A common connective tissue layer holding together the skeletal muscle bundles is
1. Aponeurosis
2. Fascia
3. Endomysium
4.Perimysium
Calcium, during muscle contraction binds with
1.Tropomyosin
2. TpC
3.TpI
4.TpT
Duration of one muscle twitch is
1. 0.1 seconds
2.1 second
3. 5 seconds
4.10 seconds
The length of this is reduced while the muscle contracts
1. sarcomere
2.I-Band
3.A-Band
4.H-Zone
Muscle fatigue is due to the accumulation of
1.carbon dioxide
2.lactic acid
3.creatine phosphate
4.none of the above
This about muscle fibres is true
1. for energy, they depend on anaerobic procedures
2.better adapted for slow sustained activities
3.myoglobin content is high
4.possess mitochondria in huge numbers
This happens in a contracted skeletal muscle fiber
1.A band vanishes
2.M line vanishes
3.H zone elongates
4. I band is steady
This is a feature of white muscle fibers
1.less sarcoplasmic reticulum
2.large number of blood vessels
3.utilized for performing work for longer durations
4.none of these
Where does the stimulation of muscle fibers by a motor neuron take place
1.myofibril
2.transverse tubules
3.sarcoplasmic reticulum
4. neuromuscular junction
White muscles are not used in this function
1.eyeball movement
2. sustained work at a slower pace for a prolonged period
3. fast flights of sparrows
4.strenuous and fast work for short duration of time