6215178
Beschreibung
Quiz von Nada Medhat, aktualisiert more than 1 year ago
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Erstellt von Nada Medhat
vor mehr als 7 Jahre
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Frage 1
Frage
1) Characters of Local potential:
Antworten
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A) Cannot be graded.
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B) Followed by ARP
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C) Associated with decremental conduction.
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D) Cannot be summated.
Frage 2
Frage
2) Alactic oxygen debt:
Antworten
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A) Uses greater amount of O2
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B) Used to replenish ATP stores
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C) Takes 1 hour or more
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D) All of the above
Frage 3
Frage
3) Moderate training, long duration swimming:
Antworten
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A) Increase number of capillaries.
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B) Increase myoglobin.
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C) Increase number of mitochondria.
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D) All of the above.
Frage 4
Frage
4) Isotonic Contraction:
Antworten
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A) Tension is constant.
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B) Muscle length decreases.
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C) Mechanical efficiency is Zero.
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D) A + B.
Frage 5
Frage
5) Smooth muscle Contraction:
Antworten
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A) Needs Calmodulin.
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B) Has Low ATPase activity
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C) At first, Tension increases then decreases.
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D) All of the above.
Frage 6
Frage
6) Nerve Excitability is increased by:
Antworten
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A) Hyperkalemia
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B) Hypercalcemia
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C) Hyponatremia
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D) A + C.
Frage 7
Frage
7) During rest, Voltage gated Na channels:
Antworten
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A) m gate close, h gate close.
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B) m gate close, h gate open
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C) m gate open, h gate open
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D) n gate open.
Frage 8
Frage
8) Skeletal muscle contraction:
Antworten
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A) Ca binds to Troponin T
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B) Bending of Cross bridges donot need ATP.
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C) A band shortens
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D) Ca release from SR.
Frage 9
Frage
9) Smooth muscle contraction is enhanced by:
Antworten
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A) Acetyl choline
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B) Progesterone
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C) Norepinephrine
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D) A + B
Frage 10
Frage
7) All are characteristics of single unit smooth muscle except:
Antworten
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A) Unstable RMP.
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B) Spontaneous electric activity
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C) Nonrhythmic
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D) Obey all or None law
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