| seesaw murmur | Murmur heard in both systole and diastole of the heart, as in aortic stenosis and insufficiency. Synonym: seesaw murmur. (05 Mar 2000) |
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| seesaw nystagmus | A nystagmus in which one eye moves upward as the other moves downward, often combined with a torsional rotation (down and out, up and in-as in a see-saw). (05 Mar 2000) |
| Seessel's pocket | The part of the embryonic foregut extending cephalad to the level of the oral plate and caudal to the pituitary diverticulum (Rathke's pouch). Synonym: preoral gut. (05 Mar 2000) |
| Seessel's pouch | See: Seessel's pocket. (05 Mar 2000) |
| Seessel, Albert | <person> U.S. Embryologist, 1850-1910. See: Seessel's pocket, Seessel's pouch. (05 Mar 2000) |