Biology:List of anatomical isthmi
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In anatomy, isthmus refers to a constriction between organs. This is a list of anatomical isthmi:
- Aortic isthmus, section of the aortic arch
- Cavo-tricuspid isthmus of the right atrium of the heart, a body of fibrous tissue in the lower atrium between the inferior vena cava, and the tricuspid valve
- Isthmus, the ear side of the eustachian tube
- Isthmus, narrowed part between the trunk and the splenium of the corpus callosum
- Isthmus, formation of the shell membrane in birds oviduct's
- Isthmus lobe, lobe in the prostate
- Isthmus of cingulate gyrus
- Isthmus of fauces, opening at the back of the mouth into the throat
- Isthmus organizer, secondary organizer region at the junction of the midbrain and metencephalon
- Isthmus tubae uterinae, links the fallopian tube to the uterus
- Kronig isthmus, band of resonance representing the apex of lung
- Thyroid isthmus, thin band of tissue connecting some of the lobes that make up the thyroid
- Uterine isthmus, inferior-posterior part of uterus
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