What causes Erlenmeyer flask deformity?
This deformity results from defective bone modeling (under-modeling) at the meta-diaphyseal [di-metaphyseal] region leading to straight uncurved [or even laterally bowed] di-metaphyseal borders and cortical thinning giving the appearance of EFD [Castriota-Scanderbeg and Dallapiccola, 2005].
What does a Erlenmeyer flask do in chemistry?
The Erlenmeyer flask is named for Emil Erlenmeyer (1825–1909), a German organic chemist who designed the flask in 1861. The flask is often used for stirring or heating solutions and is purposefully designed to be useful for those tasks.
What is a Erlenmeyer flask used to measure?
1) Erlenmeyer Flask- used for holding and transferring liquids. Not for accurate measuring. Must capitalize Erlenmeyer since it is named after a person.
Is Erlenmeyer flask used for filtration?
Filter Degasser standard solvent bottles or Erlenmeyer flasks Simple and economical to use HPLC solvent filtration and degassing is a simple approach to solvent purification. Can be used in most isocratic applications.
What is Pyle disease?
Pyle disease is a disorder of the bones. Its hallmark feature is an abnormality of the long bones in the arms and legs in which the ends (metaphyses) of the bones are abnormally broad; the shape of the bones resembles a boat oar or paddle.
What is metaphyseal flaring?
Erlenmeyer flask deformity (EFD), also known as metaphyseal flaring, refers to a radiographic appearance typically on a femoral radiograph demonstrating relatively reduced constriction of the diaphysis and flaring of the metaphysis as a result of undertubulation.
Why do we use Erlenmeyer flask for titration?
The Erlenmeyer flask offers a slight advantage in accuracy due to its tapered sides. The size of the beaker or flask should be chosen to allow for more liquid to be added during the titration process.
Does a Erlenmeyer flask measure volume?
Beakers and Erlenmeyer flasks should not be used to measure volume unless you need only a very crude estimate because their accuracy for volume measurements is so poor. They can hold a much larger volume than any of the other types of glassware, however, which makes them useful for mixing solutions.
Why is an Erlenmeyer flask used for titrations?
The unique shape of the Erlenmeyer flask, with it’s angled sides, and slim neck allow liquids to be mixed by swirling without risk of spiling the contents. This ability makes them suitable for titrations by positioning it below a burette. Erlenmeyer flasks can also be used to perform boiling reactions.
What are characteristics of an Erlenmeyer flask?
Erlenmeyer flasks are recognizable from their basic characteristics: flat bottom, conical body, and long, cylindrical neck. They are named for German chemist Emil Erlenmeyer.
What causes Craniometaphyseal dysplasia?
Mutations in the ANKH gene cause autosomal dominant craniometaphyseal dysplasia. The ANKH gene provides instructions for making a protein that plays a role in the development and function of cells that build bones (osteoblasts) and cells that break down bone (osteoclasts).
What does metaphysis mean?
Medical Definition of metaphysis : the transitional zone at which the diaphysis and epiphysis of a bone come together.