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Acetylcholine is …………….released at the …...

Acetylcholine is …………….released at the …………....

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Neurotransmitter, Synapses
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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.

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Perforin is released by :-

Read the following statements. Statement A: Post-ganglionic nerve fibres of sympathetic nervous system are adrenergic. Statement B: Acetylcholine decreases the heart rate but adrenaline increases it. Choose the correct option

The inhibin hormone is released by

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ICSE-STRUCTURE ORGANISATION IN ANIMALS -ANIMAL TISSUES-REVIEW QUESTIONS (FILL IN THE BLANKS)
  1. A tendon attaches a …………... to a…………....

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  2. Psedostratified epithelium lines the ………... while transitional epithli...

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  3. Dark bands of muscle fibres are made of the protein ------------while ...

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  4. Nerve impulses come to the cell body of a neuron along its ………….and go...

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  5. Lacunae of bones house …………. while lacunae of cartilages contain …………....

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  6. Tendons contain bundles of …………..fibres and rows of …………….cells betwee...

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  7. Epidermal cels rest on a non-cellular membrane called …………..

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  8. ……………. are the voluntary muscles of the body.

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  9. …………….. attaches bones to bones at the joints.

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  10. Blood platelets help in …………...

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  11. ……………., ……………...and ………….. are three basic components of connective ti...

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  12. collagen fibres are ………….while yellow fibres are ………………..

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  13. Bone matrix contains the protein ……………... while that of cartilage cont...

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  14. A compact long bone has number of …………….. systems arranged in concentr...

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  15. …………..blood cells help in blood clotting .

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  16. …………... and …………... agranulocytes are phagocytic in function.

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  17. The area between two Z lines is called a …………....

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  18. A band contain ……………. filaments while I contains ……………... filaments.

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  19. The impulse in a myelinated nerve fibres jump from one …………….to anothe...

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  20. Acetylcholine is …………….released at the …………....

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