(CSRS) Online Course Questions with
verified correct detailed answer latest
update 2025
Brainstem --- correct answer ---The oldest part and central core of the
brain, responsible for automatic survival functions.
-Controls: heart rate, breathing, blood pressure, eye movement,
hearing, speech, swallowing
-responsible for autonomic survival and function
Pons --- correct answer ---A brain structure that relays information
from the cerebellum to the rest of the brain
-the part of the brainstem that links the medulla oblongata and the
thalamus
-largest portion of the brainstem
-contains cranial nerves 5,6,7 (trigeminal, abducens, facial)
-motor nerve fibers connect motor areas of the cerebral cortex to the
spinal cord and allow voluntary movement
-damage to these nerves can cause "LOCKED-IN SYNDROME
(Pseudocoma)
,Locked-in syndrome --- correct answer ---Condition in which a patient
is aware and awake but cannot move or communicate verbally
because of complete paralysis of nearly all voluntary muscles except
the eyes.
-Pontine stroke: rare neurological disorder in which there is a
complete paralysis of all voluntary muscles except the one that control
movement of the eyes cranial nerve #5 trigeminal
Thalamus --- correct answer ---the brain's sensory control center,
located on top of the brainstem; it directs messages to the sensory
receiving areas in the cortex and transmits replies to the cerebellum
and medulla
-Executive Assistant: the cerebral cortex
-almost all information that ends up in the cortex passes through here
first
-sensory & motor integration
Hypothalamus --- correct answer ---a neural structure lying below the
thalamus; directs eating, drinking, body temperature; helps govern
the endocrine system via the pituitary gland, and is linked to emotion
-Controls Autonomic Nervous System (ANS)
-regulates activity and endocrine glands
,-connects physiological response to emotions
-regulates: water balance, hunger, thirst, sexual drive, sleep-wake-
cycles, body temperature
Cerebellum --- correct answer ---the "little brain" at the rear of the
brainstem; functions include processing sensory input and
coordinating movement output and balance
-Vestibulocerebellum: coordinates balance
-Spinocerebellum: coordinates posture and gait, proximal limb
muscles
-Cerebrocerebellum: coordinates distal limb movements of small
muscles used for speech, regulates force, timing, and direction of
movement, involved in detecting and correcting movement errors,
plays a role in motor learning and nonverbal communication and the
ability to shift focus of attention
Blood supply to the brain --- correct answer ---internal carotids and
vertebral arteries
Anterior Cerebral Artery (Circle of Willis) --- correct answer ---
Supplies anterior frontal lobe
, Damage: characterized by weakness and sensory loss in the lower leg
and foot opposite to the lesion and behavioral changes
Circle of Willis --- correct answer ---Ring of blood vessels that sit at
the base of the brain
-receives blood from both Internal Carotid & Basilar arteries
-branches off into pairs of arteries
-Anterior Cerebral Artery (ACA)
-Middle Cerebral Artery (MCA)
-Posterior Cerebral Artery (PCA)
Middle Cerebral Artery (Circle of Willis) --- correct answer ---
Supplies lateral portion of both cerebral hemispheres thalamus, and
hypothalamus
Damage: include, but are not limited to, neglect, hemiparesis, ataxia,
perceptual deficits, cognitive deficits, speech deficits, and visual
disorders
Posterior Cerebral Artery (Circle of Willis) --- correct answer ---
Supplies: occipital lobe, thalamus, and midbrain