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Chapter 11


An elevated ridge of tissue?

surface area

Convulsions in the cerebrum are important because they increase?

neuron cell bodies

Gray matter is composed of?

myelinated fibers

White matter is composed of?

association tract

A fiber tract that provides for communication between different parts of the same cerebral hemisphere is called?

projections tract

Carries impulses to the cerebrum, and from the cerebrum to, lower CNS areas

basal nuclei

The lentiform nucleus along with the caudate nuclei are collectively called the?


site of regulation of body temperature and water balance; most important autonomic center

choroid plexus

Consciousness depends on the function of this part of the brain

corpora quadrigemina

located in the midbrain; contains reflex centers for vision and audition


Responsible for regulation of posture and coordination of complex muscular movements


Important synapse site for afferent fibers traveling to the sensory cortex

medula oblongada

Contains autonomic centers regulating blood pressure, heart rate, and respiratory rhythm, as well as coughing, sneezing, and swallowing centers

corpus callosum

Large commisure connecting the cerebral hemispheres


Fiber tract involved with olfaction

cerebral aqueduct

Connects the third and fourth ventricles


Encloses the third ventricle


The dicenephalon, including the thalamus, optic chaisma, and hypothalamus are in what region?


The medulla, pons, and cerebellum are in what region?


The cerebral hemisphere is in what region?

regulation, modulation, and refinement of voluntary motor activity

What is the function of the basal ganglia?

Fibers of the internal capsule pass between the basal nuclei, giving them a striped appearance; therefore, a striped body or corpus straitum.

What is the corpus striatum, and how is it related to the fibers of the internal capsule?

Because fibers cross over to the opposite side at the level of the medulla oblongata.

A brain hemorrhage within the region of the right internal capsule results in paralysis of the left side of the body. Explain why the left side (rather than the right side is affected?

Trauma to base of brain damage the medulla oblongata, which contains vital respiratory, cardiac, and vasomotor centers. Also, the reticular activating system, maintains consciousness, spans length of brain stem.

Explain why trauma to base of the brain is more dangerous than trauma to the frontal lobes. Which contain centers more vital to life?

corpus callsoumLeft side of brain-loss of verbal naming, mathematical func right side of brain - loss of dreams, mute, can't controll left side of body.

In split brain experiments, the main commisure connecting the cerebral hemispheres is cut. First name this commissure.

dura mater

outermost menix covering the brain, composed of tough fibrous connecive tissue

pia meter

innermost menix covering the brain, delicate and highly vascular

arachnoid villi

structures instrumental in returning cerebrospinal fluid to the venous blood in the dural sinuses

choroid plexus

structure that forms the cerebrospinal fluid

arachnoid mater

middle meninx, like a cobweb in structure

dura mater

its outer later forms the periosteum of the skull

falax cerebri

a dural fold that attaches the cerebrum to the crista galli of the skull

tentorium cerebelli

a dural fold separating the cerebrum from the cerebellum

central cancal, subarachnoid space, arachnoid villi, dural sinuses

Cerebrospinal fluid flows from the fourth ventricle into____of the spinal cord and the ___ space surrounding the brain and spinal cord. From this space it drains through the ____and the ____?

accessory XI

rotating the head

olfactory I

smelling a flower

oculomotor III

raising the eyelids

vagus X

pupillary constriction

facial VII

involved in Bell's palsy (facial paralysis)

trigeminal V

chewing food

vestibulocohlear VIII

listening to music

vestibulocohlear VIII


facial VIII

secretion of saliva

facial VIII

tasting well seasoned food

oculumotor nerve (III), trochlear nerve (IV), abducens nerve (VI)

involved in rolling the eye

trigeminal V

feeling a toothache

optic II

reading the newspaper

olfactory (I) , optic (II) , vestibulocochlear nerve (VIII)

purely sensory in function


auditory area


primary motor area

parietal lobe

primary sensory area


olfactory area


visual area


Broca's area

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