WGU D574 NEUROPSYCHOLOGY ACTUAL
EXAM PAPER 2026 COMPLETE QUESTIONS
AND SOLUTIONS GRADED A+
◉ behavioral neuroscience
Answer: the study of the physiological, evolutionary, and
developmental mechanisms of behavior and experience,
emphasizing the relationship between biology and psychology
◉ biological psychology
Answer: also known as biopsychology, psychobiology, or
physiological psychology, this branch of psychology focuses on
understanding behavior through physiological, evolutionary, and
developmental mechanisms
◉ consciousness
Answer: the state or quality of awareness, subjectivity, and
experience, particularly in the context of the mind-body problem
and its relationship to brain activity
◉ evolutionary explanation
,Answer: the description of the evolutionary history of a structure or
behavior, highlighting modifications from ancestral species and
adaptive advantages
◉ functional explanation
Answer: the description of why a structure or behavior evolved as it
did, identifying the adaptive benefits conferred by certain traits
◉ ontogenetic explanation
Answer: the description of the developmental processes underlying
a behavior or trait, often involving genetic and environmental
influences during an organism's lifespan
◉ physiological explanation
Answer: the description of the relationship between a behavior and
the activity of the brain and other bodily organs, focusing on the
biological mechanisms underlying behavior
◉ neuroethics
Answer: The study of ethical issues arising from research in
neuroscience and related fields, including concerns about animal
research and human experimentation
◉ three R's
,Answer: reduction, replacement, and refinement; legal standards for
animal research aimed at reducing the number of animals used,
finding alternatives to animal models when possible, and refining
procedures to minimize pain and distress
◉ astrocytes
Answer: star-shaped glial cells that wrap around dendrites,
synchronize closely related neurons, and regulate blood flow in
active brain areas
◉ axon
Answer: a thin fiber of constant diameter that conveys impulses
from one neuron to another
◉ glia
Answer: non-neuronal cells that support and protect neurons,
including astrocytes, microglia, oligodendrocytes, and Schwann cells
◉ mitochondria
Answer: organelles responsible for generating energy (ATP) in cells,
which is crucial for brain function, cognition, and mental health
◉ myelin sheath
, Answer: insulating material that surrounds and protects certain
vertebrate axons, improving the speed of nerve impulses
◉ neurons
Answer: specialized cells responsible for receiving, processing, and
transmitting information in the nervous system
◉ soma
Answer: the cell body of a neuron containing the nucleus, ribosomes,
and mitochondria
◉ synapse
Answer: junction between two neurons where chemical signals are
transmitted from one neuron to another
◉ action potential
Answer: messages sent by axons, characterized by depolarization of
the neuron membrane
◉ all-or-none law
Answer: the principle stating that all action potentials, once
initiated, are approximately equal in amplitude and velocity,
regardless of the intensity of the stimulus
EXAM PAPER 2026 COMPLETE QUESTIONS
AND SOLUTIONS GRADED A+
◉ behavioral neuroscience
Answer: the study of the physiological, evolutionary, and
developmental mechanisms of behavior and experience,
emphasizing the relationship between biology and psychology
◉ biological psychology
Answer: also known as biopsychology, psychobiology, or
physiological psychology, this branch of psychology focuses on
understanding behavior through physiological, evolutionary, and
developmental mechanisms
◉ consciousness
Answer: the state or quality of awareness, subjectivity, and
experience, particularly in the context of the mind-body problem
and its relationship to brain activity
◉ evolutionary explanation
,Answer: the description of the evolutionary history of a structure or
behavior, highlighting modifications from ancestral species and
adaptive advantages
◉ functional explanation
Answer: the description of why a structure or behavior evolved as it
did, identifying the adaptive benefits conferred by certain traits
◉ ontogenetic explanation
Answer: the description of the developmental processes underlying
a behavior or trait, often involving genetic and environmental
influences during an organism's lifespan
◉ physiological explanation
Answer: the description of the relationship between a behavior and
the activity of the brain and other bodily organs, focusing on the
biological mechanisms underlying behavior
◉ neuroethics
Answer: The study of ethical issues arising from research in
neuroscience and related fields, including concerns about animal
research and human experimentation
◉ three R's
,Answer: reduction, replacement, and refinement; legal standards for
animal research aimed at reducing the number of animals used,
finding alternatives to animal models when possible, and refining
procedures to minimize pain and distress
◉ astrocytes
Answer: star-shaped glial cells that wrap around dendrites,
synchronize closely related neurons, and regulate blood flow in
active brain areas
◉ axon
Answer: a thin fiber of constant diameter that conveys impulses
from one neuron to another
◉ glia
Answer: non-neuronal cells that support and protect neurons,
including astrocytes, microglia, oligodendrocytes, and Schwann cells
◉ mitochondria
Answer: organelles responsible for generating energy (ATP) in cells,
which is crucial for brain function, cognition, and mental health
◉ myelin sheath
, Answer: insulating material that surrounds and protects certain
vertebrate axons, improving the speed of nerve impulses
◉ neurons
Answer: specialized cells responsible for receiving, processing, and
transmitting information in the nervous system
◉ soma
Answer: the cell body of a neuron containing the nucleus, ribosomes,
and mitochondria
◉ synapse
Answer: junction between two neurons where chemical signals are
transmitted from one neuron to another
◉ action potential
Answer: messages sent by axons, characterized by depolarization of
the neuron membrane
◉ all-or-none law
Answer: the principle stating that all action potentials, once
initiated, are approximately equal in amplitude and velocity,
regardless of the intensity of the stimulus
