Psychology Week 3 - Chapter 3
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Psychology Week 3 - Chapter 3
exam prep questions week & chapter 3
The nervous system consists of 2 systems:
the Central Nervous System (CNS)
the Peripheral Nervous system (PNS)
Sensory neurons carry sensory information to:
Motor neurons transmit commands from:
the brain to the glands and muscles of the body
neurons with one another
neurons generally consist of:
when a neuron is at its resting potential it is:
polarised - with negative charge inside the cell membrane and positive charge on the outside
graded potentials are the:
spreading voltage changes along the cell membrane
an action potential is:
the firing of the neuron or nerve impulse.
transmit information from one neuron to another as they are released from the synapse.
the endocrine system:
is a collection of glands that control various bodily functions
sends global messages through the blood stream
neurons from the PNS carry messages to and from the __________.
Two subdivisions of the PNS include:
somatic nervous system
- carries information to the brain and motor neurons that direct actions of muscles
autonomic nervous system
- controls basic life processes such as heart beat, digestive system and breathing
autonomic nervous system is broken into 2 parts:
sympathetic nervous system (activated in response to threats) and
parasympathetic nervous system (routine activities)
Which parts of the brain are used for more sophisticated sensory, cognitive and motor processes?
cerebrum and cortex
CNS consists of
the brain and the spinal cord
Role of the spinal cord in CNS:
to carry out reflexes, transmit sensory information to the brain and transit messages from the brain to the muscles and organs
Structures that link the brain to the spinal cord include:
which consists of the medulla oblongata, the cerebellum and parts of the reticular formation.
These structures sustain life by controlling our supply of oxygen and blood to cells in the body and regulate our arousal levels.
The structures that help humans orient to visual and auditory stimuli with the eye and body movements include:
which consists of the tectum and the tegmentum
Complex sensory information including emotional, cognitive, and behavioural processes involve the:
which consist of the hypothalamus, thalamus, & the subcortical structures of the cerebrum and cerebral cortex.
The cerebral cortex consists of two hemispheres, each has:
four sets of lobes
Heritability refers to:
proportion of variability
among individuals on an observed characteristic that can be accounted for by genetic variability.
Neurons connect at:
stages of communication between one neuron to another:
1. Resting state
3. graded potential
4. action potential
5. neurotransmitter release
6. chemical message received.
Dopamine is a neurotransmitter that can effect:
experience of pleasure
Lack of dopamine- releasing neurons can cause
reduced facial displays of emotion
general slowing thought processes
Serotonin is a neurotransmitter which regulates:
Acetylcholine is a neurotransmitter which is involved in:
learning and memory
Endorphins are chemicals that:
elevate mood and reduce pain
Lobes of the cerebral cortex include:
- located in the rear portion of the cortex, specialised for vision
- located in the from of occipital lobes, involved in functions like touch, detecting movement in the environment, locating objects within space and own body as it moves
- functions include movement, attention, planning, social skills, abstract thinking, memory and some aspects of personality