2
the resting membrane potetial of cardiac muscle is ............?
Anonymous Quiz
66%
-85mv
27%
-55mv
4%
85mv
3%
55mv
❤2
the main channel responsible of depolarization of phase 0 is...........?
Anonymous Quiz
14%
L type voltage gated Ca channel
71%
fast sodium channel
7%
slow potassium channel
8%
T type voltage gated Ca channel
❤2
it is the phase which in the membrane remains depolarized due to balance of charge moving into and out of the cell ?
Anonymous Quiz
26%
Phase 0
13%
Phase 1
50%
Phase 2
11%
Phase 3
❤2
the absolute refravtory period means a very strong stimuli can cause excitation ?
Anonymous Quiz
33%
TRUE
67%
FALSE
❤2
the absolute refractory period lasts during which phase ?
Anonymous Quiz
14%
rapid depolarization
58%
plateau
11%
1st rapid repolarization
16%
compelete repolarization
❤2
السلام عليكم 💜
دول أسئلة فسيولوجي على excitability and auto-rhythmicity of the heart
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ربنا معاكم يا أبطال💜
دول أسئلة فسيولوجي على excitability and auto-rhythmicity of the heart
نركز احنا وبنحل🐵
واللي عنده تعقيب او معترض على حاجة في الأسئلة يبعت هنا ع البوت (@Physical_Therapy_TBot)
ربنا معاكم يا أبطال💜
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❤26
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Dr. Nagi
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Medical Physiology
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Dr. Nagi
https://www.youtube.com/playlist?list=PLXpwRy1kGVZLlWeyt9N8OVmsrRN7F_rkL
Dr. Ahmed Mostafa
https://www.youtube.com/playlist?list=PLJR3YnsG3vkTMVtMvM6w0wTPSRA2lxKq-
Dr. Mohamed Fayez
https://youtube.com/playlist?list=PLLShXxg1izoiQdtkrbNhUJz5rjhf2hBVD
Nerd
https://www.youtube.com/playlist?list=PL5gt9J3j4ldaiKDy427XVe55yZdITtc5A
Med X 5
https://youtube.com/playlist?list=PL_zCLla655lgJTP3Hs-rUTg5x_PWSXj9i
Dr. Lashin Saad
https://youtube.com/playlist?list=PLRf11jWM6AkPU67rNEpiO-B3uambPjVe0
Dr. Mohamed Khayrat
https://youtube.com/playlist?list=PLtLU2vBltq6NF3RBxB0RuTPwDdgbofCSr
Kasr Ainy
https://www.youtube.com/playlist?list=PLsXyDxy7pcgpeGEiFA9g-CrabPyLw4cr9
Medical Physiology
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© Channel
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