NU 545 Unit 2 EXAM NEWEST 2026 WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW
VERSION!!
Review the anatomy of the brain. Which portion is responsible for keeping you awake, controlling
thought, speech, emotions and behavior, maintaining balance and posture? - (answer)Awake: Reticular
Formation (Brainstem)
Thought: Prefrontal Area
Speech: Broca's Speech/Wernicke's Area
Emotion/Behavior: Hypothalamus
Balance/Posture: Cerebellum
What part of the brain must be functioning for cognitive operations? - (answer)Reticular activating
system
Discuss the types of midbrain dysfunction and its physical symptoms. - (answer)movement disorders
difficulty w/ vision and hearing
memory trouble
--Parkinsonism & schizophrenia--
Know the function of the arachnoid villi. - (answer)one-way valve directing CSF outflow into the blood,
but preventing blood into the subarachnoid space
What is the function of the CSF? Where is it produced? Where is it absorbed? - (answer)protect
intracranial and spinal cord structures from jolts
prevent brain from tugging on meninges, nerve roots, and blood vessels
choroid plexus produces CSF
absorbed into circulation through arachnoid villi
Review blood flow to the brain. - (answer)CO2>> primary regulator of blood flow
internal carotid arteries
vertebral arteries
, NU 545 Unit 2 EXAM NEWEST 2026 WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW
VERSION!!
Circle of Willis
What is the gate control theory of pain? - (answer)substantia gelatinosa>> regulates pain transmission
from nociceptors (pain) and non-nociceptors (touch)>>touch inhibits pain
Know the type of nerve fibers that transmit pain impulses. - (answer)nociceptors
A-delta: sharp, localized, fast pain
C-fibers: dull, ache, burn, slow m
A-beta: touch and vibration>>no pain, but modulate
What are the two types of fibers that transmit the nerve action potentials generated by excitation of any
of the nociceptors. - (answer)A-delta: mechanonociceptors // mechanothermal nociceptors
C fibers: stimulated by nociceptors
Where in the CNS does pain perception occur? - (answer)Reticular system
Limbic system
Cerebral cortex
Know different clinical descriptions of pain (acute, chronic, neuropathic); pain threshold/tolerance -
(answer)
Acute pain - (answer)normal nociceptive response prompting person to relieve immediately
lasts seconds>>days>>3 months
somatic, visceral, referred
Chronic pain - (answer)pain lasting longer than 3-6 months
ongoing: low back pain
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW
VERSION!!
Review the anatomy of the brain. Which portion is responsible for keeping you awake, controlling
thought, speech, emotions and behavior, maintaining balance and posture? - (answer)Awake: Reticular
Formation (Brainstem)
Thought: Prefrontal Area
Speech: Broca's Speech/Wernicke's Area
Emotion/Behavior: Hypothalamus
Balance/Posture: Cerebellum
What part of the brain must be functioning for cognitive operations? - (answer)Reticular activating
system
Discuss the types of midbrain dysfunction and its physical symptoms. - (answer)movement disorders
difficulty w/ vision and hearing
memory trouble
--Parkinsonism & schizophrenia--
Know the function of the arachnoid villi. - (answer)one-way valve directing CSF outflow into the blood,
but preventing blood into the subarachnoid space
What is the function of the CSF? Where is it produced? Where is it absorbed? - (answer)protect
intracranial and spinal cord structures from jolts
prevent brain from tugging on meninges, nerve roots, and blood vessels
choroid plexus produces CSF
absorbed into circulation through arachnoid villi
Review blood flow to the brain. - (answer)CO2>> primary regulator of blood flow
internal carotid arteries
vertebral arteries
, NU 545 Unit 2 EXAM NEWEST 2026 WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW
VERSION!!
Circle of Willis
What is the gate control theory of pain? - (answer)substantia gelatinosa>> regulates pain transmission
from nociceptors (pain) and non-nociceptors (touch)>>touch inhibits pain
Know the type of nerve fibers that transmit pain impulses. - (answer)nociceptors
A-delta: sharp, localized, fast pain
C-fibers: dull, ache, burn, slow m
A-beta: touch and vibration>>no pain, but modulate
What are the two types of fibers that transmit the nerve action potentials generated by excitation of any
of the nociceptors. - (answer)A-delta: mechanonociceptors // mechanothermal nociceptors
C fibers: stimulated by nociceptors
Where in the CNS does pain perception occur? - (answer)Reticular system
Limbic system
Cerebral cortex
Know different clinical descriptions of pain (acute, chronic, neuropathic); pain threshold/tolerance -
(answer)
Acute pain - (answer)normal nociceptive response prompting person to relieve immediately
lasts seconds>>days>>3 months
somatic, visceral, referred
Chronic pain - (answer)pain lasting longer than 3-6 months
ongoing: low back pain
