isthm-, isthmo- +

(Greek: narrow passage or ridge; narrow passage or strip [especially of bodily tissue] connecting two larger entities)

isthmectomy, median strumectomy
1. A surgical procedure in which a narrow bridge of tissue connecting two larger tissue masses is excised; such as, the removal of the thyroid isthmus.
2. Excision of the midportion of the thyroid.
isthmian, isthmic
1. Relating to, or forming an isthmus.
2. Referring to an isthmus.
isthmoid
Resembling an anatomical isthmus.
isthmoparalysis
Paralysis of the velum pendulum palati (soft palate of the roof of the mouth) and the muscles forming the anterior pillars of the fauces (narrow passage from the mouth to the pharynx, situated between the soft palate and the base of the tongue).
isthmoplegia, isthmoparalysis
Facial paralysis or paralysis of the velum pendulum palati (soft palate at the roof of the mouth) and the muscles forming the anterior pillars of the fauces (narrow passage from the mouth to the pharynx, situated between the soft palate and the base of the tongue).
isthmospasm
Isthmian spasm of the fallopian tubes.
isthmus (s), isthmi (pl)
1. A narrow strip of land that joins two larger areas of land.
2. A narrow connection or passage between parts of the body.
3. A narrow strip of tissue joining two larger organs or parts of an organ.
4. A narrow passage connecting two larger cavities.
isthmus glandulae thyroideae, isthmus of thyroid
A narrow portion of the thyroid gland connecting the left and right lobes.
isthmus pharyngonasalls, pharyngeal isthmus
The opening between the nasopharynx and the oral pharynx.
isthmus prostatae, isthmus of prostate
A band of fibromuscular tissue that joins the right to the left lobe of the prostate in front of the urethra.
isthumus cartilaginis auris
A narrow strip of cartilage joining the cartilage of the auricle of the external ear to that of the external acoustic meatus (opening or passageway).
isthumus faucium
1. A constriction connecting the posterior mouth cavity proper with the pharynx.
2. The slightly narrowed opening between the oral cavity and the oral pharynx, bounded superiorly by the free border of the palatal velum and the uvula, oral cavity and the oral pharynx, bounded superiorly by the free border of the palatal velum and the uvula, laterally by the palatoglossal arches, and inferiorly by the dorsum of the tongue.
transisthmian
Across any isthmus; specifically, across the isthmus of the fornicate gyrus (horseshoe-shaped cortical convolution bordering the hilus of the cerebral hemisphere), denoting the gyrus transitivus (prominent rounded elevations that form the cerebral hemispheres).