Ch 14 Brain & Cranial Nerves
1) The adult human brain contains almost ________ of the body's neural tissue.
A) 15 percent
B) 25 percent
C) 68 percent
D) 97 percent
E) 35 percent
D) 97 percent
2) Male brains are typically ________ compared to female brains.
A) larger
3) During embryonic development, which of the following secondary brain vesicles will form the cerebrum?
A) telencephalon
B) diencephalon
C) mesencephalon
D) metencephalon
E) myelencephalon
A) telencephalon
4) Which of these is not one of the main divisions of the adult brain?
C) prosencephalon
5) Which of the following lies between the cerebrum and the brain stem?
A) medulla oblongata
B) pons
C) mesencephalon
D) diencephalon
E) cerebellum
D) diencephalon
6) The floor of the diencephalon is formed by the
A) hypothalamus
7) The tracts that connect the cerebellum to the brain stem are located in the
B) pons
8) Autonomic centers that control blood pressure, heart rate, and digestion are located in the
A) medulla oblongata
9) The cerebellum and pons develop from the
D) metencephalon
10) Sensory information is processed and relayed to the cerebrum by the
D) thalamus
11) A neural cortex is found on the surface of the
A) cerebrum
12) As you ascend from the medulla oblongata to the cerebrum, the functions of each successive level become
A) more complex
13) The ________ provides the principal link between the nervous and endocrine systems.
14) The thin partition that separates the first and second ventricles is the
B) septum pellucidum
15) The most obvious feature that one notices about the cerebrum is the
B) extensiveness of the gyri and sulci
16) The third and fourth ventricles are linked by a slender canal designated as the
C) cerebral aqueduct
17) The ventricle associated with the pons and upper medulla is the
D) fourth
18) Specialized ________ cells form the secretory component of the choroid plexus.
B) ependymal
19) The dural sinuses are located in the
D) dural folds
20) What structure is covered by many blood vessels and adheres tightly to the surface of the brain?
A) pia mater
21) The brain requires a substantial blood supply. The vessels that deliver blood to the brain are the
D) internal carotid and vertebral arteries
22) Which of the following is a property of the blood-brain barrier?
E) All of the answers are correct
23) The dural fold that projects into the longitudinal fissure between cerebral hemispheres is called the
B) falx cerebri
24) Cerebrospinal fluid
A) is secreted by ependymal cells
25) Which statement is true regarding the meninges and cerebrospinal fluid of the spinal cord and brain?
E) The choroid plexuses are located only within the brain, not within the spinal cord
26) The choroid plexus is composed of
B) blood vessels
27) Cerebrospinal fluid enters the blood circulation at the
C) arachnoid granulations
28) Which of the following help to protect the brain?
29) What contains a spider web-like network of cells and fibers through which cerebrospinal fluid flows?
D) subarachnoid space
30) Ependymal cells work to
E) All of the answers are correct
31) A brain hemorrhage is life-threatening because
E) All of these problems are related to brain hemorrhages
32) Which of the following is not a function of cerebrospinal fluid?
D) provides ATP for impulse transmission
33) Which statement is true regarding cerebrospinal fluid?
D) If CSF is not properly resorbed, the result would be hydrocephalus.
34) The cells that cover the outer surfaces of CNS capillary endothelial cells are the
B) astrocytes.
35) The layer of the meninges that closely follows every gyrus and sulcus is the
A) pia mater
36) Hydrocephalus, or "water on the brain," may result from
E) blockage of CSF circulation or excessive CSF production.
46) The control of heart rate and blood pressure is based in the
D) medulla oblongata
47) The medulla oblongata regulates
E) blood pressure and respiration
48) The respiratory rhythmicity center is located in the
C) medulla oblongata
49) Damage to the medulla oblongata can result in death because
B) the vital centers for blood pressure, heart rate, and breathing are located there.
50) Jane, a 79-year-old woman, has been diagnosed with a tumor in the brain. She has lost some sensory and motor functions associated with the face, like control of facial muscles for emotion and various sensory functions like taste. In addition, she has some hearing loss and balance problems. The location of the tumor is likely to be the
E) pons
51) If the pons was damaged, which of the following functions would be affected?
A) breathing
52) Overseeing the postural muscles of the body and making rapid adjustments to maintain balance and equilibrium are functions of the
C) cerebellum
53) The cerebellar hemispheres are separated by a band of cortex called the
D) vermis
54) The white matter of the cerebellum forms the
B) arbor vitae
55) The presence of many large, highly-branched Purkinje cells in a sample of brain tissue indicates that it came from the
D) cerebellar cortex.
56) The cerebellum can be permanently damaged by stroke or temporarily affected by drugs or alcohol. The resulting disturbance in motor control is known as
A) ataxia
57) Stimulation of the reticular activating system results in
A) increased consciousness
58) The medulla oblongata relays auditory information to the
E) inferior colliculi
59) The structure of the brain that carries ascending sensory information to the thalamus is the
A) midbrain
60) Nerve fiber bundles on the ventrolateral surface of the mesencephalon are the
C) cerebral peduncles
61) The tectum of the mesencephalon contains the
C) superior and inferior colliculi.
62) The corpora quadrigemina is composed of the
B) superior and inferior colliculi.
63) The reflex movement of the head toward a loud noise is directed by the mesencephalon. Which nuclei accomplish this?
E) inferior colliculi
64) Damage to the corpora quadrigemina would interfere with
C) visual and auditory reflex movements of the head and neck.
65) Examination of a tissue sample from the central nervous system reveals many darkly pigmented cells. This tissue probably came from the
D) substantia nigra
66) The pineal gland is part of the
B) diencephalon
67) Which of the following is a property of the mamillary bodies?
E) All of the answers are correct
68) The hypothalamus is a key player in the endocrine system because
A) it controls the pituitary gland directly underneath it.
69) Which of the following is a function of the hypothalamus?
E) All of the answers are correct
70) Which of the following is/are true of the epithalamus?
B) forms the roof of the diencephalon
71) The anterior nuclei of the thalamus
A) are part of the limbic system
72) The medial nuclei of the thalamus
B) connect emotional centers in the hypothalamus with the frontal lobe
73) The posterior nuclei of the thalamus includes the
B) lateral and medial geniculate nuclei
74) The optic tracts carry visual information from the retina to the
B) lateral geniculates
75) Which of the following is a function of the thalamus?
C) process sensory information and relay it to the cerebrum
76) The thalamus is often called the "air traffic controller" of the brain because it
D) determines the routing of incoming sensory information to the correct cerebral cortex area.
77) The mammillary bodies of the hypothalamus
C) control feeding reflexes
78) The ________ filters and relays sensory information to cerebral cortex.
B) thalamus
79) Damage to the preoptic area of the hypothalamus leads to which problem?
C) reduced ability to regulate body temperature
80) Joe begins to experience mood swings and disturbed thirst and hunger. Imaging studies indicate that a brain tumor is the likely cause of these disorders. In what part of the brain is the tumor most likely located?
D) hypothalamus
81) Which of the following is not a component of the limbic system?
C) globus pallidus
82) Which of the following is not a property of the limbic system?
B) functions in maintaining homeostasis in cold weather
83) The ________ is important in storage and recall of new long-term memories.
D) hippocampus
84) A tract of white matter that connects the hippocampus with the hypothalamus is the
E) fornix.
85) Terry suffers from dissociation of memories from their emotional content as the result of an automobile accident. What system of the brain is probably damaged?
C) the limbic system
86) Damage to the substantia nigra causes a decrease in the neurotransmitter dopamine. This causes a gradual, generalized increase in muscle tone, which is the main symptom of
A) Parkinson's disease.
87) The two cerebral hemispheres are separated by the
A) longitudinal fissure
88) Divisions of the cerebral hemispheres that are named after the overlying skull bones are
C) lobes
89) The cerebral area posterior to the central sulcus is the
A) parietal lobe
90) The region(s) of the cerebral cortex superior to the lateral sulcus is/are the
E) parietal and frontal lobes
91) The region of the cerebral cortex that is medial and deep to the temporal lobe is the
E) insula
92) The primary motor cortex is the surface of the
B) precentral gyrus
93) The sense of taste projects to the gustatory cortex located in the ________ and ________.
C) insula; frontal lobe
94) The corpus callosum is composed of
D) commissural fibers
95) The surface of the postcentral gyrus contains the ________ cortex.
A) primary sensory
96) Commissural fibers
D) interconnect areas of cerebral cortex
97) The visual cortex is located in the
D) occipital lobe
98) The auditory cortex is located in the
C) temporal lobe
99) Cortical regions that interpret sensory information or coordinate motor responses are called ________ areas.
C) association
100) The region of the brain responsible for predicting the consequence of events or actions is the
A) prefrontal cerebral cortex
101) Parkinson's disease is the result of
C) inadequate production of dopamine by substantia nigra neurons
102) After suffering a stroke, Mary finds that she cannot move her right arm. This would suggest that the stroke damage is in the area of the ________ lobe.
B) left frontal
103) After suffering a blow to the back of the head, Phil loses his vision. The blow probably caused damage to the
E) occipital lobe
104) The general interpretive area
D) allows us to interpret what is read or heard
105) Difficulties in estimating temporal relationships between events may stem from damage to
A) the prefrontal cortex
106) Within each hemisphere, deep to the floor of the lateral ventricle, you will find the
B) basal nuclei
107) Integrative centers of the brain
E) All of the answers are correct
108) Which cerebral area is involved with judgment and predictive abilities?
C) prefrontal cortex
109) The highest levels of information processing occur in the
A) cerebrum
110) If the corpus callosum is surgically cut,
E) All of the answers are correct
111) A person with a damaged visual association area may be
D) able to see letters but unable to associate them into words
112) Jane suffers from chronic seizures and in order to control the problem undergoes surgery in which the fibers of the corpus callosum are cut. As a result of this surgery she would likely be unable to
C) verbally identify an object placed in her left hand
113) ________ centers receive information from many association areas and direct extremely complex motor activities such as speech.
B) Integrative
114) Integrative centers concerned with the performance of complex processes are restricted to either the left or the right hemisphere. These complex processes include
E) All of the answers are correct.
115) What symptoms would you expect to see in a patient with damage to the basal nuclei?
D) problems in rhythmic movements related to skeletal muscles
116) Bob is struck on the left side of the head and is knocked unconscious. When he recovers consciousness, he can hear individual words but cannot understand the meaning of phrases or sentences. This implies damage to his
B) general interpretive area.
117) Damage to the premotor cortex of the frontal lobe would interfere with the ability to
D) play the piano
118) Excitation of neurons in the basal nuclei would lead to
A) increased muscle tone
119) ________ is a temporary cerebral disorder accompanied by abnormal movements, unusual sensations, and/or inappropriate behavior.
E) A seizure
120) A(n) ________ is a printed record of the brain's electrical activity over a period of time.
B) electroencephalogram
121) ________ is a disorder affecting the ability to speak or read.
A) Aphasia
122) The basal nuclei
B) provide the general pattern and rhythm for movements such as walking.
123) Higher-order functions
E) All of the answers are correct
124) The only sensation that is received directly by the cerebrum is
A) olfaction
125) Gustatory information reaches the brain by way of
E) cranial nerve IX
126) ________ is a condition resulting from an inflammation of a facial nerve.
B) Bell's palsy
127) There are ________ pairs of cranial nerves.
C) 12
128) Droopy eyelids and double vision can result from injury to the ________ nerve.
B) oculomotor
129) The cranial nerves that innervate the eye muscles are
B) III, IV, and VI
130) The cranial nerve that has three major branches is the
D) trigeminal
131) Sensory innervation of the lower teeth and gums is by the ________ nerve.
C) mandibular branch of the trigeminal
132) Difficulty in swallowing may be a sign of damage to which cranial nerve(s)?
E) glossopharyngeal and vagus
133) A reflex that is used to assess the sensory function of the trigeminal nerve is the ________ reflex.
A) corneal
134) Which of the cranial nerves is named for the fact that it "wanders," that is, innervates structures throughout the thorax and abdomen?
C) X
135) Which sensation(s) does the vestibulocochlear nerve carry?
136) Jean needs to have a tooth in her mandible filled. Her dentist injects a local anesthetic to block pain afferents in one of her cranial nerves. What cranial nerve does the dentist numb?
B) trigeminal
137) Tic douloureux is
E) All of the answers are correct
138) You suspect your friend has damage to cranial nerve I when he is unable to
A) smell his food
139) Olfactory receptors send axons through the cribriform plate and synapse on neurons in the
D) olfactory bulb
140) At the optic chiasm,
A) axons from the medial halves of each retina cross
141) A patient develops a tumor of a cranial nerve that leads to difficulty in speaking from a loss of tongue movement. Which cranial nerve is affected?
B) hypoglossal
142) Which of the following symptoms would you associate with damage to the spinal accessory nerve?
C) weakness of the sternocleidomastoid muscle
143) The patient has the following symptoms: change in vocal tone, problems swallowing, inability to control urination, erratic heart rate, and gastric problems. You would identify the problem as being related to the
1) The medulla oblongata, pons, and midbrain comprise the
B) brain stem
2) The folds of the cerebrum are called
D) gyri.
3) The wall between the lateral ventricles is called the
E) septum pellucidum
4) The passageway between the lateral ventricles and the third ventricle is the
B) interventricular foramen
5) To return CSF to circulation, arachnoid granulations extend into the
B) superior sagittal sinus
6) In each ventricle is a blood vessel network called the ________ that produces cerebrospinal fluid.
A) choroid plexus
7) Chambers within the brain that contain cerebrospinal fluid are called
E) ventricles
8) Two large venous sinuses, the sagittal sinuses, lie within a dural fold called the
C) falx cerebri
9) Cardiovascular centers located in the ________ adjust the heart rate, the strength of cardiac contractions, and the flow of blood through the peripheral tissues.
B) medulla oblongata
10) The term used to describe the crossing over of a tract to the side of the nervous system opposite to where the axons originated is
A) decussation
11) The folds of the surface of the cerebrum
A) increase the surface area of the cerebrum
12) The white matter of the cerebellum forms a branching array called the
E) arbor vitae
13) The ________ are the four masses on the posterior of the midbrain.
E) corpora quadrigemina
14) The mesencephalon contains the headquarters of the ________, a specialized component of the reticular formation that controls alertness and attention.
D) reticular activating system
15) The ________ connects the two sides of the cerebrum.
E) commissural fibers
16) Emotions and behavioral drives are associated with the
E) hypothalamus
17) Stimulation of the ________ within the hypothalamus produces the sensation of hunger.
B) feeding center
18) The ________, a narrow stalk, connects the hypothalamus to the pituitary gland.
B) infundibulum
19) In most cases, the general interpretive center and the speech center are located in
A) the left cerebral hemisphere
20) The dominant cerebral hemisphere of the brain
C) performs analytical tasks
21) A person who has difficulty comprehending and using written language suffers from the disorder known as
<p>B) dyslexia.</p> <br>
22) Cortical regions that interpret sensory information or coordinate motor responses are called ________ areas.
A) association
23) The white structure that connects the cerebral hemispheres is the
E) corpus callosum
24) The optic nerve crosses at the
D) optic chiasm