The pretracheal lymph nodes are lymph nodes located anterior to the trachea in the neck. Can a paratracheal lymph node be removed? To date, surgeons have only performed this procedure in extended dissections including cervical dissection techniques. In this study, we show that dissection of the contralateral paratracheal lymph nodesRead More →

One is called the urethra. It is hollow and carries urine from the bladder through the penis to the outside. The other two tubes are called the corpora cavernosa. Why do I pee instead of coming male? Urinary incontinence Sexual stimulation can put pressure on your bladder or urethra. WhenRead More →

Granular casts are a sign of many types of kidney diseases. Red blood cell casts mean there is a microscopic amount of bleeding from the kidney. They are seen in many kidney diseases. Renal tubular epithelial cell casts reflect damage to tubule cells in the kidney. What type of castRead More →

Conjugacy classes partition the elements of a group into disjoint subsets, which are the orbits of the group acting on itself by conjugation. Is the conjugate a subgroup? is a normal (also called “self-conjugate” or “invariant”) subgroup. All subgroups of an Abelian group are normal. How do you identify conjugacyRead More →

Gas balloons are typically filled with Helium which, being lighter than air, allows them to rise. Why is helium used in balloons? Helium is an inert gas, which means that it does not react with other substances. It has the lowest boiling point of any element at -269C and aRead More →

A primarily hyperactive/impulsive person may fidget excessively, interrupt others in conversations and activities, blurt out answers out of turn or when not being spoken to, talk excessively, and move excessively in inappropriate situations. Are scatterbrained people intelligent? In study after study, psychologists have found that “scatterbrained” people are actually quiteRead More →

2 Decidual cast formation can be associated with ectopic pregnancy or, less commonly, exogenous progesterone. Decidual casts have been attributed to use of oral contraceptives, injectable progesterone, or an implantable progesterone delivery system (Nexplanon). Should I take a pregnancy test after decidual cast? It should be suspected in a nonpregnantRead More →