The external ear consists of the auricle which collects sound, the external acoustic meatus, and the tympanic membrane. Elastic cartilage provides the framework for the auricle and is difficult to repair because of the lack of a direct blood supply to the chondrocytes. The extensive sensory nerve...
Anatomy The common carotid artery bifurcates in the neck to form the external and internal carotid arteries. The internal carotid artery has no branches before entering the skull through the foramen lacerum. Flow through theexternal carotid arteryassumes importance for the brain only if the internal...
The Ear Robert LewisMaynard,NoelDownes, inAnatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research, 2019 The External Ear Theexternal earof the rat is leaf-shaped with a folded margin, supported by elastic cartilage and covered by thin skin bearing fine hairs. Ears are...
Ear Lobe The lowest part of the auricle where there is no cartilage Concha The hollow formed by the antitragus, between the anterior part of the helix and the inferior antihelix crus Cymba Concha The concha superior to the helix crus Cavum Concha The concha inferior to the helix crus Orifice...
The epidermis on the concave aspect lies on a very thin subcutis which is strongly attached to the auricular cartilage. In contrast the convex aspect of the outer ear has a thicker subcutis with a stronger layer of subcutaneous fat which causes a certain laxity and displaceability compared to...
In anatomy, situated toward or near the outside. See also lateral. Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved. ex·ter·nal (eks-ter'năl), [TA] Do not ...
Information is scarce on gray whale ( Eschrichtius robustus ) anatomy and that of mysticetes in general. Dissection of the head of a neonatal gray whale revealed novel anatomical details of the eye, blowhole, incisive papilla with associated nasopalatine ducts, sensory hairs, and throat grooves...
The external anatomy of the fish contains body features and several types of fins. Additionally, fish have nostrils and eyes on the face that mediate the senses of smell and sight. Fish also have an inner ear structure that mediates the sense of hearing. Body Features of Fish The operculum...
External ear hole closure in LG/J mice represents a model of regenerative response. It is accompanied by the formation of a blastema-like structure and the re-growth of multiple tissues, including cartilage. The ability to regenerate tissue is heritable. An F34 advanced intercross line of mice...
15.1Anatomy review 15.1.1Origin Theexternal carotid artery(Fig. 15.1) begins at the bifurcation from the common carotid, lateral to the upper border of the thyroid cartilage, between C3 and C4. The external carotid is situated anteromedial of the internal carotid. ...