Lab 8 Endocrinology Flashcards
List the 3 possible interactions btw Gamma radiation and matter?
Photoelectric effect, Compton Scattering and Pair production
What is Compton Scattering?
y- photons colliding with free or loosely bound electron in the absorber
Which radiation type has the highest ionzing ability?
Alpa
Where is progesterone produced?
Ovary, placenta and small amounts in adrenal medulla
What is detected in pregnancy in humans?
Present of hCG secretion by trophoblast cells in placenta
What is pair production?
When a photon of high energy comes near to an atomic nucleus in the absorber
Give the step of ELISA
Enzyme linked to antigen or antibody, after immunological reaction and separation of a chromogenic substrate of the given enzyme is added. If complex exist, colour reaction.
What is the shortest effective distance?
Alpha
What is the strongest pervasiveness radiation?
Gamma
Which ions inhibit iodine accumulation?
Thiocyanate ions
Particels in Beta-radiation?
Electron and positron
Which radiation has longest effective distance?
Gamma
Which radiation has strongest effective pervasiveness?
Gamma
Name the isotopes of hydrogen
Protium, Deuterium and Tritium
What is the background count?
Cosmic radiation and internal electronic noise of the apparatus
How to detect progesterone in blood?
ELISA and RIA
Which animals can Estrone sulphate be detected in the blood by ELISA or RIA?
Horse and Swine
Most common Hydrogen isotope
Protium
What does Alpha particles consist of?
2 protons and 2 neurons = Helium nucleus
What does gamma particles consist of?
Quantum of electromagnetic radiation of high energy
Define Becquerel
Number of disintegrations per second
The steps of RIA
To separate the unbound components and then measure the radioactivity of the bound fraction
Definition of Isotopes
Elements with the same proton numbers but different neutron numbers
Which radiation has weakest effective pervasivness?
Alpha