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NEET UG BIOLOGY MCQ: LOCOMOTION AND MOVEMENT
1
Medium
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Understanding
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chances of fractures.
Reason (R): Common cause of osteoporosis in increased levels of estrogen.
In the light of the above statements, choose the most appropriate answer from the options given below:
Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chances of fractures.
Reason (R): Common cause of osteoporosis in increased levels of estrogen.
In the light of the above statements, choose the most appropriate answer from the options given below:
View answer and explanation
Correct option: D
(A) is correct but (R) is not correct
Option D ((A) is correct but (R) is not correct) is correct because osteoporosis is characterized by decreased bone mass, but it is caused by decreased, not increased, levels of estrogen.
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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.