This work was supported by the United States Air Force contract AF 29(600)-3021.
Gross structure of the ear, nasal cavity and Paranasal sinuses of the chimpanzee†
Article first published online: 23 FEB 2005
Copyright © 1966 Wiley-Liss, Inc.
The Anatomical Record
Volume 155, Issue 1, pages 77–88, May 1966
How to Cite
House, E. L., Pansky, B., Jacobs, M. S. and Wagner, B. M. (1966), Gross structure of the ear, nasal cavity and Paranasal sinuses of the chimpanzee. Anat. Rec., 155: 77–88. doi: 10.1002/ar.1091550109
- Issue published online: 23 FEB 2005
- Article first published online: 23 FEB 2005
Gross examination of the chimpanzee skull revealed that: there are three ethmoidal sinuses; the sphenoid sinus is immense and is divided into a superior and inferior part; the huge maxillary sinus contains a distinct bony canal for the nasolacrimal duct; the anterior and middle ethmoidal sinuses drain into the superior meatus; the frontal sinus drains via the middle ethmoid; the posterior ethmoid and sphenoid sinuses open into the sphenoethmoidal recess and also communicate with each other; the maxillary sinus opens into the middle meatus through a large ostium; the nasolacrimal duct drains into the inferior meatus; the mastoid process is small but contains a central cavity which communicates with the middle ear; the broad and smooth planum tympanum serves as the floor of the external auditory canal, the latter forming an angle of 30° with the horizontal; the tympanic membrane makes an angle of 30° with the floor of the canal and is deeply recessed antero-inferiorly; except for the extreme slope of the tympanic membrane and the malleus, the middle ear is similar to man; the inner ear is likewise similar; the carotid artery and the large carotid plexus lie in a definite osseous tube surrounded by pneumatized bone but attached to the periotic capsule; the chimpanzee is subject to otitis media.