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Endocrine and nervous coordination comparison
The human body has two coordination systems: the nervous system and the endocrine system. Two students measured human reaction time using a falling metre rule.
Student B's reaction is coordinated by the nervous system. Give two ways that coordination by the endocrine system is different from coordination by the nervous system.
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Marking points
- 1 Compares transport through blood with transport via neurones.
- 2 Compares chemical transmission with electrical impulses/signals.
- 3 States that endocrine coordination is slower.
- 4 States that endocrine effects last longer.
Full-mark answer
1. Endocrine signals are chemicals carried in the blood rather than electrical impulses along neurones. 2. Endocrine responses are slower but their effects last longer.
Why this answer loses marks
Hormones act differently from nerves.
This is too vague; name two paired differences in route, signal type, speed or duration.