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Muscles

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Muscles

Postby rosebud » Wed Apr 12, 2006 9:17 am

Q. Outline the sequence of events that occurs between the stretching of muscle spindles and the increased contraction of the brachialis muscle.

(8 marks)

:D
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Postby canalon » Wed Apr 12, 2006 3:23 pm

Do your homework!

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Postby rosebud » Wed Apr 12, 2006 6:12 pm

I'm not asking for an answer. I just want some ideas that I could include. I already have a rough idea of what to put.
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Postby canalon » Wed Apr 12, 2006 9:25 pm

Not that it is exactly clear from your question, he!

What ideas do you have? There will probably be plenty of people to complete any missing step.
Patrick

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Postby rosebud » Thu Apr 13, 2006 9:15 am

: Muscle spindles are specialised fibres and they act as receptors to the amount of stretch in a muscle.
: As they become stretched , spindles send impulses via sensory neurones to the spinal cord.
: These synapse with motor neurones that lead back to the muscles (effectors)
: At the muscles these impulses cause the brachialis muscle to contract and other muscles to relax.

: Muscle spindle reflex- one muscle contracts and the other relaxes
: The relaxed muscle is stretched and the muscle spindle is stimulated.

: Muscle spindle reflex- stretched muscle contracts and the other relaxes
: Relaxed muscle is stretched and its muscle spindle stimulated
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