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Ch 10: The Corticospinal Tract & Internal Capsule
Author:
M.D.Stephen VoronLecturer
University of Utah
USA
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1.1 An introduction to the human body Read Online
1.2 The chemical level of organization Read Online
After studying this chapter, you will be able to:
Though you may approach a course in anatomy and physiology strictly as a requirement for your field of study, the knowledge you gain in this course will serve you well in many aspects of your life. An understanding of anatomy and physiology is not only fundamental to any career in the health professions, but it can also benefit your own health. Familiarity with the human body can help you make healthful choices and prompt you to take appropriate action when signs of illness arise. Your knowledge in this field will help you understand news about nutrition, medications, medical devices, and procedures and help you understand genetic or infectious diseases. At some point, everyone will have a problem with some aspect of his or her body and your knowledge can help you to be a better parent, spouse, partner, friend, colleague, or caregiver.
This chapter begins with an overview of anatomy and physiology and a preview of the body regions and functions. It then covers the characteristics of life and how the body works to maintain stable conditions. It introduces a set of standard terms for body structures and for planes and positions in the body that will serve as a foundation for more comprehensive information covered later in the text. It ends with examples of medical imaging used to see inside the living body.
Question: What deficit(s) result from interrupting these neurons in area 4?
Choices:
Spasticity.
Hypertonia.
Hyperreflexia.
Pathological reflexes.
All of the above.
Question: Which limb of the internal capsule contains cortical afferents?
Choices:
Anterior limb.
Posterior limb.
Both.
Neither.
Question: Which of the following is not correct?
Choices:
The center for lateral gaze is in the pons.
The center for vertical gaze is in the pretectal area.
Looking upward is not dependent on the mlf.
Looking upward is not dependent on the pons.
The lateral and vertical gaze centers are located near each other in the pons.
Question: These cells, whose axons terminate directly on skeletal muscle fibers are also known as 'lower motor neurons.'
Choices:
True.
False.
Question: The role of the corpus callosum can best be defined as
Choices:
Association cortical connections from all areas.
Intracortical connections between homotopic areas of each hemisphere.
A dorsal extension of the internal capsule.
A pathway for interhemispheric transfer from the nondominant to the dominant hemisphere.
A pathway to insure that the same information goes to each hemisphere.
Question: A lesion placed in which the following would have the most devastating clinical effects to the patient?
Choices:
The precentral gyrus of the cerebral cortex.
The anterior limb of the internal capsule.
The posterior limb of the internal capsule.
The anterolateral system.
The postcentral gyrus of the cerebral cortex.
Question: Cortical afferents in the internal capsule have their cell bodies located in:
Choices:
The dorsal horn.
The dorsal column nuclei.
The thalamic nuclei.
The cerebral cortex.
Question: All of the following are sensory radiations from this structure EXCEPT:
Choices:
Olfactory radiations.
Optic radiations.
Auditory radiations.
Somatosensory radiations.