Animation Pretest
Development of Pharyngeal Pouches

Please answer all questions in this pretest and click Submit when finished. This pretest is for your own learning; your answers will be displayed on the next page, but will not be saved.

1. Which statement is FALSE about pharyngeal pouches?

a. They are internal structures lined with endoderm
b. There are 6 pharyngeal pouches
c. The pharyngeal cleft and pharyngeal pouch are separated by a pharyngeal membrane
d. They are located in the wall of the future throat
e. Don't know

2. Which structure is NOT formed from the 1st pharyngeal pouch?

a. Auditory tube
b. External auditory canal
c. Tympanic cavity
d. Tubotympanic recess
e. Don't know

3. Ectopic thymic tissue can occur if the __________ pouches fail to migrate properly.

a. 3rd ventral
b. 3rd dorsal
c. 4th ventral
d. 4th dorsal
e. Don't know

4. The superior parathyroid glands are formed from the ________ pouches:

a. 1st
b. 2nd
c. 3rd
d. 4th
e. Don't know

5. The ________ portion of the ___ pharyngeal pouches form cells that secrete calcitonin.

a. Ventral, 3rd
b. Dorsal, 3rd
c. Ventral, 4th
d. Dorsal, 4th
e. Don't know

Last updated 10 November 2003

For more information, contact:
Valerie Dean O'Loughlin, Ph.D.
Assistant Professor of Anatomy and
Director of Undergraduate Human Anatomy
Jordan Hall 010A
Medical Sciences
Indiana University
Bloomington, IN 47405
(812) 855-7723 (voice)
(812) 855-4436 (fax)
vdean@indiana.edu