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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Biology => Topic started by: manniet on May 15, 2011, 11:56:08 am

Title: STIMULUS RESPONSE
Post by: manniet on May 15, 2011, 11:56:08 am: Could someone please help me out :)
Would I be able to do Pupil dilation as an example of Stimulus response model? If so, what could I write for the
Stimulus, Receptor, Control centre, effector, response?

Could i say Stimulus; low level of light, Receptor; sensory receptors in Retina?, control centre: ? response; pupils dilating (mention iris muscle?)
Title: Re: STIMULUS RESPONSE
Post by: scocliffe09 on May 15, 2011, 12:52:34 pm: Quote from: manniet on May 15, 2011, 11:56:08 am
Could someone please help me out :)
Would I be able to do Pupil dilation as an example of Stimulus response model? If so, what could I write for the
Stimulus, Receptor, Control centre, effector, response?

Could i say Stimulus; low level of light, Receptor; sensory receptors in Retina?, control centre: ? response; pupils dilating (mention iris muscle?)

Yep
Receptors are photoreceptors in retina. Control centre is sympathetic nervous system. Definitely mention iris smooth muscle dilating pupil to allow more light to enter the eye.
Title: Re: STIMULUS RESPONSE
Post by: HERculina on May 15, 2011, 01:43:37 pm: Quote from: scocliffe09 on May 15, 2011, 12:52:34 pm
Control centre is sympathetic nervous system.
hwo did you know that it was the sympathetic NS?
Title: Re: STIMULUS RESPONSE
Post by: manniet on May 15, 2011, 01:55:50 pm: Thankyou Scocliffe09!

Quote from: Hercules on May 15, 2011, 01:43:37 pm
Quote from: scocliffe09 on May 15, 2011, 12:52:34 pm
Control centre is sympathetic nervous system.
hwo did you know that it was the sympathetic NS?

I think it's because It's a reflex type action. Fight - flight response?
Title: Re: STIMULUS RESPONSE
Post by: lexitu on May 15, 2011, 01:56:52 pm: ^ Because it's exerting an excitatory rather than an inhibitory effect - exactly - fight or flight response type thing :)
Title: Re: STIMULUS RESPONSE
Post by: shinny on May 15, 2011, 02:03:51 pm: Quote from: Hercules on May 15, 2011, 01:43:37 pm
Quote from: scocliffe09 on May 15, 2011, 12:52:34 pm
Control centre is sympathetic nervous system.
hwo did you know that it was the sympathetic NS?

I assume more so because he's learnt it before. They wouldn't expect you to know in the exam and they'll give you enough background information to answer the question with.
Title: Re: STIMULUS RESPONSE
Post by: dou0014 on May 15, 2011, 08:21:08 pm: How much of chapter 7 do we really have to know. I have done a summary of the whole chapter, but theres a lot of crap on bacteria that I have never seen on a paper before.
Title: Re: STIMULUS RESPONSE
Post by: scocliffe09 on May 15, 2011, 09:11:44 pm: Quote from: dou0014 on May 15, 2011, 08:21:08 pm
How much of chapter 7 do we really have to know. I have done a summary of the whole chapter, but theres a lot of crap on bacteria that I have never seen on a paper before.
For each pathogen, know (at a minimum):
-basic structure and structural features, especially those which increase its chance of survival
-methods of replication
-an example of human disease caused by that pathogen
-whether we have treatments for the pathogen and what they might be (at a basic level)
For bacteria, know a bit more, e.g. what prokaryotes are etc...