Tetany is the rapid spasm in muscles due to:

(1) High Ca+2 in body fluid                

(2) Low Ca+2 in body fluid

(3) High uric acid in body fluid           

(4) High urea in blood

Subtopic:  Muscle Contraction: Other Considerations |
 87%
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Read the following A to D statements and select the option that contains both correct statements:
A. Z-line is present in the centre of the light band.
B. Thin filaments are firmly attached to the M-line
C. The central part of thick filaments, not overlapped by thin filaments is called Z-band
D. Light band contains only thin filaments
(1) A and D           

(2) B and C             

(3) A and C                       

(4) B and D

Subtopic:  Skeletal Muscle: Sarcomere |
 81%
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ATPase of the muscle is located in:

(1) Actinin            

(2) Troponin         

(3) Myosin            

(4) Actin

Subtopic:  Skeletal Muscle: Myofilaments |
 88%
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Assertion  :       Muscle twitch is related with tetanus.

Reason    :     Tetanus is caused by many nerve impulses at a time.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Muscle Contraction: Other Considerations |
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Assertion  :       Extra oxygen consumption in human body is known as oxygen debt.

Reason    :     The extra oxygen is required by the body to oxidise the accumulated lactic acid produced during strenous exercise.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Muscle Contraction: Other Considerations |
 61%
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Assertion   :       Ball and socket joints are the most mobile joints.

Reason      :       Synovial fluid is present here.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Synovial Joint |
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Assertion   :       Arthritis or inflammation of a joint makes the joint painful.

Reason      :       Some toxic substances are deposited at the joint.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Synovial Joint |
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Assertion   :       Movement of body parts serves to change the body posture.

Reason      :       Body parts move in relation to body axis.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Introduction to Locomotion |
 52%
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Assertion   :       There are similarities between the locomotion of unicellular organisms and multicellular animal.

Reason      :       Ciliary, flagellar and amoeboid movement occur in unicellular organisms.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Introduction to Locomotion |
 54%
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Assertion  :       Triceps is said to be an extensor muscle for elbow joint.             

Reason     :     Triceps relaxes durings extension of forearm at the elbow joint.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Muscle Contraction: Other Considerations |
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