lab 14
A patient suffers an inability to shrug their shoulders. The nerve most likely to be damaged is the
accessory
The white matter of the cerebellum forms the
arbor vitae
Identify the structure labeled "10."
central canal
Identify the structure labeled "3."
cerebral aqueduct
Identify the structure labeled "1."
choroid plexus
The rounded elevations of the cerebrum that increase its surface area are called
gyri
Which sensation(s) does the vestibulocochlear nerve carry?
hearing and balance
A patient develops a tumor of a cranial nerve that leads to difficulty in speaking from a loss of tongue movement. Which cranial nerve is affected?
hypoglossal
List the maters surrounding the brain from the deepest layer to the most superficial layer.
pia, arachnoid, dura
The composition of gray matter includes neuron cell bodies.
True
The ventricles are all interconnected.
True
White matter has a fatty consistency.
True
Which cranial nerve sends balance sensations to the brain?
vestibulocochlear
There are ________ pairs of cranial nerves.
12
The meninges consist of ___ layers.
3
Identify the passageway found in the spinal cord that is continuous with the ventricles.
Central canal
Where is the arbor vitae located?
Cerebellum
Which passageway connects the third and fourth ventricles?
Cerebral aqueduct
Which region of the brain contains gyri and sulci?
Cerebrum
Which region of the brain is necessary for consciousness?
Cerebrum
What structure connects the right and left cerebral hemispheres?
Corpus callosum
Which of the following regions cannot be observed superficially?
Diencephalon
Which of the following is the outer layer of the meninges?
Dura mater
Cerebrospinal fluid is produced within the ventricles.
True
The brain is a solid organ that lacks cavities.
False
What type of tissue makes up the cerebral cortex?
Gray matter
The cranial nerves that innervate the extrinsic eye muscles are
III, IV, and VI
Which of the following ventricles is found under the corpus callosum?
Lateral ventricles
Which ventricles are divided by the septum pellucidum?
Lateral ventricles
Which of the following landmarks divides the cerebrum in half?
Longitudinal fissure
Name the membranous encasement surrounding the brain.
Meninges
What part of the corpora quadrigemina is clearly observed in a midsagittal section?
Superior colliculus
Which of the following areas form the central core of the brain?
Thalamus
What is the function of white matter?
Transmits messages
Which of the following landmarks separate the cerebrum from the cerebellum?
Transverse fissure
Which cranial nerve is tested by having the patient stick out their tongue?
hypoglossal
The lateral ventricles are found
in the cerebral hemispheres
Droopy eyelids and double vision can result from injury to the ________ nerve.
oculomotor
You suspect your friend has damage to cranial nerve I when he is unable to
smell his food
Identify the structure labeled "6."
subarachnoid space
What contains a spider web-like network of cells and fibers through which cerebrospinal fluid flows?
subarachnoid space
Identify the structure labeled "9."
superior sagittal sinus
Jean needs to have a tooth in her mandible filled. Her dentist injects a local anesthetic to block pain afferents in one of her cranial nerves. What cranial nerve does the dentist numb?
trigeminal
The cranial nerve that has three major branches is the
trigeminal
The patient has the following symptoms: change in vocal tone, problems swallowing, inability to control urination, erratic heart rate, and gastric problems. You would identify the problem as being related to the
vagus nerve
Chambers within the brain that contain cerebrospinal fluid are called
ventricles