| notch of apex of heart | A slight notch near the apex of the heart where the anterior interventricular sulcus reaches the diaphragmatic surface of the heart. Synonym: incisura apicis cordis. (05 Mar 2000) |
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| notch of tentorium | The triangular opening in the tentorium cerebelli through which the brainstem extends from the posterior into the middle cranial fossa. Synonym: incisura tentorii, notch of tentorium. (05 Mar 2000) |
| superior thyroid notch | A deep notch in the middle of the upper border of the thyroid cartilage. Synonym: incisura thyroidea superior. (05 Mar 2000) |
| supraorbital notch | A groove in the orbital margin of the frontal bone, about the junction of the medial and intermediate thirds, through which pass the supraorbital nerve and artery. See: supraorbital foramen. Synonym: incisura supraorbitalis. (05 Mar 2000) |
| suprascapular notch | A notch on the superior border of the scapula through which the suprascapular nerve passes. Synonym: incisura scapulae, suprascapular notch. (05 Mar 2000) |
| suprasternal notch | The V shaped notch at the top of the breastbone (sternum). (12 Dec 1998) |
| dicrotic notch | The acute drop in arterial pressure pulse curves following the systolic peak, corresponding to the incisura of the displacement pulse curve. (05 Mar 2000) |
| digastric notch | The groove medial to the mastoid process of the temporal bone from which the digastric muscle originates. Synonym: incisura mastoidea, digastric groove, digastric notch, mastoid notch. (05 Mar 2000) |
| iliosciatic notch | The deep indentation in the posterior border of the hip bone at the point of union of the ilium and ischium. Synonym: incisura ischiadica major, iliosciatic notch, sacrosciatic notch. (05 Mar 2000) |
| inferior thyroid notch | A shallow notch in the middle of the lower border of the thyroid cartilage. Synonym: incisura thyroidea inferior. (05 Mar 2000) |
| interarytenoid notch | The indentation of posterior portion of the aditus laryngis between the two arytenoid cartilages. Synonym: incisura interarytenoidea. (05 Mar 2000) |
| interclavicular notch | The V shaped notch at the top of the breastbone (sternum). (12 Dec 1998) |
| intercondyloid notch | The deep fossa between the femoral condyles in which the cruciate ligaments are attached. Synonym: fossa intercondylaris, intercondyloid fossa, intercondylic fossa, intercondyloid notch, popliteal notch. (05 Mar 2000) |
| intertragic notch | The deep notch in the lower part of the auricle between the tragus and antitragus. Synonym: incisura intertragica, incisura tragica. (05 Mar 2000) |
| intervertebral notch | One of the two concavities above (superior) and below (inferior) the pedicle of a vertebra; the notches of two adjacent vertebrae (plus the intervertebral disc) form an intervertebral foramen. Synonym: incisura vertebralis, intervertebral notch. (05 Mar 2000) |