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