1
BIOPSYCHOLOGY - AQA A LEVEL EXAM |
QUESTIONS AND ANSWERS | VERIFIED
ANSWERS (100% CORRECT) | LATEST
EXAM UPDATE
The two roles of the human nervous system - (answers)To collect, process and
respond to information in the environment
to co-ordinate the working of different organs and cells in the body
the two subsystems of the nervous system - (answers)peripheral nervous system
central nervous system
The divisions of the peripheral nervous system - (answers)autonomic nervous
system
somatic nervous system
The autonomic nervous system function - (answers)governs all vital functions in
the body such as breathing, heart rate, digestion, sexual arousal and stress
responses
Split into the sympathetic nervous system and the parasympathetic nervous
system
The parts of the central nervous system - (answers)The brain: centre of all
conscious awareness, the outer layer is called the cerebral cortex and is divided
into two hemispheres
,2
The spinal cord: an extension of the brain, responsible for reflex actions
The peripheral nervous system - (answers)sends information to the CNS from the
outside world and transmits messages from the CNS to muscles and glands
The central nervous system - (answers)is the origin of all complex commands and
decisions
The endocrine system - (answers)One of the body's major information systems
that instructs glands to release hormones directly into the bloodstream, these
hormones are carried towards target organs in the body
Gland - (answers)An organ in the body that synthesises substances such as
hormones
Hormones - (answers)chemical substances that circulate in the bloodstream and
only affect target organs, they are produces in large quantities but disappear
quickly
The pituitary gland - (answers)The main endocrine gland, often called the master
gland because it controls the release of hormones from all other endocrine glands
in the body
, 3
Fight or Flight response - (answers)1. when a stressor is perceived the
hypothalamus triggers activity in the sympathetic branch of the autonomic
nervous system
2. The ANS changes from its normal resting state (the parasympathetic state) to
the physiologically aroused sympathetic state
3. The stress hormone adrenaline is released into the bloodstream - adrenaline
triggers physiological changes in the body e.g. increased heart rate, necessary for
the response
4. once the threat has passed the parasympathetic nervous system returns the
body to its resting state, it acts as a break and reduces the activities of the body
that were increased by the actions of the sympathetic branch, sometimes
referred to as the rest and digest response
sympathetic state - (answers)- increases heart rate
- increases breathing rate
- dilates pupils
- inhibits saliva production
- contracts rectum
Parasympathetic state - (answers)- decreases heart rate
- decreases breathing rate
- contracts pupils
- stimulates digestion
- stimulates saliva production
BIOPSYCHOLOGY - AQA A LEVEL EXAM |
QUESTIONS AND ANSWERS | VERIFIED
ANSWERS (100% CORRECT) | LATEST
EXAM UPDATE
The two roles of the human nervous system - (answers)To collect, process and
respond to information in the environment
to co-ordinate the working of different organs and cells in the body
the two subsystems of the nervous system - (answers)peripheral nervous system
central nervous system
The divisions of the peripheral nervous system - (answers)autonomic nervous
system
somatic nervous system
The autonomic nervous system function - (answers)governs all vital functions in
the body such as breathing, heart rate, digestion, sexual arousal and stress
responses
Split into the sympathetic nervous system and the parasympathetic nervous
system
The parts of the central nervous system - (answers)The brain: centre of all
conscious awareness, the outer layer is called the cerebral cortex and is divided
into two hemispheres
,2
The spinal cord: an extension of the brain, responsible for reflex actions
The peripheral nervous system - (answers)sends information to the CNS from the
outside world and transmits messages from the CNS to muscles and glands
The central nervous system - (answers)is the origin of all complex commands and
decisions
The endocrine system - (answers)One of the body's major information systems
that instructs glands to release hormones directly into the bloodstream, these
hormones are carried towards target organs in the body
Gland - (answers)An organ in the body that synthesises substances such as
hormones
Hormones - (answers)chemical substances that circulate in the bloodstream and
only affect target organs, they are produces in large quantities but disappear
quickly
The pituitary gland - (answers)The main endocrine gland, often called the master
gland because it controls the release of hormones from all other endocrine glands
in the body
, 3
Fight or Flight response - (answers)1. when a stressor is perceived the
hypothalamus triggers activity in the sympathetic branch of the autonomic
nervous system
2. The ANS changes from its normal resting state (the parasympathetic state) to
the physiologically aroused sympathetic state
3. The stress hormone adrenaline is released into the bloodstream - adrenaline
triggers physiological changes in the body e.g. increased heart rate, necessary for
the response
4. once the threat has passed the parasympathetic nervous system returns the
body to its resting state, it acts as a break and reduces the activities of the body
that were increased by the actions of the sympathetic branch, sometimes
referred to as the rest and digest response
sympathetic state - (answers)- increases heart rate
- increases breathing rate
- dilates pupils
- inhibits saliva production
- contracts rectum
Parasympathetic state - (answers)- decreases heart rate
- decreases breathing rate
- contracts pupils
- stimulates digestion
- stimulates saliva production
