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Neuroanatomy 08 The Vestibular System
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.
Download MCQ Quiz PDF eBook
Question: This structure:
Choices:
Signals angular acceleration.
Is important for conjugate eye movements.
Signals orientation with respect to gravity.
Is bathed with perilymph.
Question: The medial vestibulospinal tract and MLF aid in:
Choices:
Orienting toward visual stimuli.
Maintaining visual fixation.
Stabilizing the head in space.
Vestibulocollic reflex (i.e. head bobbing when you fall asleep in lecture).
All of the above.
Question: Information from these nuclei reach consciousness in the:
Choices:
Inferior colliculus.
Inferior thalamus near VPL.
Cortex between intraparietal and postcentral sulci.
Cerebellum.
Question: What is the dorsal root ganglion equivalent for the vestibular portion of cranial nerve VIII called?
Choices:
Spiral ganglion.
Vestibular ganglion.
Celiac ganglion.
Geniculate ganglion.
Semilunar ganglion.
Question: The receptors of the utricle, saccule and semicircular canals, shown here, are examples of?
Choices:
Chemoreceptors.
Mechanoreceptors.
Nociceptors.
Question: The vestibular system can be stimulated or irritated by an infection of the inner ear or by a tumor (arrow) pressing on the vestibulocochlear nerve. Which of the following would NOT occur?
Choices:
Decreased auditory acuity.
Vertigo.
Tinnitis.
Loss of facial sensation.
Nausea.
Question: In the absence of bilateral vestibular function, orientation of the body in space is possible due to:
Choices:
Visual input.
Auditory input.
Dorsal column input.
Both A and C.
A, B, and C.
Question: At which level, in the photograph, do the primary vestibular axons enter the brain stem?
Choices:
The caudal medulla.
The pontomedullary junction.
The mid-pons.
Near the mammillary bodies in the interpeduncular fossa.
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