lecture 8 Flashcards
Which is NOT a function of a neuroglial cell?
to generate graded potentials
Sensory impulses are carried to the central nervous system by
afferent neurons
Which statement best describes the location of the cerebellum?
posterior to brainstem and inferior to cerebrum
Cerebral spinal fluid is produced in which structure(s)?
choroid plexuses
what drains venous blood from the brain and delivers it to the internal jugular veins?
dural venous sinuses
The brain requires an almost continuous supply of
oxygen and glucose
Cerebrospinal fluid
is produced at a rate of about one half liter per day
what brain structures consists of the medulla oblongata, pons and midbrain?
brain stem
Which portion of the ventricular system is located in the cerebral hemisphere?
lateral ventricle
Cerebrospinal fluid passes through what structure in the midbrain as it moves from the third to the fourth ventricle?
aqueduct of the midbrain
What are the fingerlike projections extending into the dural venous sinuses that reabsorb cerebrospinal fluid into the blood?
arachnoid villi
Blood flows to the brain through the _____ arteries and away from the brain through the _____ veins.
internal carotid and vertebral, internal jugular
A child riding a bike falls and hits their head. The child was not wearing a helmet. In the emergency room, cerebrospinal fluid taken during a spinal tap reveals blood. The doctors diagnosed the child had torn cerebral veins as they pass to the superior sagittal sinus. What area of the body was the fluid taken?
subarachnoid space
An infant has hydrocephalus. The CSF could not get out of the third ventricle. What passage was blocked?
aqueduct of midbrain
Blockage of cerebrospinal fluid within the aqueduct of midbrain would result in the swelling of all ventricular spaces EXCEPT the
fourth ventricle
