Angina pectoris, commonly known as angina, is the sensation of chest pain, pressure, or squeezing, often due to ischemia of the heart muscle from obstruction or spasm of the coronary arteries.
Pure Culture. A pure culture is a population of cells or multicellular organisms growing in the absence of other species or types.
Lesson Summary. In summary, culture can be defined as the language, norms, values, beliefs, and more that, together, form a people's way of life. It is an essential part of being human. Although there are many elements. and aspects of culture, they can all be categorized as either material or nonmaterial. culture.