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During muscle contraction...

During muscle contraction

A

Cross bridges are formed when the energized myosin head attaches to myosin binding site on actin

B

The Z-lines are drawn towards each other

C

`Ca^(2+)` concentration in the cytosol increases

D

The thick filaments slide over the thin filaments

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Go through the following statements During muscle contraction, the width of A-band remains constant while I-band shortens. During muscle contraction, the Ca^(2+) released from the SR bind to the troponin component of thin filament The process of muscle contraction is faster in smooth muscle as they have a well developed sarcoplasmic reticulum. The red muscle fibres have abundant mitochondria, low glycogen and poorly formed sarcoplasmic reticulum.

Which of the following statements about the mechanism of muscle contraction are correct ? (i) Acetylcholine is released when the neural signal reaches the motor end plate. (ii)Muscle contraction is initiated by a signal sent by CNS via sensory neuron. (iii) During muscle contraction, isotropic band gets elongated (iv) Repeated activation of the muscles can lead to lactic acid accumulation.

Which of the following statements about the mechanism of muscle contraction are correct ? (i) Acetylcholine is released when the neural signal reaches the motor end plate. (ii) Muscle contraction is initiated by a signal sent by CNS via sensory neuron. (iii) During muscle contraction, isotropic band gets elongated. (iv) Repeated activation of the muscles can lead to lactic acid accumulation.

Which of the following is incorrect regarding muscle contraction?

The role of calcium in muscle contraction is :

Following muscle contraction in response to a stimulus, the muscle temporarily cannot respond. This is known as:

Define the following : Threshold stimulus in muscle contraction

Which is true for muscle contraction :-

AAKASH INSTITUTE ENGLISH-TEST 7-Exercise
  1. Type of joint present between wrist bones is also present between

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  2. Select the incorrect match.

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  3. During muscle contraction

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  4. Common feature of frog and cockroach is

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  5. Choose the incorrectly matched pair.

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  6. Damage to which cells of gastric glands can cause anemia?

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  7. The following is a list of animals and their excretory organs. Choose ...

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  8. Jaundice is a disorder of -

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  9. Read the following statements and select the correct option br Stateme...

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  10. identify the mismatched option wrt human

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  11. In normal respiration, contraction of which of the following muscles l...

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  12. Cellular respiration includes

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  13. Which of the following regions of brain is incorrectly paired with its...

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  14. As compared to sympathetic system, stimulation from parasympathetic sy...

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  15. Select the set of animals which are homeotherms.

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  16. Human eye contains cone cells which respond to red green and blue ligh...

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  17. Which one of the following statements in regard to the excretion by th...

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  18. Part of nephron where maximum reabsorption of nutrients occur is lined...

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  19. Select the option having correct set of sensory type of cranial nerves...

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  20. Select the disease caused by both hyposecretion as well hypersecretion...

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