Fundamentals of Sectional Anatomy: An Imaging Approach
2nd Edition
ISBN: 9781133960867
Author: Denise L. Lazo
Publisher: Cengage Learning
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Ascending pathways en route to thalamus include
a. Medial lemniscus
b. Spinothalamic / trigeminothalamic tracts
c. Cerebellothalamic fibers from dentate nucleus
d. All of the above
Which of the following is most correct:
A. Most spinal nerves contain both somatic and autonomic fibers.
B. Most body responses to changing internal and external environments involve both enhanced skeletal muscle and visceral activity
C. Somatic and autonomic branches are not truly individual entities, function is well integrated.
D. Higher brain centers regulate both somatic and autonomic function.
E. All these are correct.
Which of these is caudal to the hypothalamus? a. the thalamus b. the optic chiasm c. the cerebral aqueduct d. the pituitary gland e. the corpus callosum
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- Tertiary neurons in both the spinothalamic tract and the dorsal-column/medial-lemniscal systema. project to the somatosensory cortex.b. cross to the opposite side in the medulla oblongata.c. are found in the spinal cord.d. connect to quaternary neurons in the thalamus.e. are part of a descending pathwayarrow_forwardMark the following statements as true of false. If a statement is false, correct it to make a true statement. a. Ependymal cells regulate the composition and movement of cerebrospinal fluid. b. Schwann cells make myelin in the peripheral nervous system c. Microglia are neuroglial cells with an immune function. d. Oligodendrocytes repair damaged axons in the peripheral nervous system. e. Astrocytes regulate the extracellular environment of the brain and are key components of the blood-brain barrier. f. Oligodendrocytes and Schwann cells perform similar functions in different parts of the nervous system.arrow_forwardNOTE THESE ARE ALL ONE QUESTION GROUP AND SHOULD BE ANSWERED AS SUCH Activation of the sympathetic nervous system __________________. A. increases the flow of watery saliva B. stimulates peristaltic contractions of the intestinal system C. allows the body to relax rather than prepare for fight or flight D. slows heartbeat and lowers blood pressure E. causes the pupils to dilate The autonomic subdivision of the vertebrate nervous system innervates all but which of the following? A. Skeletal muscles B. Intestinal muscles C. Liver D. Heart E. Pancreas The sympathetic nervous system includes the _______________. A. lumbar and sacral nerves B. cranial and sacral nerves C. cranial and thoracic nerves D. thoracic and lumbar nerves E. cervical and lumbar nerves Which of the following statements accurately defines spinal nerve? A. Cell in the deep part of the epidermis that produces the…arrow_forward
- Which of the following statements concerning the preganglionic neuronsof the ANS is true?a. All parasympathetic preganglionic neurons secrete acetylcholine.b. Only parasympathetic preganglionic neurons secrete acetylcholine.c. All sympathetic preganglionic neurons secrete norepinephrine.d. Only sympathetic preganglionic neurons secrete norepinephrine.arrow_forwardParasympathetic ganglia are located a. in a chain parallel to the spinal cord. b. in the dorsal roots of spinal nerves. c. next to or within the organs innervated. d. in the brain.arrow_forwardAll of the following cranial nerves carry parasympatheticpreganglionic nerve axons excepta. CN III (oculomotor).b. CN V (trigeminal).c. CN IX (glossopharyngeal).d. CN X (vagus)arrow_forward
- Which of the following statements is false about the choroidplexus?a. It is located within the ventricles of the brain.b. It is composed of ependymal cells and capillaries.c. It forms the blood-brain barrier.d. It produces and circulates cerebrospinal fluidarrow_forwardWhich of the following statements about cerebral white matter is false? a. Commissural fibers connect the right and left cerebral hemispheres. b. Projection fibers connect the cerebral cortex of one hemisphere with structures in the other hemisphere. c. The corpus callosum is the largest bundle of white matter in the brain. d. Association fibers connect the gyri of the cerebral cortex with one anotherarrow_forwardTo separate the brainstem from the rest of the brain, a cut would haveto be made between thea. medulla oblongata and pons.b. pons and midbrain.c. midbrain and diencephalon.d. thalamus and cerebrum.e. medulla oblongata and spinal cordarrow_forward
- The multipolar neurones are observed in the gray matter of the histological specimen of the cerebellum cross-section. According to what morphological feature does these cells attribute to multipolar? a. Size of the cells b. Shape of the terminal axon extension c. Length of the processes d. Quantity of the processes e. Shape of the perikaryonarrow_forwardWhich of the following statements is false? a. The spinothalamic tracts are part of the anterolateral system. b. Pain, temperature, and crude touch stimuli are carried by the anterolateral system. c. Descending pathways from the brain and spinal cord can make the spinal cord less receptive to pain stimuli. d. The thalamus serves as the “gateway” for entry of all special sensory stimuli into the cerebral cortex, with the exception of audition (hearing).arrow_forwardAll of the following are true regarding the descending motor tracts EXCEPT which one? A. They originate in either the cerebral cortex or brainstem. B. The pathways are generally made of a two-neuron system. C. The upper motor neuron fibers target lower motor neurons of the spinal cord or cranial nerves. D. They are involved in assisting with voluntary movement.arrow_forward
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