Answered: . Define diffusion. Is diffusion a…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 6RE

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a. Define diffusion. Is diffusion a passive or an active process? Explain how solute moves in this way.

b. Use your knowledge of diffusion to explain what happened over time when you observed a crystal of methylene blue dropped into a beaker of water. Be sure to use equilibrium in your explanation.

c. Explain your observations over time after a drop of methylene blue and a drop of potassium permanganate were placed in the agar. What factors affect the rate of diffusion?

d. What are tissues? Name the four major types of tissues in the human body.

e. Name the three primary germ layers. Name the primary germ layers from which epithelial tissues and connective tissues develop.

f. List general characteristics that all epithelial tissues have in common.

g. Name the functions of epithelial tissue. Which type of epithelial tissue is found in areas that need protection?

h. Know how to identify simple squamous epithelium, simple cuboidal epithelium, simple columnar epithelium, and stratified squamous epithelium in an image of a microscope slide. Name at least one location in the body where each specific tissue listed above is found.

i. What is the function of goblet cells? In which tissue listed above did you observe these cells? Know how to identify goblet cells in an image of a microscope slide.

g. Know the general characteristics that all connective tissues have in common. Remember that connective tissues have a large amount of intercellular space called matrix. Matrix is made of ground substance (anywhere from liquid to rigid depending on the tissue) and fibers (collagen and/or elastic).

k. Name the functions of connective tissue.

l. Areolar connective tissue is a type of loose connective tissue.

-What types of cells are found in this tissue? Give their functions.-

-What types of fibers?

-Where is this tissue found? What are its functions?

-Know how to identify areolar connective tissue in an image of a microscope slide.

m. Adipose tissue is another type of loose connective tissue.

-What are the cells called in this tissue?

-Where is this tissue found? What are its functions?

-Know how to identify adipose tissue in an image of a microscope slide.

n. Dense irregular connective tissue

-What makes this tissue type different from the loose connective tissues?---What is the predominant cell type?

-What is the predominant fiber type?

-Where is this tissue found? What are its functions?

-Know how to identify dense irregular connective tissue in an image of a microscope slide.

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