Unit 10 Quiz - Brain & Cranial Nerves

A neural cortex is found on the surface of the

cerebellum and cerebral hemispheres

The third and fourth ventricles are linked by a slender canal designated as the

cerebral aqueduct

The corpus callosum is composed of

commissural fibers

Usually accompanied by transient uncious state

concussion

A large bundle of nerve fibers that allow communication between the right and left hemispheres of the brain is the:

corpus callosum

Each of the following is an ascending tract in the spinal cord, except the

corticospinal tract

Gustatory information reaches the brain by way of

cranial nerve IX

Which of the following lies between the cerebrum and the brainstem?

diencephalon

The ventricle associated with the cerebellum, pons, and upper medulla is the

fourth

Which of the following is not a property of the limbic system?

functions in maintaining homeostasis in cold weather

Only about ________ percent of the information provided by sensory fibers reaches the cerebral cortex and our awareness

1%

The cerebellum relies on information from

-the eyes. -the inner ear as movements are under way. -proprioceptors. -motor commands from upper motor neurons

The cranial nerves that innervate the eye muscles are

III, IV, and VI

True or False: Cerebrospinal fluid circulates through both the brain and spinal cord

True

Within each hemisphere, deep to the floor of the lateral ventricle, you will find the

basal nuclei

The neural tissue is isolated from the general circulation by the ________________

blood-brain barrier

As you ascend from the medulla oblongata to the cerebrum, the functions of each successive level become

both more complex and less crucial to visceral functions

The spinal cord consists of:

both white and gray matter

Bob is struck on the left side of the head and is knocked unconscious. When he recovers consciousness, he can hear individual words but cannot understand the meaning of phrases or sentences. This implies damage to his

general interpretive area

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

Joe begins to experience mood swings and disturbed thirst and hunger. Imaging studies indicate that a brain tumor is the likely cause of these disorders. Where in the brain is the tumor most likely located?

hypothalamus

The __________ provides the principal link between the nervous and endocrine systems.

hypothalamus

The limbic system includes which of the following:

hypothalamus

Parkinson disease is the result of

inadequate production of dopamine by substantia nigra neurons

Stimulation of the reticular formation results in

increased consciousness

Excitation of neurons in the basal nuclei would lead to

increased muscle tone

The region of the cerebral cortex that is medial and deep to the temporal lobe is the

insula

The sense of taste projects to the gustatory cortex located in the ________

insula

Each lateral ventricle communicates with the third ventricle through a(n)

interventricular foramen.

After suffering a stroke, Mary finds that she cannot move her right arm. This would suggest that the stroke damage is in the area of the ________ lobe

left frontal

Divisions of the cerebral hemispheres that are named after the overlying skull bones are

lobes

The two cerebral hemispheres are separated by the

longitudinal fissure

Motor neurons whose cell bodies are within the spinal cord are called ________ neurons.

lower motor

Autonomic centers that control blood pressure, heart rate, and digestion are located in the

medulla oblongata

The cardiovascular reflexes are based in the

medulla oblongata

The control of heart rate and blood pressure is based in the

medulla oblongata

The respiratory rhythmicity center is located in the

medulla oblongata

The area of the motor cortex that is devoted to a particular body region is proportional to the

number of motor units in that region

After suffering a blow to the back of the head, Phil loses his vision. The blow probably caused damage to the

occipital lobe

The visual cortex is located in the

occipital lobe

Damage to the ________ nerve would result in near paralysis of the eye

oculomotor

Olfactory receptors send axons through the cribriform plate and synapse on neurons in the

olfactory bulb

A complete loss of motor function

paralysis

The cerebral area posterior to the central sulcus is the

parietal lobe

The layer of the meninges that closely follows every gyrus and sulcus is the

pia mater

Which structure is covered by many blood vessels and adheres tightly to the surface of the brain?

pia mater

The primary motor cortex is the surface of the

precentral gyrus

The region of the brain responsible for predicting the consequence of events or actions is the

prefrontal cerebral cortex

The surface of the postcentral gyrus contains the _______________ cortex

primary sensory

Which of the following is a function of the thalamus?

process sensory information and relay it to the cerebrum

The basal nuclei

provide the general pattern and rhythm for movements such as walking

Complex motor activities such as riding a bicycle

require the coordinated activity of several regions of the brain.

Which of the following is directly associated with sleep and wakefulness

reticular formation

You suspect your friend has damage to cranial nerve I when he is unable to

smell his food

Cerebrospinal fluid flows within the

subarachnoid space

Cerebrospinal fluid enters the blood circulation at the

superior sagittal sinus

The auditory cortex is located in the

temporal lobe

Sensory information is processed and relayed to the cerebrum by the

thalamus

The __________ filters and relays sensory information to the cerebral cortex.

thalamus

The structure concerned with integration of sensory impulses such as recognition of a slashed wrist as painful is the:

thalamus

The subdural space lies between

the dura mater and the arachnoid mater

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 Roman numeral V indicates the ________ nerve

trigeminal

The cranial nerve that has three major branches is the

trigeminal

The Roman numeral VIII indicates the ________ nerve.

vestibulocochlear

Damage to the pyramidal cells of the primary motor cortex would directly affect

voluntary motor activity

Which of the following symptoms would you associate with damage to the accessory nerve?

weakness of the sternocleidomastoid muscle

The motor cortex:

-initiates impulses that eventually lead to voluntary skeletal muscle contraction -receives impulses from the sensory cortex and cerebellum -if stimulated electrically causes movements of parts of the body

Which of the following is a function of the hypothalamus?

-coordinates day-night cycles of activity/inactivity -controls autonomic centers -regulates body temperature -secretes hormones

The cerebellum

-functions to maintain proper posture and equilibrium. -compares intended movement to actual movement. -if damaged leads to uncoordinated and jerky movements

The pons contain

-sensory and motor nuclei for some cranial nerves. -nuclei concerned with the control of respiration. -tracts that link the cerebellum with the brainstem

There are ________ pairs of cranial nerves.

12

The choroid plexuses produces CSF at a rate of about

500 mL/day

Which of the following helps protect the brain? a) the blood-brain barrier b) the bones of the skull c) the cranial meninges d) the CSF

All of the above!

A(n)___________ is a temporary cerebral disorder accompanied by abnormal movements, unusual sensations, and/or inappropriate behavior.

Seizure

Which of the cranial nerves is named for the fact that it wanders

X

The general interpretive (Wernicke's) area

allows us to interpret what is read or heard

The white matter of the cerebellum forms the

arbor vitae

Cortical regions that interpret sensory information or coordinate motor responses are called ________ areas.

association

Overseeing the postural muscles of the body and making rapid adjustments to maintain balance and equilibrium are functions of the

cerebellum

___________ is a printed record of the brain's electrical activity over a period of time

electroencephalogram

Specialized ________ cells help form the choroid plexus

ependymal