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Upon stimulation of skeletal muscles, ca...

Upon stimulation of skeletal muscles, calcium is immediately made available for binding to troponin from

A

bone

B

blodd

C

lymph

D

sarcoplasmic reticulum

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The correct Answer is:
D
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On stimulation of skeletal muscle, calcium is immediately made available for binding to troponin from

During contraction of skeletal muscle Ca^(2+) bind to

[A] : Upon stimulation of a muscle cell, cal- cium ions (Ca^(++)) are released from the sar- coplasmic reticulum. [R]: In reacting with a protein complex, Ca^(++) unmasks myosin binding sites on the ac-tin filaments.

Calcium is important in skeletal muscle contraction because it

Cardiac muscles are different from skeletal muscles as they are

The order in contraction in muscle in (a)Generation of action potential in muscle fibres (b)Release of neuro transmitter at motor c) Formation of cross linkages between actin and myosin (d) Release of Ca^(2+) and binding to troponin C

Store house of calcium ions in the skeletal muscle is

Energy made available in catabolic reactions is immediately stored in

Assertion : - Ca^(++) play an important role in the muscle contraction. Reason :- Calcium bind with a subunit of troponin on actin filaments and thereby remove the masking of active sites for myosin.

Assertion: Calcium required for skeletal muscle contraction Reason: Calcium influx releases acetylcholine at neuromuscular junction.

TRUEMAN BIOLOGY-LOCOMOTION AND MOVEMENTS -Multiple choice question
  1. Study of following a. The accumulation of pyruvic acid in the muscle...

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  2. It is an outcome of irregularties in metabolism of nitrogenous waste

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  3. Upon stimulation of skeletal muscles, calcium is immediately made avai...

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  4. This facial bone is unpaired

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  5. The longest bone of the human body is

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  6. Skeletal muscles are controlled by

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  7. Which one of the following is wrongly matched?

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  8. The generation of excitation-contraction coupling involves all the fol...

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  9. In human beings the cranium is formed by

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  10. The number of occipital condyles in man is/are

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  11. Match the following and choose the correct option {:("Types of synov...

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  12. The ellipsoidal joint is found in

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  13. Which of the following statements about the mechanism of muscle contra...

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  14. Actin binding sites are located over

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  15. The scapula is a large triangular flat bone situated in the dorsal par...

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  16. The coxal of the pelvic girdle is formed by the fusion of

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  17. Which one of the followign pairs of substances and function is not cor...

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  18. Read the following statements (i) In cardiac muscle fibres sacroplas...

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  19. Select the wrong match

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  20. Read the following statements (i) In adults most of the RBCs are pro...

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