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VCE Psychology Unit 3 Outcome 1 SAC
Questions and Answers (100% Correct
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List the 2 main divisions of the nervous system Ans: Central nervous
system and Peripheral nervous system
List the two parts of the CNS Ans: The brain and spinal cord (NOT SPINE)
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List the two sections of the PNS Ans: The somatic nervous system and the
autonomic nervous system
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List the 3 subdivisions of the autonomic nervous system Ans: The
sympathetic, parasympathetic and enteric nervous systems
What is the main role of the central nervous system? Ans: Receives
neural messages from and transports neural messages to the PNS.
What are the main functions of the brain? Ans: The brain coordinates
mental processes and behaviour and regulates bodily activity
What are the main functions of the spinal cord? Ans: A bidirectional
cable that transmits neural signals between the brain and PNS
What is the PNS made of and what is its main function? Ans: The PNS is
made of all the neurons outside of the CNS and transmits signals
between the CNS and the rest of the body.
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What are the main functions of the somatic nervous system? Ans:
Transmits neural signals relating to voluntary movement and is comprised
of sensory (afferent) neural pathways and motor (efferent) neural
pathways. It transmits sensory neural messages from sensory receptors to
the CNS and motor neural messages from the CNS to skeletal muscles.
What are the main functions of the autonomic nervous system? Ans:
Regulates visceral muscles, organs, and glands, and transmits neural
messages to the central nervous system about their activity.
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What is the role of the sympathetic nervous system? Ans: Activates
visceral muscles, organs, and glands, preparing the body to respond to
a threat or stressor.
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What is the role of the parasympathetic nervous system? Ans: Maintains
the optimal functioning of visceral muscles, organs, and glands, returning
them to optimal functioning after experiencing heightened bodily
arousal due to sympathetic responses, as well as maintaining
homeostasis. Saves bodily resources
What are interneurons and where are they found? Ans: Neurons that
transfer neural messages between sensory neurons and motor neurons,
and are found in the CNS.
What are the steps in a conscious response? Ans: 1. Sensory stimulus
comes into contact with sensory receptors
2. Sensory neural signals are transmitted via afferent pathways in the
somatic nervous system to the spinal cord and then brain.
3. Brain processes information and initiates a motor response