PSIO 201 Exam 4 Question and
answers already passed 2025/2026
sensory function (afferent neurons) - correct answer ✔information goes to the brain and spinal cord via
cranial and spinal nerves
integrative function (interneurons) - correct answer ✔integrates sensory information by analyzing and
storing it
motor function (efferent neurons) - correct answer ✔information from the brain and spinal cord is sent
out to muscles or glands (effectors)
brain - correct answer ✔-control center of the human body
-center of intelligence, behavior, memory and emotion
-coordinates activity of skeletal muscles
-influences activity of visceral organs and glands
right cerebral hemisphere - correct answer ✔music, face recognition, visual imagery, spatial abilities
left cerebral hemisphere - correct answer ✔language, logic, reason
frontal lobe - correct answer ✔reasoning, planning, part of speech and movement, emotions, problem
solving
parietal lobe - correct answer ✔perception of stimuli related to touch, pressure, temperature, pain
temporal lobe - correct answer ✔perception and recognition of auditory stimuli and memory
,occipital lobe - correct answer ✔many aspects of vision
insula lobe - correct answer ✔integrates autonomic information, associated to visceral function
meninges - correct answer ✔-connective tissue coverings that surround the brain and spinal cord
functions:
-protect underlying neural tissues
-anchor the brain in cranial cavity and spinal cord in vertebral cavity
dura mater - correct answer ✔-most superficial layer
--outer layer fuses with periosteum of skull
--inner layer folds into parts of cranial cavity
major dural folds:
-falx cerebri
-falx cerebelli
-tentorium cerebellli
cerebrospinal fluid (CSF) - correct answer ✔functions:
-cushioning and shock absorption
-chemical protection
-exchange nutrients and wastes
, blood brain barrier - correct answer ✔-protective mechanism that maintains stable environment for
the brain
-capillaries of the brain are the least permeable of any capillaries in the body
-capillaries are selective partly due to presence of astrocytes
cerebrum - correct answer ✔functional areas:
-sensory areas
-motor areas
-association areas
primary motor area - correct answer ✔location: precentral gyrus in frontal lobe
function: voluntary activation of skeletal muscles
premotor area (motor association area) - correct answer ✔location: anterior to primary motor area in
the frontal lobe
function: communicates with primary motor area and thalamus to coordinate complex leaned
movements
primary somatosensory area - correct answer ✔location: post central gyrus in parietal lobe
function: receives sensory impulses from sensory receptors responding to touch, temperature and
proprioception
primary visual area - correct answer ✔location: medial portion of occipital lobe
answers already passed 2025/2026
sensory function (afferent neurons) - correct answer ✔information goes to the brain and spinal cord via
cranial and spinal nerves
integrative function (interneurons) - correct answer ✔integrates sensory information by analyzing and
storing it
motor function (efferent neurons) - correct answer ✔information from the brain and spinal cord is sent
out to muscles or glands (effectors)
brain - correct answer ✔-control center of the human body
-center of intelligence, behavior, memory and emotion
-coordinates activity of skeletal muscles
-influences activity of visceral organs and glands
right cerebral hemisphere - correct answer ✔music, face recognition, visual imagery, spatial abilities
left cerebral hemisphere - correct answer ✔language, logic, reason
frontal lobe - correct answer ✔reasoning, planning, part of speech and movement, emotions, problem
solving
parietal lobe - correct answer ✔perception of stimuli related to touch, pressure, temperature, pain
temporal lobe - correct answer ✔perception and recognition of auditory stimuli and memory
,occipital lobe - correct answer ✔many aspects of vision
insula lobe - correct answer ✔integrates autonomic information, associated to visceral function
meninges - correct answer ✔-connective tissue coverings that surround the brain and spinal cord
functions:
-protect underlying neural tissues
-anchor the brain in cranial cavity and spinal cord in vertebral cavity
dura mater - correct answer ✔-most superficial layer
--outer layer fuses with periosteum of skull
--inner layer folds into parts of cranial cavity
major dural folds:
-falx cerebri
-falx cerebelli
-tentorium cerebellli
cerebrospinal fluid (CSF) - correct answer ✔functions:
-cushioning and shock absorption
-chemical protection
-exchange nutrients and wastes
, blood brain barrier - correct answer ✔-protective mechanism that maintains stable environment for
the brain
-capillaries of the brain are the least permeable of any capillaries in the body
-capillaries are selective partly due to presence of astrocytes
cerebrum - correct answer ✔functional areas:
-sensory areas
-motor areas
-association areas
primary motor area - correct answer ✔location: precentral gyrus in frontal lobe
function: voluntary activation of skeletal muscles
premotor area (motor association area) - correct answer ✔location: anterior to primary motor area in
the frontal lobe
function: communicates with primary motor area and thalamus to coordinate complex leaned
movements
primary somatosensory area - correct answer ✔location: post central gyrus in parietal lobe
function: receives sensory impulses from sensory receptors responding to touch, temperature and
proprioception
primary visual area - correct answer ✔location: medial portion of occipital lobe
