HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

Help viewing high resolution images Return to article Hotlight (NEW!) What's Hotlight?

The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.

You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)

Fig. 12B. —Drawings reveal development of external, middle, and inner ear. Gray area = cartilage condensations of neural crest origin, areas with horizontal lines = ectoderm, areas with diagonal lines = endoderm. Medial-developing external auditory canal becomes filled with meatal plug (MP) consisting of proliferating ectodermal cells that subsequently recanalize. Tubotympanic recess (TR) has deepened to form tympanic cavity (TC). Otic vesicle forms endolymphatic duct and sac (ES), early semicircular canals (SC), and cochlear diverticulum (CD). Membranous labyrinth induces surrounding mesenchyme to condense and ultimately form bony labyrinth. S = stapes, I = incus, M = malleus.

Return to article Hotlight (NEW!) What's Hotlight?