BIOPSYCHOLOGY - AQA A LEVEL LATEST 2025 EXAM WITH QUESTIONS AND CORRECT
VERIFIED ANSWERS GRADEDA+ GUARANTEED 100% PASS
Divisions of the nervous system - (ANSWER)
The nervous system - (ANSWER)Specialised network of cells.
Internal communication system.
Electrical and chemical signals.
Two main functions:
1.To collect, process and respond to information in the environment.
2.To co-ordinate the working of different organs and cells in the body.
Central nervous system (CNS) - (ANSWER)brain
-Centre of conscious awareness.
-Outer layer - 'cerebral cortex' (3mm thick - teacosy!)
-Highly developed in humans.
-Two hemispheres
Spinal Cord
-Extension of the brain - passes messages to and from the brain
-Connects nerves to the PNS
-Responsible for reflex actions
Peripheral nervous system - (ANSWER)PNS transmits messages via millions of neurons (nerve cells) to
and from the CNS.
Consists of two divisions:
1.somatic nervous system
2. autonomic nervous system
somatic nervous system - (ANSWER)Controls muscle movement
, BIOPSYCHOLOGY - AQA A LEVEL LATEST 2025 EXAM WITH QUESTIONS AND CORRECT
VERIFIED ANSWERS GRADEDA+ GUARANTEED 100% PASS
Receives information from sensory receptors
Under CONSCIOUS CONTROL. (not in book)
Has sensory and motor neurons:
Sensory neurons - relay messages TO the CNS.
Motor neurons - relay messages FROM the CNS to other areas of the body.
Controls skeletal muscles.
autonomic nervous system - (ANSWER)Vital functions e.g. breathing, heart rate, digestion.
Actions WITHOUT conscious awareness e.g heart beating and digesting food.
Regulates involuntary actions because vital bodily functions would not work so efficiently if we had to
think about them.
Controls smooth muscles and glands
The ANS has two parts:
1.The sympathetic (fast, fight or flight)
2.The parasympathetic (rest and digest)
differences between ANS and SNS - (ANSWER)ANS is involuntary, WHEREAS the somatic nervous system
is under conscious control.
ANS controls smooth muscles and glands WHEREAS the somatic nervous system controls skeletal
muscles.
Endocrine system - (ANSWER)Endocrine system is slower than the nervous system but works alongside
it.
Endocrine system = very powerful and widespread effects.
Glands and Hormones - (ANSWER)Glands produce hormones.
Thyroid gland produces the hormone thyroxine.
, BIOPSYCHOLOGY - AQA A LEVEL LATEST 2025 EXAM WITH QUESTIONS AND CORRECT
VERIFIED ANSWERS GRADEDA+ GUARANTEED 100% PASS
Thyroxine -affects cells in the heart - increases heart rate.
Thyroxine increases metabolic rates in the cells which affects growth
Master gland - (ANSWER)pituitary gland -> controls release of hormones from all the other endocrine
glands.
endocrine system and automic nervous system working together - fight or flight - (ANSWER)1. Stressor -
> immediately and automatically ->
2. Hypothalamus activates pituitary gland -> triggers activity in sympathetic branch of the ANS.
3.ANS changes from resting, parasympathetic state to an aroused sympathetic state.
4.Adrenaline is released from the adrenal medulla into the bloodstream -> changes in the body such as
increased heart rate/dilated pupils/dry mouth/sweating etc.
= body is aroused for fight or flight!
5.After the threat -> parasympathetic state (rest and digest).
sympathetic state - (ANSWER)- Increases heart rate
- Increases breathing rate
- Dilates pupils
- Inhibits digestion
- Inhibits saliva production
- Contracts rectum
parasympathetic state - (ANSWER)- Decreased heart rate
- Constricted pupils
- Decreased breathing rate
- Relaxed rectum
- Stimulated saliva production
VERIFIED ANSWERS GRADEDA+ GUARANTEED 100% PASS
Divisions of the nervous system - (ANSWER)
The nervous system - (ANSWER)Specialised network of cells.
Internal communication system.
Electrical and chemical signals.
Two main functions:
1.To collect, process and respond to information in the environment.
2.To co-ordinate the working of different organs and cells in the body.
Central nervous system (CNS) - (ANSWER)brain
-Centre of conscious awareness.
-Outer layer - 'cerebral cortex' (3mm thick - teacosy!)
-Highly developed in humans.
-Two hemispheres
Spinal Cord
-Extension of the brain - passes messages to and from the brain
-Connects nerves to the PNS
-Responsible for reflex actions
Peripheral nervous system - (ANSWER)PNS transmits messages via millions of neurons (nerve cells) to
and from the CNS.
Consists of two divisions:
1.somatic nervous system
2. autonomic nervous system
somatic nervous system - (ANSWER)Controls muscle movement
, BIOPSYCHOLOGY - AQA A LEVEL LATEST 2025 EXAM WITH QUESTIONS AND CORRECT
VERIFIED ANSWERS GRADEDA+ GUARANTEED 100% PASS
Receives information from sensory receptors
Under CONSCIOUS CONTROL. (not in book)
Has sensory and motor neurons:
Sensory neurons - relay messages TO the CNS.
Motor neurons - relay messages FROM the CNS to other areas of the body.
Controls skeletal muscles.
autonomic nervous system - (ANSWER)Vital functions e.g. breathing, heart rate, digestion.
Actions WITHOUT conscious awareness e.g heart beating and digesting food.
Regulates involuntary actions because vital bodily functions would not work so efficiently if we had to
think about them.
Controls smooth muscles and glands
The ANS has two parts:
1.The sympathetic (fast, fight or flight)
2.The parasympathetic (rest and digest)
differences between ANS and SNS - (ANSWER)ANS is involuntary, WHEREAS the somatic nervous system
is under conscious control.
ANS controls smooth muscles and glands WHEREAS the somatic nervous system controls skeletal
muscles.
Endocrine system - (ANSWER)Endocrine system is slower than the nervous system but works alongside
it.
Endocrine system = very powerful and widespread effects.
Glands and Hormones - (ANSWER)Glands produce hormones.
Thyroid gland produces the hormone thyroxine.
, BIOPSYCHOLOGY - AQA A LEVEL LATEST 2025 EXAM WITH QUESTIONS AND CORRECT
VERIFIED ANSWERS GRADEDA+ GUARANTEED 100% PASS
Thyroxine -affects cells in the heart - increases heart rate.
Thyroxine increases metabolic rates in the cells which affects growth
Master gland - (ANSWER)pituitary gland -> controls release of hormones from all the other endocrine
glands.
endocrine system and automic nervous system working together - fight or flight - (ANSWER)1. Stressor -
> immediately and automatically ->
2. Hypothalamus activates pituitary gland -> triggers activity in sympathetic branch of the ANS.
3.ANS changes from resting, parasympathetic state to an aroused sympathetic state.
4.Adrenaline is released from the adrenal medulla into the bloodstream -> changes in the body such as
increased heart rate/dilated pupils/dry mouth/sweating etc.
= body is aroused for fight or flight!
5.After the threat -> parasympathetic state (rest and digest).
sympathetic state - (ANSWER)- Increases heart rate
- Increases breathing rate
- Dilates pupils
- Inhibits digestion
- Inhibits saliva production
- Contracts rectum
parasympathetic state - (ANSWER)- Decreased heart rate
- Constricted pupils
- Decreased breathing rate
- Relaxed rectum
- Stimulated saliva production
