1. Subarachnoid hemorrhage is most commonly caused by
A. Aneurysmal rupture
B. Arteriosclerotic vascular disease
C. Arteriovenous vascular malformation rupture
D. Amyloid angiopathy - answer-1. A: Aneurysms are almost always located in the subarachnoid space, and are the most common cause. Ch...
SCRN CHAPTER 3 ANATOMY AND
PHYSIOLOGY
1. Subarachnoid hemorrhage is most commonly caused by
A. Aneurysmal rupture
B. Arteriosclerotic vascular disease
C. Arteriovenous vascular malformation rupture
D. Amyloid angiopathy - answer-1. A: Aneurysms are almost always located
in the subarachnoid space, and are the most common cause. Choices C and
D result in intracerebral hemorrhage (ICH), not subarachnoid hemorrhage
(SAH), and choice B is a risk for ischemic stroke, not hemorrhagic stroke.
2. The dural fold that separates the cerebrum from the cerebellum is the?
A. Corpus callosum
B. Tentorium
C. Falx
D. Posterior fossa - answer-2. B: The tentorium is also called the tentorium
cerebelli, and means "tent of the cerebellum," so picture it as a tent over the
cerebellum, separating it from the cerebrum. The corpus callosum is a band
of fibers that connects the two hemispheres; the falx is a dural fold that
separates the two hemispheres; and the posterior fossa is the space where
the brainstem
and cerebellum lie.
3. The innermost meningeal layer that fits the brain like a latex glove hand is
the
A. Dura mater
B. Arachnoid mater
C. Central mater
D. Pia mater - answer-3. D: There are three layers of the meninges, the
membrane covering the brain. The outermost layer is the dura mater, the
middle layer is the arachnoid mater, and the innermost layer is the pia
mater. There is no such thing as a central mater.
4. The frontal lobe contains which of the following?
A. Wernicke's area
B. Motor strip
C Sensory strip
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1
D. Globus pallidus - answer-4. B. The motor strip is located at the back of the
frontal lobe. Wernicke's area is located at the junction of the temporal and
parietal lobes, the sensory strip-although it lies right next to the motor stripis
located at the front of the parietal lobe; the globus pallidus is in the basal
ganglia, a subcortical structure.
5. The postcentral gyrus is located in the
A. Parietal lobe
B. Occipital lobe
C. Pons
D. Cerebellum - answer-5. A: The postcentral gyrus is where the sensory strip
lies--in the parietal lobe.
6. Which of the following best describes the homunculus?
A. Portion of midbrain responsible for being awake and aware
B. Another name for the large third ventricle
C. Diagram that represents the optic path from frontal to occipital lobe
D. Diagram that depicts what body parts are controlled by the motor sensory
strips is the relay station between the cerebral cortex and the - answer-6. D:
The homunculus comes from the a 16th century alchemist's description of a
"little man" and this term has been used to describe the pattern of the motor
and sensory control of the body.
7. The _______ is the relay station between the cerebral cortex and the
brainstem
A. Thalamus
B. Hypothalamus
C. Putamen
D. Circle of Willis - answer-7. A: The thalamus relays auditory,
somatosensory, visual, and gustatory signals between the cortex and the
brainstem structures.
8. The diencephalon refers to which structures?
A. Midbrain, pons, medulla
B. Basal ganglia, putamen, internal capsule
C. Thalamus, hypothalamus, pineal gland
D. Thalamus, globus pallidus, caudate nucleus - answer-8. C: The thalamus,
hypothalamus, and pineal gland are referred to as the diencephalon, which
relays sensory information among brain regions and controls many
autonomic functions of the peripheral nervous system.
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