The primary function of a stirring rod is to stir solutions by hand. Stirring rods have other uses in the laboratory, however, including helping to decant liquid from containers, breaking up emulsions and inducing crystallization.Know More
Stirring rods are used to decant or pour liquids slowly. Slow pouring is essential when working with potentially hazardous chemicals that can react too quickly. Using the stir rod to decant liquid makes it easier to keep a precipitate in the bottom of the beaker, because the liquid pours more slowly, reducing the chances of it agitating the solid.
To induce crystallization in a recrystallization experiment, the glass stirring rod is scraped against the inside of the flask containing the solution.Learn more about Chemistry
The primary function of the human pupil is to regulate the amount of light that enters the eye. When the pupil is smaller, less light enters the eye in bright environments. The pupil gets larger as light levels decrease to let more light into the eye. Doctors examine the pupil to ascertain one's neurological function.Full Answer >
As part of the immune system, a primary function of lymphocytes is to respond immediately to the presence of foreign matter, viral attacks and invading pathogens. Lymphocytes, which are a type of white blood cell, are found in the blood and certain lymphoid organs.Full Answer >
The primary function of DNA is to send the instructions needed for the development, survival and reproduction of living organisms. DNA contains information required to create proteins, and proteins are used to complete specific functions. Proteins are complex molecules that serve different functions and provide physical characteristics to organisms. To accomplish different functions, DNA sequences are transformed into messages that are used to produce proteins.Full Answer >
According to About.com, the primary function of the myocardium is to stimulate heart contractions and relaxation. Contractions of the heart allow pumping of blood from the ventricles, and relaxation makes it possible for the atria to receive blood. Without the myocardium, the heart would not beat, and the cells and tissues of the body would not receive blood.Full Answer >