6 ) Concerning ATP in skeletal muscle contraction :
Anonymous Quiz
25%
a ) ATP is necessary for Ca " release from the sarcoplasmic reticulum .
50%
b ) ATP is necessary for detachment of cross bridges during muscle contraction .
13%
c ) Increased cycling of cross - bridges reduces ATP consumption .
12%
d)Less ATpconsumedduringcontraction of fasttwitch skeletalmuscle thanduring cardiacmusclecontraction
7 ) During the cross - bridges cycle for activation of skeletal muscle contraction :
Anonymous Quiz
24%
a ) Ca " combines with actin to expose an actin binding site .
45%
b ) ATP is used to cause myosin cross - bridges to release from the actin molecules .
20%
c ) The actin filament shortens to reduce the length of the sarcomere .
10%
d)Ca ++ combines with calmodulin .
22) In skeletal muscles , all the following is true except :
Anonymous Quiz
13%
a ) Tropomyosin is found in the thin filaments
7%
b ) Myosin is found in the thick filaments .
24%
c ) The lateral sacs of sarcoplasmic reticulum are rich in Ca ++
56%
d ) Troponin C molecules bind Ca ++ Energy from ATP is not required for muscle relaxation .
Which one of the following factors increase the excitability of skeletal muscles
Anonymous Quiz
29%
High calcium ion concentration in the extracellular fluid.
60%
Low calcium ion concentration in the extracellular fluid
6%
Neuromuscular blockers.
4%
Local anathetic drags
Which one of the following factors decrease the excitability of skeletal muscles
Anonymous Quiz
57%
High calcium ion concentration in the extracellular fluid.
33%
Low calcium ion concentration in the extracellular fluid
2%
Anticholinestrase enzyme
8%
Cholinomimetic drugs
Which one of the following factors would increase the mechanical efficiency of the muscle
Anonymous Quiz
7%
Excessive cooling of the muscle.
20%
Muscle fatigue.
61%
Training.
13%
Isometric contraction.
Which one of the following factors would decrease the mechanical efficiency of the muscle
Anonymous Quiz
12%
When carbohydrates is the main source of energy.
75%
Muscle fatigue.
7%
Training.
5%
Isotonic contraction.
Low calcium ion concentration in the extracellular fluid increase the excitability of muscle cells due to
Anonymous Quiz
18%
Hyperpolarization of muscle cells
45%
Increase the membrane permeability to sodium
20%
Increase the membrane permeability to potassium
18%
Increased duration of action potentials
Increases excitability of muscle cells is due to:
Anonymous Quiz
44%
High extracellular calcium
40%
low extracellular calcium
10%
spinal anesthesia
6%
low extracellular potassium
ุฃุณุฆูุฉ ูุณููููุฌู ุนูู ุงู skeletal muscles
ููุงูุนุงุฏุฉ ูุง ุณุงุฏุฉ ๐
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ููุงูุนุงุฏุฉ ูุง ุณุงุฏุฉ ๐
ุงูุณุคุงู ุงููู ู ุด ุชุจุนู ุงุนู ูู skip
ูุงูุณุคุงู ุงููู ู ุงุชููู ููุด ุฃู ุนูุฏู ุงุนุชุฑุงุถ ู ุฅุฌุงุจุชู
ุชูุฏุฑ ุชููุฑูุง ู ุงูุจูุช ุจุชุงุนูุง๐ซถ
(@Physical_Therapy_TBot)
ุฃุชู ูู ุชุฏุนูููุง ูุง ุดุจุงุจ ุนูุดุงู ุงูุญุงูุฉ ุตุนุจุฉ ูุงููู ๐ฅฒ๐
ูุจุงูุชูููู ููุฌู ูุน๐ฉท
๐ฅฐ4๐2
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ููุฌุ
Anonymous Poll
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ู
ุนุงู.
10%
ูุง.
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ูู ูุง ุดุจุงุจ ุงููู ุจูุงุฎุฏ professional behaviour ูู ุฌุงู
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ูุจุนุช ุน ุงูุจูุช:
@Physical_Therapy_TBot
ูุจุนุช ุน ุงูุจูุช:
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โค1
Physiology Magdy Sabry Respiratory.pdf
13.1 MB
Respiratory
Physiology Magdy Sabry Special Senses.pdf
10.8 MB
Special Senses
โค2
โช Physiology - Dr. Magdy Sabry
๐ฟ Topics: CVS, Blood, Special senses, Endocrine, GIT, Respiratory and ANS.
-> Channel
๐ฟ Topics: CVS, Blood, Special senses, Endocrine, GIT, Respiratory and ANS.
-> Channel
๐1