1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation.
A
X=12, Y=5

  
True ribs are attached dorsally
to vertebral column and sternum
on the two ends
B
X=24, Y=2

The true ribs are dorsally attached
to vertebral column but are free on
ventral side
C
X=24, Y=12


True ribs are dorsally attached
to vertebral column but are free on
ventral side
D
X=12, Y=7


True ribs are attached dorsally to
vertebral column and ventrally to
the sternum
2
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.
A
Calcium
B
Magnesium
C
Sodium
D
Potassium
3
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
Osteoporosis, an age-related disease of skeletal system, may occur due to
A
immune disorder affecting neuromuscular junction leading to fatigue
B
high concentration of Ca++ and Na+
C
decreased level of estrogen
D
accumulation of uric acid leading to inflammation of joints.
4
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
Lack of relaxation between successive stimuli in sustained muscle contraction is known as
A
tetanus
B
tonus
C
spasm
D
fatigue.
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