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external acoustic meatus |
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external acoustic meatus, the canal of the external ear, composed of bone and cartilage, extending from the auricle to the tympanic membrane. Also called external auditory canal. meatus pl. meatus [L.] an opening or passage. acoustic meatus, meatus acusticus, meatus auditorius, auditory meatus a passage in the ear; see external acoustic meatus and internal acoustic meatus (below). ethmoidal meatus the spaces between the ethmoturbinal bones. external acoustic meatus the passageway within the ear between the ear flap and the eardrum. internal acoustic meatus the passageway on the medial surface of the petrous temporal bone; transmits the facial and vestibulocochlear nerves. meatus nasi, meatus of nose one of the three main airways of the nasal cavity which are found on either side of the septum; they are the dorsal, middle and ventral meati. nasopharyngeal meatus the common space shared by the right and left nasal cavities just before they enter the nasopharynx. meatus urinarius, urinary meatus the opening of the urethra on the body surface through which urine is discharged. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Either of two passages of the ear, the internal or the external acoustic meatus. a clinical thermometer inserted into the external acoustic meatus to determine the body temperature by measuring the infrared radiation emanating from the tympanic membrane. a clinical thermometer inserted into the external acoustic meatus to determine the body temperature by measuring the infrared radiation emanating from the tympanic membrane. |
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