Epithelial Tissues Lab

Epithelial Tissues Lab

CATEGORY / 4 / 3 / 2 / 1
Completion/Neatness
______/4 / All required elements are complete and very detailed. Report is extremely neat and easy to read. / All required elements are complete. Report is neat. / Elements are somewhat complete but not detailed. Report is somewhat neat. / Several required elements are missing. Report is messy.
Drawings/Diagrams
______/4 / Clear, accurate diagrams are included. Diagrams are labeled neatly and accurately, following all guidelines for lab drawings. / Diagrams are included and are labeled neatly and somewhat accurately, following most guidelines for lab drawings. / Diagrams are included but may be unclear or inaccurate. Diagrams follow few guidelines for lab drawings. / Diagrams are inaccurate OR do not follow guidelines for lab drawings.
Understanding of Scientific Concepts
(worth double points)
______/8 / Report illustrates an accurate and thorough understanding of scientific concepts underlying the lab. Questions are answered thoroughly and with details or examples from the lab. Utilizes scientific vocabulary correctly. / Report illustrates an accurate understanding of most scientific concepts underlying the lab. Questions are answered with some details or examples from the lab. Utilizes some academic vocabulary. / Report illustrates a limited understanding of scientific concepts underlying the lab. Questions are answered with few details or examples from the lab. Academic vocabulary is not used or sometimes used incorrectly. / Report illustrates inaccurate understanding of scientific concepts underlying the lab OR shows little effort and reflection. Academic vocabulary is incorrectly or not used.
Writing Mechanics
______/4 / One or fewer errors in spelling, punctuation and grammar in the report. All answers are in complete and thoughtful sentences. Completely avoids the use of generic pronouns. / Two or three errors in spelling, punctuation and grammar in the report. Most answers are in complete sentences. Some use of generic pronouns. / Four errors in spelling, punctuation and grammar in the report. A few answers are in complete sentences. Generic pronouns are frequently used. / More than 4 errors in spelling, punctuation and grammar in the report. Incomplete sentences. Utilizes too many generic pronouns and or contains text-type abbreviations.
TOTAL SCORE
______/20
CONCLUSION SCORE
(conclusion rubric)
______/15

Histology Lab

Purpose: To review the characteristics of epithelial, connective, muscle and nervous tissues and to observe examples.

Objectives:

  1. Describe the characteristics and types of epithelial, connective, muscle and nervous tissues
  2. Indicate a location and function of each type of tissue
  3. Identify examples of epithelial, connective, muscle and nervous tissues

Materials:

Textbook or notes

Microscope

Prepared slides of tissues

Colored pencils

Procedure:

  1. Use the microscope to observe the prepared slides of the different types of tissues.
  2. Look for its special distinguishing features: such as cell size, shape and arrangement.
  3. Compare the prepared slides to the pictures in the text and/or your notes.
  1. Sketch a FEW of the cells of each type of tissue in part B of the lab report. For each sketch, indicate magnification, and include a location example and the function of the tissue.
  1. LABEL THE MAJOR CHARACTERISTICS OR STRUCTURES THAT YOU USED TO IDENTIFY THIS TISSUE.
  1. Use colored pencils to differentiate various cellular structures in your sketches. Select a different color for each of the structures on the color key and color those structures as seen in each of your sketches.
  1. Test your ability to recognize each type of tissue. To do this, have your lab partner select one of the slides, cover its label and focus the microscope on the tissue. See if you can correctly identify the tissue.

Histology Lab Data

Epithelial Tissues

Simple Squamous Epithelium
Magnification ______X
Location: ______
Function: ______/ Simple Cuboidal Epithelium
Magnification ______X
Location: ______
Function: ______
Simple Columnar Epithelium
Magnification ______X
Location: ______
Function: ______/ Stratified Squamous Epithelium
Magnification ______X
Location: ______
Function: ______
Pseudostratified Columnar Epithelium
Magnification ______X
Location: ______
Function: ______/ Color Key:
Nucleus
Cytoplasm
Cell Membrane
Basement Membrane
Lumen
Goblet Cell
Cilia

Histology Lab Data

Connective Tissues

Loose (Areolar) Connective Tissue
Magnification ______X
Location: ______
Function: ______/ Adipose Tissue
Magnification ______X
Location: ______
Function: ______
Dense Connective Tissue
Magnification ______X
Location: ______
Function: ______/ Cartilage
Indicate type: ______
Magnification ______X
Location: ______
Function: ______
Bone
Magnification ______X
Location: ______
Function: ______/ Blood
Magnification ______X
Location: ______
Function: ______

Histology Lab Data

Muscle and Nervous Tissue

Skeletal Muscle Tissue
Magnification ______X
Location: ______
Function: ______/ Smooth Muscle Tissue
Magnification ______X
Location: ______
Function: ______
Cardiac Muscle Tissue
Magnification ______X
Location: ______
Function: ______/ Nerve Tissue
Magnification ______X
Location: ______
Function: ______

Color Key:

Nucleus

Cytoplasm

 Cell Membrane
Analysis: Match the tissues to its characteristics below. Place the letter of your choice in the space provided. Use each answer only once.

a.simple columnar epithelium

b.simple cuboidal epithelium

c.simple squamous epithelium

d.pseudostratified epithelium

e.stratified squamous epithelium

f.adipose tissue

g.blood

h.bone

i.dense connective tissue

j.cartilage

k.loose (areolar) connective tissue

l.cardiac muscle

m.nervous tissue

n.skeletal muscle

o.smooth muscle

______1. Has cells that lie in lacunae within the tissue.

______2. Younger cells are cuboidal, older cells flattened.

______3. Moves food through the digestive tract.

______4. Single layer of flattened cells.

______5. Striated and voluntary.

______6. Cells are greatly enlarged with nuclei pushed to the sides for storage.

______7. Binds skin to underlying organs.

______8. Contains large amounts of fluid matrix and lacks fibers.

______9. Nuclei located at different levels within cells.

_____10. Contains intercalated discs.

_____11. Cells are arranged around a central canal.

_____12. Main tissue of tendons and ligaments.

_____13. Commonly lines tubules and ducts like in the kidneys or salivary glands.

_____14. Nuclei of cells are located in a line near the basement membrane.

_____15. Transmits impulses along extensions of cytoplasm.

Saugus High School Lab Conclusion

Write the following conclusion following the Science Writing Guidelines. Use complex sentences in all sections.

1. Introductory statement with the purpose of this laboratory activity.

2. Summary of experiment with results. (This is slightly different from the standard conclusion for this lab).

  • Describethe four tissue categories present in the body and the characteristics that are common with that tissue.
  • Using ONE example from EACH tissue type, explain how the cells and components of the tissue exemplify the characteristics of that particular tissue type.

EPITHELIUM

CONNECTIVE

MUSCLE

NERVOUS

3. Describe any real or possible error. If you had real error, explain why this error occurred. If no error occurred, explain why another group had error or theorize where error could occur.

4. Paraphrase and cite the textbook or other reference material (using MLA format) and explain whether the results of this lab confirm or refute the scientific concepts in the material.

5. Provide a concluding statement that is evidence-based (facts and data). Remember, no opinions or feelings.

  1. Works Cited (MLA format)

Conclusion Rubric

4 / 3 / 2 / 1 / 0
Introductory Statement
_____/2 / Clear, concise statement with purpose OR problem and hypothesis / Unclear, or partially complete statement / Missing or did not following directions.
Summary
_____/4 / All stages of the lab are clearly summarized. / All stages of the lab are discussed, but somewhat unclear or too short. / Missing one stage of the lab in the summary. / Missing multiple stages of the lab in the summary and/or summary is very unclear. / Missing or did not following directions.
Error
_____/2 / Real or possible error is clearly discussed. / Real or possible error is discussed, but explanation is too short or unclear. / Missing or did not following directions.
Textbook or Other Material Reference
_____/4 / Accurate reference with all required information. Clear explanation of confirmation or rebuttal of scientific information in reference material. / Accurate reference, but explanation of reference material is somewhat unclear, too short or slightly flawed. / Minimal explanation or some missing information. / Inaccurate reference and/or some missing information and/or unclear explanation. / Missing or did not following directions.
Concluding Statement
_____/2 / Clear and concise statement with facts and data. / Statement is unclear or lacking facts and data. / Missing or did not following directions.
Works Cited
_____/1 / Contains appropriate resources and citations. / Missing or not in MLA format.

Total ______/15

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