dilator muscle of pupil

dilator pupillae muscle musculus dilatator pupillae.

Medical dictionary. 2011.

Look at other dictionaries:

  • dilator muscle — ▪ anatomy       any of the muscles (muscle) that widen a body part. In humans, the dilator muscle of the iris contains fibres that extend radially through the iris of the eye (eye, human) and involuntarily contract as available light decreases,… …   Universalium

  • Iris dilator muscle — Iris, front view. (Muscle visible but not labeled.) …   Wikipedia

  • iris dilator muscle — noun A muscle of the eye, serving to dilate the iris. Syn: pupil dilator muscle, pupillary dilator, radial muscle of iris …   Wiktionary

  • Pupil — The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the iris that is the prime mover; the pupil is merely the absence of iris. The pupil determines how much light is let into the eye. Both pupils… …   Medical dictionary

  • dilator — noun 1》 (also dilator muscle) Anatomy a muscle whose contraction dilates an organ or aperture, such as the pupil of the eye. 2》 a surgical instrument for dilating a tube or cavity in the body. 3》 a vasodilatory drug …   English new terms dictionary

  • 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

  • Pupil — The pupil is the hole that is located in the center of the iris of the eye and that controls the amount of light that enters the eye.Cassin, B. and Solomon, S. Dictionary of Eye Terminology . Gainsville, Florida: Triad Publishing Company, 1990.]… …   Wikipedia

  • Dilator — A device used to stretch or enlarge an opening. Patients with scarring of the muscular tube through which food passes from the throat to the stomach (esophagus) can require a dilator procedure in order to open the esophagus for adequate passage… …   Medical dictionary

  • dilator — n. 1) an instrument used to enlarge a body opening or cavity. For example, the male urethra may become narrowed by disease and it can sometimes be restored to its original size by inserting a dilator. Dilators (such as Hegar s dilator) are also… …   The new mediacal dictionary

  • Iris sphincter muscle — Iris, front view. (Muscle visible but not labeled.) …   Wikipedia

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.