CRNI Exam Review 2025-2026 – Complete Study Guide with
Practice Questions and Correct Answers (Graded A+)
Hormones that transmit and stimulate the contraction and relaxation of the heart -
CORRECT ANSWER -norepi
acetylcholine
Largest part of the brain - CORRECT ANSWER -cerebrum
Four lobes of the cerebrum - CORRECT ANSWER -frontal lobe, parietal lobe, occipital lobe,
temporal lobe
The frontal lobe controls - CORRECT ANSWER -higher intellectual & autonomic functions
The parietal lobe contols - CORRECT ANSWER -position, sense, touch, & motor function
The occipital lobe controls - CORRECT ANSWER -vision
The temporal lobe controls - CORRECT ANSWER -memory & perception of sound
The cerebellum controls - CORRECT ANSWER -movement, equilibrium, muscle tonicity, &
spatial relationships
,The brain stem consists of - CORRECT ANSWER -Midbrain
Pons
Medulla oblongata
The midbrain function - CORRECT ANSWER -transmit stimuli from spinal cord
The pons function - CORRECT ANSWER -to relay impulses to brain centers and lower spinal
centers
The Medulla Oblongata function - CORRECT ANSWER -control involuntary functions
Spaces located deep within the brain that contain cerebrospinal fluid and connect with the
fluid spaces in the spinal cord - CORRECT ANSWER -Ventricles
Function of gray or unmyelinated matter in the spinal cord - CORRECT ANSWER -
consolidates the cord's reflexes
Function of White or myelinated matter in spinal cord - CORRECT ANSWER -impulse
pathway linking the spinal cord and the brain
Three meninges or protective membranes covering the brain & spinal cord - CORRECT
ANSWER -Pia mater
Arachnoid Mater
, Dura Mater
How many cranial nerves are there? - CORRECT ANSWER -12
Function of 12 cranial nerves - CORRECT ANSWER -Control voluntary muscular functions
and the autonomic sensory abilities to see, hear, smell, and taste
How many spinal nerves are there? - CORRECT ANSWER -31 pairs
Cervical plexis supplies - CORRECT ANSWER -Head and neck
Brachial plexus supplies - CORRECT ANSWER -upper extremities
Sections of the spinal cord - CORRECT ANSWER -cervical
brachial
thoracic
lumbar
sacral
coccygeal
The autonomic nervous system controls - CORRECT ANSWER -involuntary internal functions
of body including internal organs, involuntary fibers, and glands
Practice Questions and Correct Answers (Graded A+)
Hormones that transmit and stimulate the contraction and relaxation of the heart -
CORRECT ANSWER -norepi
acetylcholine
Largest part of the brain - CORRECT ANSWER -cerebrum
Four lobes of the cerebrum - CORRECT ANSWER -frontal lobe, parietal lobe, occipital lobe,
temporal lobe
The frontal lobe controls - CORRECT ANSWER -higher intellectual & autonomic functions
The parietal lobe contols - CORRECT ANSWER -position, sense, touch, & motor function
The occipital lobe controls - CORRECT ANSWER -vision
The temporal lobe controls - CORRECT ANSWER -memory & perception of sound
The cerebellum controls - CORRECT ANSWER -movement, equilibrium, muscle tonicity, &
spatial relationships
,The brain stem consists of - CORRECT ANSWER -Midbrain
Pons
Medulla oblongata
The midbrain function - CORRECT ANSWER -transmit stimuli from spinal cord
The pons function - CORRECT ANSWER -to relay impulses to brain centers and lower spinal
centers
The Medulla Oblongata function - CORRECT ANSWER -control involuntary functions
Spaces located deep within the brain that contain cerebrospinal fluid and connect with the
fluid spaces in the spinal cord - CORRECT ANSWER -Ventricles
Function of gray or unmyelinated matter in the spinal cord - CORRECT ANSWER -
consolidates the cord's reflexes
Function of White or myelinated matter in spinal cord - CORRECT ANSWER -impulse
pathway linking the spinal cord and the brain
Three meninges or protective membranes covering the brain & spinal cord - CORRECT
ANSWER -Pia mater
Arachnoid Mater
, Dura Mater
How many cranial nerves are there? - CORRECT ANSWER -12
Function of 12 cranial nerves - CORRECT ANSWER -Control voluntary muscular functions
and the autonomic sensory abilities to see, hear, smell, and taste
How many spinal nerves are there? - CORRECT ANSWER -31 pairs
Cervical plexis supplies - CORRECT ANSWER -Head and neck
Brachial plexus supplies - CORRECT ANSWER -upper extremities
Sections of the spinal cord - CORRECT ANSWER -cervical
brachial
thoracic
lumbar
sacral
coccygeal
The autonomic nervous system controls - CORRECT ANSWER -involuntary internal functions
of body including internal organs, involuntary fibers, and glands
