POL PLEASE
Where are the focus controls on a microscope located?
Arm
What is the name for the eyepiece of the optical microscope through which an image is viewed?
Ocular
What is characteristic of resident normal flora?
They are normally found on the skin and within the human body.
Parasitic infections can be controlled by which WBC's?
Eosinophils
The percentage of red blood cells found in a sample of blood is called the ____.
What routine tests are most often performed at the physician's office laboratory.
Chemistry and Hematology
Which part of an optical microscope contains a magnifying lens?
Objective
An example of a subcellular microorganism is a ___.
virus
Mononucleosis is caused by what virus?
Epstein-Barr virus
Plasma makes up what percentage of the blood?
Which laboratory test uses samples of whole blood to identify problems with the count, size, or shape of blood cells that could indicate disease?
Hematologic test
The optical microscopes used in the pol usually have ___ objectives.
Three
What is an example of a microorganism that is classified a prokaryotic cell?
Bacterium
Three-year old Tyler's parents report that he has had a runny nose and a mild cough for the last several days. They brought him to the clinic because the coughing was becoming "terrible" during the last 24 hours. While getting the history from the parents, you notice a "whoop" sound as Tyler inhales after a severe coughing spell. What id the disease most probable for the cause of the cough?
Pertussis
The production of RBCs in the blood is controlled by which hormone?
Which laboratory tests examine blood, urine, sputum, reproductive fluids, and fluids from wounds to identify the presence of pathogenic organisms?
Microbiologic tests
What is designed to be lowered into a drop of immersion oil placed directly above the prepared specimen under examination?
Oil-immersion objective
What is a characteristic of a subcellular microorganism?
Noncellular structure in which the nucleic acid is surrounded by a protein coat.
Amy is a 9-year old patient who has a high fever, headache, and an itchy rash. Although Amy usually has a good appetite, her mother says that she has not been hungry for the last few days. the rash is starting to blister. What disease might you expect?
Chicken Pox
Red blood cells live for approximately ____.
What is the function of the focus controls?
They bring the objects being examined into clear view.
What is a characteristic of an oil-immersion objective?
It is used for specimens that need very high magnification.
What is a frequent cause of bacterial infections, including epiglottitis and pneumonia, in infants and young children in the United States?
Haemophilius influenza Serotype B
Bacteria and viruses are destroyed by white blood cells called__.
neutrophils
Which of these WBCs release histamine and heparin and promote inflammation?