Physiology MCQ
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a. Phase 0 is caused by Ca ++ influx ❎
By Na influx
b. Phase 1,cl influx occurs✅
C. Phase 3,start by activate of L type Ca ++ channels ❎
BY In activate L type Ca ++channels and activate K+ channles
d. Phase 4 is hyperpolariazation❎
RMP
الاجابهb
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a. Is located in left atrium ❎
In the right atrium
b. has arrythm 100 /m❎
60/min
c.is the only electrical connection between atria and ventricle ✅
d. is the normal pace maker ❎
Normal pace maker SA nod
الاجابه c
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Mitral valve has two cusps✅
كل الvalveعندها3 cusps ما عدا الmitral valve
Heart is composed of two functional syncitia ✅
Rt ventricle is low pressure pump ✅ويسمى أيضا
Volum pump
أما الleft ventricle
"high pressure pump
The main function of atria is to pump blood ❎
The main function of atria is blood receve wall not pump blood
70%من الدم ينتقل من الatria للventricle عن طريق الجاذبيه لذلك الatria يضخ30%فقط
الوظيفه الاساسيه للatriaتخزين الدم إلى أن يضخ إلى الventricle
السؤال بطريقه تانيه
Atria is not essintional for life
إما الventricle is essitional for life
الاجابه D
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The platelet number is normal but has defect in their function , name this disease:
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………. is a proteolytic enzyme , it removes the remaining unneccessary blood clot
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The intrinsic pathway of blood coagulation begins with the activation of;
