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Make certain that you can define, and use in context, each of the terms listed below, and that you understand the significance of eachof the concepts.1.Define the termtissue, and classify the tissues of the body into four major types.
2.Describe the structure and functions of the five principal types of cell junctions.
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Chapter 3 / Exercise 1
Human Physiology: From Cells to Systems
Sherwood
Expert Verified
Cell junction:Most epithelial cells and some muscle and nerve cells are tightly joined into functional units.Cell junctionsarecontact points between the plasma membranes of tissue cells. There are five important types of cell junctions:Tight junction:These consist of web like strands of transmembrane proteins that fuse together the outer surfaces of adjacent plasmamembranes to seal off passageways between adjacent cells. They inhibit the passage of substances between cells and prevent thecontents of these organs from leaking into the blood or surrounding tissues. (Ex. Epithelial tissue that lines the stomach, intestines andurinary bladder have tight junctions).Adherens junction:These contain plaque, a dense layer of proteins on the inside of the plasma membrane that attaches both tomembrane proteins and to microfilaments of the cytoskeleton. Transmembrane glycoproteins calledcadherinsjoin the cells. Each

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Term
Fall
Professor
Allan Kew
Tags
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Human Physiology: From Cells to Systems
The document you are viewing contains questions related to this textbook.
Chapter 3 / Exercise 1
Human Physiology: From Cells to Systems
Sherwood
Expert Verified

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