Energy & Metabolism

Energy & Metabolism

By Dr. De Souza

Simple Epithelial Tissues

by Dr. De Souza

Objective:

By the end of the lesson, students will understand the function and basic types of epithelial tissue by completing a series of formative/Summative questions, and the final score should be a minimum of 70% level of accuracy.

​Agenda

• Objective and Introduction today's topic

• Survey

• ​Vocabulary

• ​S.E.L activity

• Science Literacy

• ​Lecture

• Formative and Summative assignmets

• ​Feedback

Poll

Survey

I can recognize

• 0

  Clueless

  Never Heard of it

• 1

  Basic Knowledge

  Need some tutoring

• 2

  Advanced Knowledge

  Can apply it

• 3

  Expert

  Can tutor others

Open Ended

Working with a partner or looking at the internet (2min), answer the following vocabulary question:

1. Tissue

2. Basal Surface

3. Cilia

Multiple Choice

By the end of this lesson, you will? Just ONE is correct.

• understand the function and basic types of epithelial tissue

• Complete a series of formative/Summative questions

• the final score should be a minimum of 70% level of accuracy.

• All alternatives

Multiple Select

Why is important our today's objective?. Mark all that apply.

• Epithelial tissue makes up most of the major structures in the body.

• The four primary functions of epithelial tissue are protection, absorption, filtration, and secretion. And we classify it by the number of layers and the shape of the cells in the top layer.

• It rests on a basement membrane that connects to an underlying connective tissue – this is important because it usually doesn’t have blood vessels and needs to get those nutrients from the vessels in the connective tissue. And remember, it’s highly regenerative.

Why is important our today's objective?

• Epithelial tissue makes up most of the significant structures in the body.

• It rests on a basement membrane that connects to an underlying connective tissue – this is important because it usually doesn’t have blood vessels and needs to get those nutrients from the vessels in the connective tissue.

• It’s highly regenerative.

• The four primary functions of epithelial tissue are protection, absorption, filtration, or secretion. And we classify it by the number of layers and the shape of the cells in the top layer.

Poll

By far, how will be your today's Participation?

• 1

  Excellent! I will take notes, participate asking , and reply to my teacher's oral questions

• 2

  I will participate in learning something new today, but my mood is being quiet today.

• 3

  I promise I will catch up on everything today during Office hours

​Science Literacy: Generalized Functions of Epithelial Tissue

• Epithelial tissues provide the body’s first line of protection from physical, chemical, and biological wear and tear. The cells of an epithelium act as gatekeepers of the body controlling permeability and allowing selective transfer of materials across a physical barrier. All substances that enter the body must cross an epithelium. Some epithelia often include structural features that allow the selective transport of molecules and ions across their cell membranes.

• Many epithelial cells are capable of secretion and release mucous and specific chemical compounds onto their apical surfaces. The epithelium of the small intestine releases digestive enzymes, for example. Cells lining the respiratory tract secrete mucous that traps incoming microorganisms and particles. A glandular epithelium contains many secretory cells.

​Summary

​In epithelial tissue, cells are closely packed with little or no extracellular matrix except for the basal lamina that separates the epithelium from underlying tissue. The main functions of epithelia are protection from the environment, coverage, secretion and excretion, absorption, and filtration.

​

Cells are bound together by tight junctions that form an impermeable barrier. They can also be connected by gap junctions, which allow free exchange of soluble molecules between cells, and anchoring junctions, which attach cell to cell or cell to matrix. The different types of epithelial tissues are characterized by their cellular shapes and arrangements: squamous, cuboidal, or columnar epithelia. Single cell layers form simple epithelia, whereas stacked cells form stratified epithelia. Very few capillaries penetrate these tissues.

Open Ended

Summative assignment

Summarize your understanding about Epithelial Tissue

(Minimum ONE paragraph response and 70% level of accuracy)

Retakes are welcome!

(hint: function, layers, shape, basement, avascular, Cilia, external, environment)

Poll

How do you feel about our questions level today?

• 1

  You made this look easy! I can teach someone

• 2

  I understood, but I cannot teach someone

• 3

  I need help

References​

​Sources

References:

• Anne M Gilroy, Brian R MacPherson, Lawrence M Ross and Michael Schuenke: Atlas of Anatomy, 2nd edition, Thieme.

• Edward J Goljan: Rapid Review Pathology, 3rd edition, Elsevier Saunders.

• Kumar, Vinay, Abul K. Abbas, Nelson Fausto, Stanley L. Robbins, and Ramzi S. Cotran: Robbins Basic Pathology, 9th edition, Elsevier Saunders.

• ​Zins, J. (2016). Social and Emotional Learning. Retrieved from healthyselfesteem.org: http://healthyselfesteem.org/about-self-esteem/social-and-emotional-learning/.[6]