BIMS 2105 Lecture Notes - Lecture 3: Umbilical Cord, Golgi Apparatus, Epithelium
Document Summary
The human body is made up of atoms, molecules, organelles, cells, tissues, organs, and systems. All of these parts function together in a unified & complex process called homeostasis. Homeostasis is a state of equilibrium that is maintained within the body"s internal environment. Homeostasis creates an environment that permits cells to function optimally under changing conditions. H20 (water) contains 2 like and 1 different atom. * the smallest, most basic chemical unit of an element. * atoms consist of a nucleus that contains two things: * the nucleus is surrounded by negatively charged particles called electrons. * chemical elements are made up of atoms. * an element is a substance that cannot be broken down by chemical means into any other substance. * there are 118 elements that have been identified. * the 6 main elements of the human body are oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
