Eduqas A-Level Psychology A290QS
Biological Approach
Psychodynamic Approach
Behaviourist Approach
Cognitive Approach
Positive Approach
Comparing the Five Approaches
Core Studies in Social and Developmental Psychology
Planning Psychological Research
Data Handling, Statistics and Mathematical Skills
Evaluating and Validating Research
Personal Investigations and Novel Research Scenarios
Addictive BehavioursAddictive
Autistic Spectrum BehavioursAutistic spectrum
Bullying BehavioursBullying
Criminal BehavioursCriminal
SchizophreniaSchizophrenia
StressStress
Controversies in Psychology
Stress
Biological explanations: Adrenaline and Evolutionary adaptation
- 3 things to know
- Component 3 Applications
Overview
Recall questions on Adrenaline and Evolutionary adaptation.
What you need to know
Answer each one before you reveal it.
How is blood flow redistributed during the adrenaline response?
What did Cannon (1932) call this response, and why?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Where is adrenaline released from, and what triggers its release?
Model answer
From the adrenal medulla, stimulated by the sympathetic branch of the autonomic nervous system when a threat is detected.
- 2
What does adrenaline do to the heart and circulation?
Model answer
It increases heart rate and the force of contraction, raising blood pressure and cardiac output.
- 3
How is blood flow redistributed during the adrenaline response?
Model answer
Vessels supplying the gut and skin constrict while those supplying skeletal muscle dilate, directing blood to where it is needed for physical action.
- 4
How does adrenaline make energy available?
Model answer
It stimulates the breakdown of stored glycogen into glucose, raising blood sugar so that muscles have fuel.
- 5
What did Cannon (1932) call this response, and why?
Model answer
The fight-or-flight response, because it prepares the body either to confront a threat or to escape from it.
- 6
Why is the adrenaline response so much faster than the cortisol response?
Model answer
It is triggered directly by nerve impulses reaching the adrenal medulla, whereas the cortisol response depends on a slower chain of hormones travelling in the bloodstream.
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