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NEET UG BIOLOGY MCQ: LOCOMOTION AND MOVEMENT
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Understanding
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Which of the following statements about the striated muscles is false?
I. Thick filaments in the 'A' band are also held together in the middle of this band by a thin fibrous membrane called 'M' line
II. In the centre of each 'I' band is an elastic fibre called 'Z' line which bisects it
III. The thin filaments are firmly attached to the 'Z' line
IV. This central part of thick filament, not overlapped by thin filaments is called the 'H'
I. Thick filaments in the 'A' band are also held together in the middle of this band by a thin fibrous membrane called 'M' line
II. In the centre of each 'I' band is an elastic fibre called 'Z' line which bisects it
III. The thin filaments are firmly attached to the 'Z' line
IV. This central part of thick filament, not overlapped by thin filaments is called the 'H'
View answer and explanation
Correct option: D
None of these
Option D (None of these) is correct because all the statements provided about striated muscles are true.
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bind …A… in skeletal muscles and leads to the exposure of binding site for …B… on the filament …C…
Identify A, B and C, so as to complete the given statements Which is not the function of endoskeleton? Read the following statements about human skeleton system and choose the option that correctly states them true (T) and false (F).
a. Total number of bones in hind limbs are 60
b. There are 26 bones in vertebral column of an adult man
c. There are 2 pairs of vertebrochondral ribs
d. Axial skeleton is comprised of 80 bones
Assertion : Muscle contraction force increases
with rise in strength of stimulus.
Reason : This is due to increased contraction of
individual muscle fibres with increase in stimulus
strength.
Identify A, B and C, so as to complete the given statements Which is not the function of endoskeleton? Read the following statements about human skeleton system and choose the option that correctly states them true (T) and false (F).
a. Total number of bones in hind limbs are 60
b. There are 26 bones in vertebral column of an adult man
c. There are 2 pairs of vertebrochondral ribs
d. Axial skeleton is comprised of 80 bones
Assertion : Muscle contraction force increases
with rise in strength of stimulus.
Reason : This is due to increased contraction of
individual muscle fibres with increase in stimulus
strength.