Chapter 5 Flashcards
What are the three types of intercellular junctions?
Tight – fusion of thin linings and membranes
desmosome – spot welds for tough structural reinforcement
gap – tubular channels
What does an epithelial tissue cover and line?
It covers the organs and body surface and lines cavities and hollow organs
What are the three types of cells identified with epithelial tissue? Layers?
Squamous, cuboidal, and columnar.
Simple, stratified, pseudostratified
What do epithelial tissues lack?
Blood vessels
When identifying an epithelial tissue what do you look for?
Free space and basement membrane
What are the basic characteristics of simple squamous epithelium?
One layer, then flat cells, delicate, lines air sacs infiltration sites, lines blood vessels, has a free space and a basement membrane
What are the basic characteristics of a stratified squamous epithelium?
Multiple layers, outer cells are flat, enter cells are thicker and gathered where mitosis occurs, it is the outer layer of the skin, the outer layer is keratinized, and it lines exit sites
What type of tissue are tendons made up of?
Dense regular Connective tissue fibers collagen and fibroblasts,
What are the characteristics of tendons?
They are slightly elastic, have a poor blood supply, and flexible and strong
What type of tissue or ligaments made of?
Dense regular connective tissue
What are some characteristics of ligaments?
Slightly elastic, strong, flexible, and poor blood supply
What type of tissue is cartilage made of?
Specialized connective tissue, the cells are chondrocytes for support and protection
What are the three types of cartilage?
Hyaline – common, fine, nose
Elastic – flexible, ear
Fibrocartilage – tough, Shock absorber, knee
What are fibroblast?
The most common fixed cell, large star shape, secretes protein fibers such as collagen elastic and reticular
What are the three protein fibers that fibroblasts secrete?
Collagen, elastic, reticular
