isthmus of external auditory meatus

a narrowing in the osseous part of the meatus about 2 cm from the internal end of the concha.

Medical dictionary. 2011.

Look at other dictionaries:

  • isthmus — 1. A constriction in the embryonic neural tube delineating the anterior portion of the rhombencephalon, the future metencephalon, form the more rostrally located mesenephalon. 2. SYN: rhombencephalic i.. [G. isthmos] i. of aorta SYN …   Medical dictionary

  • List of anatomical topics — This page aims to list articles related to anatomy. This list is not necessarily complete or up to date if you see an article that should be here but isn t (or one that shouldn t be here but is), please update the page accordingly. NOTOC A… …   Wikipedia

  • notch — 1. An indentation at the edge of any structure. 2. Any short, narrow, V shaped deviation, whether positive or negative, in a linear tracing. SYN: incisura [TA], emargination, incisure …   Medical dictionary

  • nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium

  • canal — A duct or channel; a tubular structure. SEE ALSO: c., duct. SYN: canalis [TA]. [L. canalis] abdominal c. SYN: inguinal c.. accessory c. a channel leading from the root …   Medical dictionary

  • branch — An offshoot; in anatomy, one of the primary divisions of a nerve or blood vessel. A b.. See ramus, artery, nerve, vein. SYN: ramus (1) [TA]. accessory meningeal b. SYN: pterygomeningeal artery …   Medical dictionary

  • gland — An organized aggregation of cells functioning as a secretory or excretory organ. SYN: glandula (1) [TA]. [L. glans, acorn] accessory g. a small mass of glandular structure, detached from but lying near another and larger g., to which it is… …   Medical dictionary

  • cavity — 1. A hollow space; hole. See cave, c., cavitas, cavernous space. 2. Lay term for the loss of tooth structure due to dental caries. SYN: cavum [TA], cavitas. [L. cavus …   Medical dictionary

  • Human pharynx — pharynx Head and neck. Pharynx …   Wikipedia

  • Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.