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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
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 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.