Biology 2nd Year
MCQs
Chapter No.2
Support and Movement
51. In adults, the no. of vertebrae is
- 33
- 25
- 26
- 30
Answer:
33
52. Elbow joint is of what variety
- Synovial
- Ball and socket
- Pivot
- Condylar
Answer:
Synovial
53. The joints of skull bones are called
- Skull joints
- Cranial joints
- Satures
- Sutures
Answer:
Sutures
54. Which one of following contain tropo myosin
- Myosin filaments
- Actin filaments
- z-lines
- I-band
Answer:
Actin filaments
55. The no. of antagonistic muscles is
- 350
- 700
- 650
- 1300
Answer:
650
56. For antagonism which is true
- Both muscles move bone in same direction
- When one relaxes others contraction is going on
- One contracts when others contraction ends
- Both may be present on one bone
Answer:
When one relaxes others contraction is going on
57. In tetany which responsible for twitching
- Hypo nateremia
- Hypercalclmia
- Hypocalcemia
- Hyperkalemia
Answer:
Hypocalcemia
58. Detachment of myosin head and actin in rigor mortis occurs due to
- Stored ATP in body
- Hypercalcemia
- Autolysis in body
- Hyperactivity of mitochondria
Answer:
Autolysis in body
59. The type of muscles which have free ion pores between adjacent cells
- Skeletal muscles
- Cardiac muscles
- Smooth muscles
- all
Answer:
Cardiac muscles
60. Brachialis and biceps are
- Antagonists
- Synergists
- Antagonists & Synergists
- None of these
Answer:
Synergists
