Chapter 14

25 July 2022
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processes visual data
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midbrain
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conscious thought
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cerebrum
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relays sensory information to the thalamus and connects the cerebellum to the cerebrum
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pons
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coordination of complex motor patterns
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cerebellum
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The adult human brain contains almost ________ of the body's neural tissue.
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97
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Autonomic centers that control blood pressure, heart rate, and digestion are located in the
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medulla oblongata
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Sensory information is processed and relayed to the cerebrum by the
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thalamus
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A neural cortex is found on the surface of the
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cerebrum
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The elevated ridges of the cerebrum are called
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gyri
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In the adult brain, which is the largest region?
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cerebrum
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Which of the following ventricles is found under the corpus callosum?
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lateral ventricles
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Which passageway connects the third and fourth ventricles?
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cerebral aquaduct
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Identify the passageway found in the spinal cord that is continuous with the ventricles.
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central canal
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T/F Cerebrospinal fluid is produced within the ventricles.
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true
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T/F the ventricles are always interconnected
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true
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cranial nerve #1
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olfactory nerve
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Which of the following areas takes visual information from one side of the body and conveys it to the opposite side?
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optic chiasm
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Which of the following structures is not part of the central nervous system?
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optic nerve
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Which of the following glands can be observed on the ventral surface of the sheep brain?
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pituitary gland
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Which of the following structures attach the pituitary gland to the brain?
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infundibulum
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T/F All three regions of the brain stem can be observed on the ventral surface of the brain.
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true
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T/F The cerebellum is present on the ventral surface of the sheep brain.
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false, dorsal
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What structure connects the right and left cerebral hemispheres?
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corpus collosum
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Which of the following areas form the central core of the brain?
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thalamus
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Where is the arbor vitae located?
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cerebellum
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What part of the corpora quadrigemina is clearly observed in a midsagittal section?
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superior colliculus
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Which region of the brain is necessary for consciousness?
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cerebrum
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Which ventricles are divided by the septum pellucidum?
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lateral ventricles
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What type of tissue makes up the cerebral cortex?
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gray matter
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What is the function of white matter?
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transmits messages
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T/F The composition of gray matter includes neuron cell bodies.
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True
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T/F White matter has a fatty consistency.
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true
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T/F The brain is a solid organ that lacks cavities.
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false, ventricles
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Name the membranous encasement surrounding the brain.
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meninges
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Which region of the brain contains gyri and sulci?
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cerebrum
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Which of the following landmarks separate the cerebrum from the cerebellum?
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transverse fissure
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Which of the following landmarks divides the cerebrum in half?
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longitudinal fissure
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The meninges consist of ___ layers.
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3
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Which of the following is the outer layer of the meninges?
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dura mater
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how many major regions are contained within the diencephalon?
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3
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Which part of the diencephalon is connected to the pituitary gland?
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hypothalamus
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Which region acts as a relay center for sensory messages ascending to the cerebrum?
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thalamus
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Which region of the diencephalon contains the pineal body?
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epithalamus
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T/F The pineal body secretes melanocyte stimulating hormone (MSH)
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false, melatonin
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T/F The diencephalon is found in between the brain stem and the cerebrum.
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true
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How many regions make up the brain stem?
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3
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Which area of the brain stem is in contact with the spinal cord?
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medulla oblongata
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Which region contains the corpora quadrigemina?
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midbrain
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Which ventricle is located within the brain stem?
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fourth
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What structure is covered by many blood vessels and adheres tightly to the surface of the brain?
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pia mater
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Cerebrospinal fluid
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is secreted by ependymal cells
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The choroid plexus is composed of
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blood vessels
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Hydrocephalus, or "water on the brain," may result from
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blockage of CSF circulation or excessive CSF production.
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Chambers within the brain that contain cerebrospinal fluid are called
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ventricles
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cerebrospinal fluid (CSF) leaves the central nervous system (CNS) and enters the circulation at the __________.
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arachnoid granulations
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Which cells are most directly associated with the formation of CSF?
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ependymal cells
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What is the last spot where CSF circulates before being resorbed by the circulatory system?
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arachniod villi
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The cerebrospinal fluid (CSF) circulates within the __________.
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subarachnoid space
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The control of heart rate and blood pressure is based in the
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medulla oblongata
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The respiratory rhythmicity center is located in the
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medulla oblongata
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Cardiovascular centers located in the ________ adjust the heart rate, the strength of cardiac contractions, and the flow of blood through the peripheral tissues.
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medulla oblongata
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Overseeing the postural muscles of the body and making rapid adjustments to maintain balance and equilibrium are functions of the
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cerebellum
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The white matter of the cerebellum forms the
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arbor vitae
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The presence of many large, highly-branched Purkinje cells in a sample of brain tissue indicates that it came from the
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cerebellar cortex
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The folds of the surface of the cerebrum
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increase the surface area of the cerebrum
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The huge, highly-branched neurons known as Purkinje cells are found in the __________.
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cerebellar cortex
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Stimulation of the reticular activating system results in
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increased consciousness
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The medulla oblongata relays auditory information to the
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inferior colliculi
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The corpora quadrigemina is composed of the
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superior and inferior colliculi
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Damage to the corpora quadrigemina would interfere with
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visual and auditory reflex movements of the head and neck.
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If you are reading and you unexpectedly hear a loud noise, your head generally snaps up. Which portion of the midbrain is most likely to be responsible for this reflexive motion?
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the inferior colliculi
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Injury to this center in the mesencephalon may lead to Parkinson's disease.
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substantia nigra