The Connection of the Vestibular System with the Third, Fourth

question 37

Multiple Choice

The connection of the vestibular system with the third, fourth, and sixth cranial nerves allows the vestibular system to

• A) adjust eye movements to compensate for head movements.
• B) maintain posture.
• C) provide inhibitory feedback onto the auditory system during exposure to loud stimuli.
• D) generate a cue that promotes the sensation of depth in a visual scene.
• E) localize body movements in space.

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Definitions:

Isthmus of Panama

A narrow strip of land connecting North and South America, significantly impacting ocean currents and global climate patterns, as well as migration of species.

Geographic Barrier

A physical or environmental feature that prevents the free movement of species, leading to genetic isolation and potentially speciation.

Allopatry

Occurs when populations are in separate, nonoverlapping geographic areas (that is, they are separated by geographic barriers to gene flow).

Horizontal Gene Transfer

The movement of genetic material between unicellular and/or multicellular organisms other than by the transmission of DNA from parent to offspring.