Sense of Equilibrium

Part A

Complete the following statements:

1. The organs of static equilibrium are located within two expanded chambers of the membranous labyrinth called the_and the saccule.

2. All of the balance organs are found within the_bone of the skull.

3. The receptor cells of these organs are found in the wall of the membranous labyrinth in a structure called the

4. Otoliths are small grains composed of_.

5. Sensory impulses travel from the organs of equilibrium to the brain on the_nerve.

6. The sensory organ of a semicircular canal lies within a swelling of the canal called the_

7. The sensory organ within a semicircular canal is called a_.

8. The_of this sensory organ consists of a dome-shaped gelatinous mass.

9. When the head is moved, the fluid inside the membranous portion of a semicircular canal tends to remain stationary because of the_of the fluid.

10. Parts of the_of the brain interpret impulses from the semicircular canals.

Part B—Tests of Equilibrium

1. Vision and equilibrium test results:

a. When the eyes are open, what sensory organs provide information needed to maintain equilibrium? _

b. When the eyes are closed, what sensory organs provide such information?

2. Romberg test results:

a. Record the test results in the following table: Conditions Maximal Movement (cm)

Back toward board, eyes open

Back toward board, eyes closed

Side toward board, eyes open

Side toward board, eyes closed

b. Did the test subject's unsteadiness increase when the eyes were closed?_What is the significance of this observation? _

c. Why would you expect a person with impairment of the organs of equilibrium to become more unsteady when the eyes are closed? _

a. Record the test results in the following table: Position of Head Description of Eye Movements Time for Movement to Cease

Tilted 30° forward

Tilted 90° onto shoulder

Tilted forward, chin on chest

b. Summarize the results of this test.

b. Summarize the results of this test.

Critical Thinking Application

What additional sensory information would you expect a person with impairment of organs of equilibrium to use to supplement their relative lack of some sensory information?

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

Get My Free Ebook


Responses

  • gorbulas
    Why would a person with impairments of organs of equilibrium become unsteady when eyes are closed?
    5 years ago
  • ilmari
    When eyes are open what sensory organs provide information needed to maintain equilibrium?
    4 years ago
  • Mitchell
    When the eyes are closed what sensory organs?
    3 years ago
  • eustorgio
    Which of the following is the receptor organ for static equilibrium?
    3 years ago
  • matilda
    Is a domeshaped gelatinous mass within the sensory organ for dynamic equilibrium.?
    3 years ago
  • FRE-WEINI SAMUEL
    When the eyes are open, what sensory organs provide information needed to maintain equlibrium?
    3 years ago
  • nicholas white
    When eyes are closed what sensory organs provide information?
    3 years ago
  • daniel
    What additional sensory information would you expect a person with impairment?
    3 years ago
  • Obo
    What is the sense organ for static equilibrium?
    2 years ago
  • kody mckay
    When the eyes are open, what sensory organs provide infrmation needed to maintain equilibrium?
    2 years ago
  • veronica
    Did the test subjects unsteadiness increase when the eyes were closed?
    2 years ago
  • Anna-Liisa
    Where organs of static and dynamic equilibrium are located?
    7 months ago
  • marina
    When the eyes are closed, what sensory organs provide information needed to maintain equilibrium?
    5 months ago

Post a comment