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Unformatted text preview: Epithelial Tissue Histology
Model #1: Structure of Epithelial Tissue
Cuboidal Columnar Other Simple Squamous Simple Cuboidal Simple Columnar Pseudostratified Columnar Stratified Squamous Stratified Cuboidal Stratified Columnar Transitional Stratified LAYERS Simple Squamous QUESTIONS:
1. Describe the morphology (shape) of the following epithelial tissue cells.
Cubed with nucleus in the middle b) Columnar:
Squared cells on the basal layer, column like cells on the apical layer c) Squamous:
Long rectangular cell shape on bottom, multiple squares 1 2. Write a grammatically correct sentence to describe the difference between simple
and stratified epithelial tissue:
Simple epithelial tissue is single layer with a basic shape while stratified has multiple layers 3. Reviewing your answers to questions #1 and #2, what two characteristics do you
think are used to classify epithelial tissue?
Multiple layers with squared like cells 4. Based on your examination of Model 1, which epithelial tissues do not conform to the
naming classification rules you described in question #3? (The manager should have
two different team members state a tissue and describe its structure).
The pseudo stratified is bulb's and has what looks like cillia at the end of the cells 5. Compare pseudostratified columnar epithelium and simple columnar epithelium and
answer the following questions:
a) How are these two tissues the same?
They are column like cells b) What differentiates pseudostratified columnar epithelium from simple columnar?
Pseudostratified columnar has long bulbis columns and no squared cells
Simple Columnar is just columns of cells 6. The bottom (basal) layer of stratified epithelial tissue may have different cell shapes
from the top (apical) layer. Which layer determines the shape classification of the
tissue? Provide evidence to support your answer.
Basal- squared cells Apical- rectangular cells 7. Name the specific type of epithelial described by the following: a tissue that consists
of multiple layers of cells, in which the top layer is composed of columnar cells.
Stratified columnar cell 2 8. Before answering as a group, each person should individually complete this question
by themselves. Once everyone is done, complete Question #9 as a group.
a. Label the apical surface on each epithelial tissue photomicrograph.
b. Label the basal surface on each epithelial tissue photomicrograph.
c. Draw a bracket to indicate the location of the epithelial tissue.
d. Name the specific epithelial type under both Tissue a and Tissue b. apical basal a. b.
Images courtesy of The University of Kansas Stratified columnar Tissue = ____________________________ simple squamous cell
Tissue = ____________________________ 9. Discuss and compare your individual answers to the above question with your group.
(The manager should ensure that all group members share their answers). Develop
a group consensus and write the best answer below: 10. The majority of dust is composed of human skin cells. What does this indicate about
the rate of mitosis for epithelial tissue?
Our skin cells have to replicate at a very fast rate 11. Epithelial cancers are the most common types of cancer. Answer the following
questions together as a group:
a) Briefly explain what cancer is.
Cancer is uncontrolled growth stuck in the G2 phase b) What do you think makes skin so susceptible to uncontrolled cellular growth?
Skin cells have to rapidly replicate 3 4 ...
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- Fall '16
- Mrs. Adams