33:630:363 Lecture Notes - Lecture 1: Organism, Unified Atomic Mass Unit, Homeostasis
24 Apr 2020
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Document Summary
Physiology: the study of how the nervous, endocrine, muscular, skeletal, circulatory, respiratory, immune, urinary, digestive, and reproduction systems function. Anatomy: the study of how these physiological systems are constructed to complex: atom: smallest unit of an element composed of electrons, protons, and. Bacteria = single cell ; human = multicellular. Life is composed of matter-anything that takes up space and has mass. Element-cannot be broken down by ordinary chemical means, basic building blocks of matter. Each element consists of one kind of atom. Atom: smallest unit of an element that still has the element"s physical and chemical properties; retain elements physical and chemical properties; form molecules. Physicists have split atoms into hundreds of subatomic particles we only need to worry about three: + charge of proton and charge of electron are equal in magnitude. Structure of an atom: one atomic mass unit one atomic mass unit almost no mass. When atom is neutral the # of protons = # electrons.
