54 terms

Anatomy & Phisiology II

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