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BIOL 203: Human Anatomy and Physiology Midterm Review 10-15-2015 LAB MIDTERM Tuesday, October 20th, 2015 at 8:00-9:30PM in Elliott Hall of Music BRING YOUR PURDUE ID!!!!!! EVENING EXAM TAKES THE PLACE OF YOUR REGULARLY SCHEDULED LAB FOR THE WEEK OF OCT. 12! For Next Recitation (10/16 and 10/19)  Read Lab 8  Quiz covering Lab 8 1 THE HUMAN BODY – LEVELS OF ORGANIZATION 1. MOLECULES (e.g. water, two atoms of hydrogen linked to one atom of oxygen) and macromolecules ( = "large molecules", e.g. DNA) 2. CELLS (e.g. white blood cells, muscle cells, nerve cells), which contain cell organelles (e.g. mitochondria, little powerhouses that produce energy for the cells) 3. TISSUES, made up of cells (e.g. muscle…show more content…
 In the adult, many of these differentiated cells cease to divide  Others continue to divide (e.g. cells in the stratum basale of the epidermis) 5 LIFE CYCLE OF CELLS  Cells that divide go through a series of phases: M-Phase when they are actually dividing, and interphase when they are not  Cell division comes under a complex set of controls that are upset in cancer, which is uncontrolled cell division, often starting off with one cell with mutated DNA for a gene that regulates cell division Phases of Mitosis  Prophase  Metaphase  Anaphase  Telophase 6 CHARACTERISTICS OF EPITHELIUM 1. STRUCTURALLY POLARIZED • • One end of cell/tissue is a free surface Opposite end of cell/tissue is anchored to underlying tissue (usually connective tissue) by the basement membrane 2. NON-VASCULAR • No direct blood supply 3. EPITHELIAL CELLS ARE TIGHTLY PACKED TOGETHER • Very little intercellular space between cells TYPES OF EPITHELIUM SHAPE 1. Squamous 2.

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