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78 terms

Brain and Cranial Nerves

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The following statements concerning the brain stem is true
Damage to the brain stem is usually fatal.
In the C S, clusters of gray matter containing cell bodies are called
nuclei.
The fact that the right side of the brain controls the left side of the body is explained by the
decussation of the pyramids in the medulla.
The following is correctly associated with the medulla oblongata?
It contains nuclei for regulation of heart rate and blood vessel diameter.
The pyramids of the medulla contain
descending motor tracts.
Walking a tightrope would activate what portiones) of the medulla
the pyramids and the olives
Consider the following five terms and determine which does not belong.
pons
A patient with a traumatic head injury may exhibit vomiting as a result of irritation of nuclei in the
medulla oblongata
A small lesion in the brainstem which resulted in a rapid heart rate, intense vasoconstriction, and elevated blood pressure would probably be located in the
medulla oblongata.
The part of the brain that connects the medulla to the midbrain is the
pons.
The nucleus for the facial nerve (cranial nerve VII) is located in the
pons
Damage to pontine nuclei might affect
heart rate.
The brain contains the pneumotaxic and apneustic areas
pons
Two portions of the brain are involved in controlling respiration
pons, medulla oblongata
The nuclei of cranial nerves III and IV are located in the
midbrain.
The superior and inferior colliculi are located in which of the following portions of the midbrain
tectum (roof)
The inferior colliculi
are involved with auditory pathways in the CNS
The superior colliculi receive input from the
eyes, skin, cerebrum and inferior colliculi.
When you walk up behind someone and tap their right shoulder, they will reflexly
turn their head toward the right.
A bird hits the windshield of your car and you reflexly duck and close your eyes. Which of the following is
responsible for this action?
superior colliculus
The substantia nigra interconnects with the
basal nuclei
A lesion in the cerebral peduncles might affect
movement
The sleep/wake cycle is influenced by the
reticular formation
The reticular formation
maintains alertness and attention.
The following activities would stimulate the reticular formation?
a clock radio coming on in the morning
During an autopsy the brainstem was separated from the rest of the brain by a cut between the
midbrain and diencephalon.
The cerebellum communicates with other parts of the CNS by means of nerve tracts called the
cerebellar peduncles.
The white matter of the cerebellum forms a branching network known as the
arbor vitae.
The portion of the cerebellum that is involved in balance and eye movements is the
flocculonodular lobe
Smooth, flowing movements are the result of fine motor coordination in the
lateral cerebellar hemispheres
The following are a function of the cerebellum
help in the maintenance of muscle tone
control skeletal muscles to maintain balance
control of posture, locomotion, and fine motor coordination
A person with a lesion in the brain exhibited the following manifestations: normal tension in skeletal
muscle, disturbed fine motor control, exhibited tremors when reaching for objects. What part of the brain is
most likely damaged?
the cerebellum
The stalk that connects the hypothalamus to the hypophysis (or pituitary gland) is the
infundibulum.
The intermediate mass connects the two portions of the
thalamus.
The habenular nuclei and pineal body are both found in the
epithalamus.
The following are true
The thalamus controls many endocrine functions.
Most sensory input that ascends through the spinal cord and brainstem projects to the
thalamus.
The mammillary bodies
are involved in emotional responses to odors.
Injury to the thalamus would
probably overload the cerebrum with sensory information
An individual who has an eating disorder along with intense thirst and wildly varying body temperatures
may have a dysfunction of thee
hypothalamus.
The following brain areas serves as the major control center of the autonomic nervous system and endocrine systems
hypothalamus
The "thermostat" or nucleus that monitors blood temperature is located in th
Hypothalamus
A 13-year-old child exhibited retarded growth, reduced metabolism, lack of normal reproductive gland
development, inability to regulate water intake or water elimination from the body, and an uncontrolled
appetite. What part of the child's brain is most likely involved')
reticular formation
Arrange the following in order from the diencephalon downward.
1) midbrain
2) pons
3) medulla
4) spinal cord
The following feelings is not related to hypothalamic function?
pleasant memories
The following is a function of the hypothalamus?
involved in psychosomatic illnesses
The pineal body
appears to playa role in controlling the onset of puberty
The cerebral gyri increase
the surface area of the cortex.
The central sulcus separates the
frontal and parietal lobes
The lateral fissure separates the __ from the rest of the cerebrum
temporal lobe
The following are a lobe of the cerebrum
parietal
frontal
occipital
temporal
The gray matter on the outer surface of the cerebrum is called the
cortex.
During brain surgery, the superior portion of the postcentral gyrus of a patient is stimulated. The patient is most likely to
feel pressure on his toes.
If an animal has had its cerebrum removed, it cannot
see
Associati on fibers connect
areas of the cerebral cortex wi thin the same hemisphere.
Tracts of white matter that connect the right and left hemispheres are composed of
commissural fibers.
What is the large C-shaped mass of white matter that consists of nerve fibers that connect the two cerebral hemispheres
corpus callosum
The cerebral medulla
consists of many nerve tracts of white matter beneath the cerebral cortex.
The primary somatic sensory or general sensory area is located in
the postcentral gyrus.
Lesions of the basal nuclei could cause
a slight shaking of the hands or head.
The limbic system
is associated with basic survival instincts of food acquisition and reproduction.
The most superficial meningeal layer is
the dura mater.
Cerebrospinal fluid fills the
subarachnoid space
Cerebrospinal fluid is produced by the __ and is reabsorbed by the __ .
choroid plexus, arachnoid granulation
If cerebrospinal fluid does not drain properly,
the excess fluid exerts pressure on the brain.
Water-soluble molecules such as glucose and amino acids move across the blood-brain barrier by
mediated transport
crying because you broke a present
FACIAL
chewing the Christmas turkey
TRIGEMINAL
smelling cookies baking in the oven
OLFACTORY
seeing snowflakes
OPTIC
smiling for Christmas picture
FACIAL
bowing your head
ACCESSORY
Listening to Christmas carol
VESTIBULCOCHLEAR
singing Christmas carols
VAGUS
raising the eyelids in surprise
OCULOMOTOR
having a toothache from eating too many cherry chocolates
TRIGEMINAL
focusing the lens of your eye so you can read this test
OCULOMOTOR
tasting a piece of Christmas pie -
FACIAL, GLOSSOPHARYNGEAL