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NEET UG BIOLOGY MCQ: LOCOMOTION AND MOVEMENT
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Assertion (A): The myosin rich zone called A-band maintains its length during sarcomere contraction
Reason (R): The length of I-band remains the same during muscle contraction.
Reason (R): The length of I-band remains the same during muscle contraction.
View answer and explanation
Correct option: C
If A is true, but R is false
Option C (If A is true, but R is false) is correct because the A-band's length remains constant during contraction, while the I-band shortens.
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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.