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 Combined Science: Trilogy (8464) — Biology — Higher · 4.5.2
Revise AQA GCSE Combined Science: Trilogy (8464) — Biology — Higher specification point 4.5.2, The human nervous system, 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 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.
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.