What structure keeps a contact lens on the cornea? Does the ciliary body hold the lens in position? The muscles in the eye attached to the lens serve what purpose? Where are the two lenses located in a compound
What function is performed by the diaphragm of a microscope? What is the function of vacuoles in an amoeba? What is the function of cytoplasm in an amoeba? What structures in the cell membrane function as ion channels? What is one function of the smooth endoplasmic reticulum?
This is a number, expressed in f-stops, that describes how wide the lens’ diaphragm opens to let light into the camera. Each f-stop doubles the amount of light that goes into the camera. Perhaps confusingly, a large number, like f-32, means a small opening, and a small number means...
coli into the urethra.Other factors, like menopause, lowered estrogen levels and elevated vaginal pH can also increase the risk of a UTI. Women are also more likely to get an infection after sexual activity or when using a diaphragm and spermicide for birth control....
What happens when the diaphragm relaxes?The Diaphragm:The diaphragm is a dome-shaped muscle located directly under the lungs, and it is the primary muscle of the respiratory system. When the diaphragm contracts, it flattens, which increases the volume of the thoracic/chest cavity. This increased...
How does the cochlea work? Describe the functions of the eyes and ears. What function do the cartilage rings on the trachea perform? Besides hearing, what is the other function of the ear to human beings? What is the function of the tympanic membranes, and which human structures are they ...
The ability of a microscope objective to gather light and resolve fine specimen detail at a particular object distance is measured by its numerical aperture (NA). It represents the range of angles at which light can enter the lens. The refractive index of the medium separating the objective ...
How does the size of the iris diaphragm opening affect resolution? Would this be affected by the magnification used to observe the sample? Which objective lens will give you the greatest resolving power? Why it is important to not use the...
What does the iris diaphragm on a microscope do? Who was the scientist who first observed cells in cork through a microscope? Most bacterial cells are measured using what metric system of length? A. Millimeters (mm) B. Micrometers (um) C. Nanometers (nm) D. ...
A Pap smear is a test performed on women to check for cancer at the opening of the uterus. Cells from this location are scraped off and sent to a laboratory for examination under a microscope. These cells are checked to see if any of them are abnormal or precancerous....