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A number of different kinds of signals are responsible for the coordination and regulation of systems in humans - VCE - SSCE Biology - Question 6 - 2006 - Paper 1

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A number of different kinds of signals are responsible for the coordination and regulation of systems in humans. Consider the following model of one of these systems... show full transcript

Worked Solution & Example Answer:A number of different kinds of signals are responsible for the coordination and regulation of systems in humans - VCE - SSCE Biology - Question 6 - 2006 - Paper 1

Step 1

For each point, name the kind of signalling molecule that would act and the kind of cell that produced the signalling molecule.

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Answer

Signalling moleculeType of cell producing the molecule
point RHormoneEndocrine cell
point SNeurotransmitterNeuron

Step 2

Explain why such an arrangement is beneficial to a control system.

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Answer

In many nervous control systems, a large network of cells is involved. This arrangement ensures that signals can be rapidly transmitted across different regions of the body, allowing for quicker responses to stimuli.

Furthermore, the interplay between various signalling molecules, such as hormones and neurotransmitters, allows for a refined and precise regulation of physiological processes.

Inhibitory signals can prevent overactivity, creating balance within the system which is critical for maintaining homeostasis. For example, when one set of signals promotes an action, the presence of inhibitory signals can regulate that action, avoiding potential chaos within the system.

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