What Structure of the Ear Joins the Nasopharynx and the Tympanic

question 1

Multiple Choice

What structure of the ear joins the nasopharynx and the tympanic cavity and allows for the equalization of the air pressure in the inner ear with the atmospheric pressure?

• A) The auditory ossicles
• B) The eustachian tube
• C) The external ear
• D) The cochlea

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Definitions:

Integuments

Protective layers of tissue covering the body of an organism, such as skin in humans and other animals or seed coats in plants.

Embryo Sac

The female gametophyte within the ovule of a flowering plant, containing the egg cell for fertilization.

Circadian Rhythm

A biological activity that is repeated about every 24 hours.

Photoperiodic Response

The biological reaction of organisms to the length of day or night, affecting behaviors such as flowering in plants and mating in animals.