| RBD | recurrent brief depression; relative biological dose; right border of dullness |
|---|---|
| RLSB | right lower scapular border |
| RSB | reticulocyte standard buffer; right sternal border |
| RUSB | right upper sternal border |
| SB | Bachelor of Science; Schwartz-Bartter [syndrome]; serum bilirubin; shortness of breath; sick bay; si... |
| right border of heart | The border between the sternocostal and diaphragmatic surfaces of the heart; it is fairly well defined in fixed hearts but is rounded and indefinite in the living heart. Synonym: margo dexter cordis, right margin of heart. (05 Mar 2000) |
|---|---|
| ciliary border of iris | The peripheral border of the iris attached to the ciliary body. Synonym: margo ciliaris iridis, ciliary margin of iris. (05 Mar 2000) |
| posterior border of eyelids | The posterior edge of the free margin of each eyelid, which is also the border of the conjunctiva. (05 Mar 2000) |
| posterior border of fibula | The ridge on the posterior aspect of the fibula extending from the head to the medial aspect of the peroneal groove. Synonym: margo posterior fibulae. (05 Mar 2000) |
| posterior border of petrous part of temporal bone | The margin of the petrous part of the temporal bone that extends from the apex to the jugular notch; it articulates with the basal and jugular portions of the occipital bone. Synonym: margo posterior partis petrosae ossis temporalis. (05 Mar 2000) |
| posterior border of radius | The ridge on the radius that extends from the tuberosity to the tubercle on the posterior aspect of the distal extremity. Synonym: margo posterior radii. (05 Mar 2000) |
| posterior border of testis | The rounded posterior portion of the testis into which the vessels enter. Synonym: margo posterior testis. (05 Mar 2000) |
| posterior border of ulna | The sinuous palpable subcutaneous ridge on the posterior aspect of the ulna that extends from near the olecranon to the styloid process, demarcating "anterior" (flexor) from "posterior" (extensor) compartments of forearm. Synonym: margo posterior ulnae. (05 Mar 2000) |
| sagittal border of parietal bone | The medial border of the parietal bone entering into the sagittal suture. Synonym: margo sagittalis ossis parietalis. (05 Mar 2000) |
| proximal border of nail | The proximal border of the nail entirely covered by the nail wall. Synonym: margo occultus unguis, occult border of nail. (05 Mar 2000) |
| pupillary border of iris | The inner border of the iris that forms the edge of the pupil. Synonym: margo pupillaris iridis, pupillary margin of iris. (05 Mar 2000) |
| sphenoidal border of temporal bone | The part of the border of the squamous part of the temporal bone that articulates with the greater wing of the sphenoid. Synonym: margo sphenoidalis ossis temporalis. (05 Mar 2000) |
| squamous border | Edge of a bone which articulates with the squamous part of the temporal bone. See: squamous border of parietal bone, squamous border of sphenoid bone. Synonym: margo squamosus, squamous margin. (05 Mar 2000) |
| squamous border of parietal bone | The lateral border of the parietal bone that articulates with the squamous part of the temporal bone. Synonym: margo squamosus ossis parietalis. (05 Mar 2000) |
| squamous border of sphenoid bone | The margin of the greater wing of the sphenoid bone that articulates with the squamous part of the temporal bone. Synonym: margo squamosus ossis sphenoidalis. (05 Mar 2000) |