Which features of a table, chart or graph help identify the quantities shown in nervous-system data?
Headings, labels, scales, keys and units.
AQA GCSE Biology - Foundation (8461) · 4.5.2.1
Revise AQA GCSE Biology - Foundation (8461) specification point 4.5.2.1, Structure and function, with free active-recall flashcards. Flip through the set or review every question and answer below.
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Which features of a table, chart or graph help identify the quantities shown in nervous-system data?
Headings, labels, scales, keys and units.
How can comparing nervous-system data support a conclusion?
Comparisons can reveal patterns that support a conclusion grounded in the data.
How should numerical reaction-time data be plotted on a graph?
Use appropriately labelled axes and scales.
What should be recorded when reading a reaction time from a graph?
The numerical value and its unit.
What correspondence must be preserved when reading or plotting reaction-time data?
Each reaction time must remain matched to its condition or measurement.
What is a reflex action?
A rapid, automatic response to a stimulus that occurs without conscious decision-making.
What are the five main parts of a simple reflex arc, in order?
What does the receptor do in a reflex arc?
It detects the stimulus.
What does the sensory neurone do in a reflex arc?
It carries the impulse toward the CNS.
What does the relay neurone do in a reflex arc?
It passes the impulse within the CNS.
What does the motor neurone do in a reflex arc?
It carries the impulse away from the CNS.
What does the effector do in a reflex arc?
It produces the response.
What are the two types of effector in a reflex action?
Muscles and glands.
What two structures make up the central nervous system (CNS)?
The brain and spinal cord.
What is the pathway from a stimulus to a response through the CNS?
Stimulus → receptor → sensory neurone → CNS, which processes information and coordinates a response → motor neurone → effector → response.
What are the two types of effectors, and what do they do?
Besides responses to surroundings, what does the CNS coordinate?
Behaviour.
What characterises a reflex response?
It is rapid and automatic, occurring without waiting for a conscious decision.
How can reflex responses help protect the body?
They can help protect it from injury.