NU551 Unit 5 Midterm Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
Somatic nervous system function Controls skeletal muscle
Fastest conducting axons Large diameter, myelinated axons
Microglia function Clear debris and provide immune defense
in the
CNS
EPSPs effect on neuron Move membrane potential toward
threshold;
neuron is facilitated
Reticular Activating System (RAS) Regulates wakefulness and alertness
function
Prefrontal cortex function Controls thinking, judgment, and
concentration
Broca area function Motor aspect of speech production
Occipital lobe function Primary visual cortex
, Hypothalamus function Regulates homeostasis and instinctive
behaviors
Corpus callosum function Major fiber tract connecting the two
cerebral
hemispheres
Medulla oblongata function Controls heart rate, blood pressure, and
vital
reflexes
Reticular formation function Influences respiratory patterns
Lateral horn content Contains autonomic (sympathetic) neuron
cell
bodies
Dura mater Outermost meningeal layer
Circle of Willis function Provides collateral cerebral blood flow
Astrocytes function Support formation of the blood-brain
barrier (BBB)
Cranial Nerve I (olfactory) damage Leads to loss of smell
α1-receptor stimulation effect Causes vasoconstriction and increases
blood
pressure
Answers with Verified Solutions | Latest
Updated 2026
Somatic nervous system function Controls skeletal muscle
Fastest conducting axons Large diameter, myelinated axons
Microglia function Clear debris and provide immune defense
in the
CNS
EPSPs effect on neuron Move membrane potential toward
threshold;
neuron is facilitated
Reticular Activating System (RAS) Regulates wakefulness and alertness
function
Prefrontal cortex function Controls thinking, judgment, and
concentration
Broca area function Motor aspect of speech production
Occipital lobe function Primary visual cortex
, Hypothalamus function Regulates homeostasis and instinctive
behaviors
Corpus callosum function Major fiber tract connecting the two
cerebral
hemispheres
Medulla oblongata function Controls heart rate, blood pressure, and
vital
reflexes
Reticular formation function Influences respiratory patterns
Lateral horn content Contains autonomic (sympathetic) neuron
cell
bodies
Dura mater Outermost meningeal layer
Circle of Willis function Provides collateral cerebral blood flow
Astrocytes function Support formation of the blood-brain
barrier (BBB)
Cranial Nerve I (olfactory) damage Leads to loss of smell
α1-receptor stimulation effect Causes vasoconstriction and increases
blood
pressure
