1
BIOS 1300 SI
SI WORKSHEET 9 (Histology)
SI Leader: Merrin Jeffries (email:mj983011@ohio.edu)
February 9, 2015
Histology: the study of tissues
I.) Body Tissues Overview:
1. List and briefly describe the four primary tissue types in the body:
1.
2.
3.
4.
2. List the three primary germ layers our bodies develop from (from innermost to
outermost) and list what each will eventually give rise to:
1.
2.
3.
II.) Epithelial Tissue:
3. List the major identifying characteristics and functions of epithelial tissue:
a. Characteristics:
b. Functions:
2
4. Fill in: Naming Epithelia:
- Classification of epithelium is based on the shape of the cells and the
arrangement of the cells within the tissue. Typically, the arrangement of the cells is stated
first, then the shape, and is followed by “epithelium” to complete the naming (Ex. Simple
Squamous Epithelium).
Arrangements: fill in the blank with the correct term:
1. ______________________: Cells are found in a single layer attached to the basement membrane
2. ______________________: Cells are found in 2 or more layers stacked atop each other
3. ______________________: A single layer of cells that appears to be multiple layers due to
variance in height and location of the nuclei in the cells.
4. ______________________: Cells are rounded and can slide across one another to allow
stretching
Shapes:
1. _______________________: Flat, thin, scale-like cells
2. _______________________: Cells that have a basic cube shape. Typically the cell's height and
width are about equal.
3. ________________________: Tall, rectangular or column- shaped cells. Typically, they appear
taller than they are wide.
5. Fill in the following table: Epithelial Tissue Identification:
Name of
Epithelial
Tissue
Simple
Squamous
Epithelium
Picture
Major
Characteristics and
Functions
Location
3
Simple Cuboidal
Epithelium
Simple
Columnar
Epithelium
Pseudostratified
Columnar
Epithelium
Stratified
Squamous
Epithelium
(Keratinized vs.
Nonkeratinized)
4
Stratified
Cuboidal
Epithelium
Stratified
Columnar
Epithelium
Transitional
Epithelium
**Tuesday’s and Thursday’s SI sessions this week will cover the remaining 3 tissue types in
the body:
III.) Connective Tissue
IV.) Nervous Tissue
V.) Muscular Tissue
Helpful Histology Resources:
http://www.highlands.edu/academics/divisions/scipe/biology/labs/rome/histology.pdf