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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Biology => Topic started by: itsdanny on June 11, 2012, 06:45:03 pm

Title: Hi, quick question about reflex arcs
Post by: itsdanny on June 11, 2012, 06:45:03 pm
Regarding: Here
That is a monosynaptic reflex arc? At first, I thought it did involve connecting neurons, hence a polysynaptic reflex arc although that is wrong. Observing a diagram, how do you distinguish if it could of a monsynaptic reflex arc or the latter? Just count how many synapses there are? lol

Cheers,
Title: Re: Hi, quick question about reflex arcs
Post by: Daenerys Targaryen on June 11, 2012, 07:42:34 pm
monosynaptic reflex arc, whats that? lol
Title: Re: Hi, quick question about reflex arcs
Post by: duquesne9995 on June 11, 2012, 07:45:09 pm
a reflex arc that has one synapse
probably don't need to know too much about it....stop adding things that we have to know! :P
OP: yeh just count the number of synapses
Title: Re: Hi, quick question about reflex arcs
Post by: Daenerys Targaryen on June 11, 2012, 07:48:50 pm
so sensory straight to a motor, skipping and interneuron?
Title: Re: Hi, quick question about reflex arcs
Post by: pi on June 11, 2012, 07:55:12 pm
Doesn't have to be one synapse...

Common example:

(http://www.vetmed.vt.edu/education/Curriculum/VM8054/Labs/Lab9/IMAGES/DRAW05.JPG)
Title: Re: Hi, quick question about reflex arcs
Post by: kensan on June 11, 2012, 07:58:29 pm
so sensory straight to a motor, skipping and interneuron?
yeah i was taught it as a reflex arc, where your brain doesn't process it. Like the knee jerk test at the doctors.
Title: Re: Hi, quick question about reflex arcs
Post by: duquesne9995 on June 11, 2012, 08:03:21 pm
knee jerk reaction is an example of monosynaptic reflex arc
and there are other ones that are polysynaptic reflex arcs (like VegemitePi's image)
But in both cases, they are reflex arcs, so both are automatic (involuntary) responses with no conscious control
*just checked biozone :)
Title: Re: Hi, quick question about reflex arcs
Post by: Daenerys Targaryen on June 11, 2012, 08:17:28 pm
sweet as :)