Chapter 4
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What epithelial tissue is specialized to change in response to increased tension?
Transitional epithelium
What organ system is the ONLY one with transitional epithelium?
Urinary system
Tissue on a slide has two layers of cube-like shapes with centrally located nuclei. What are you observing?
Stratified cuboidal
Epithelial tissues always exhibit polarity (one free side and one attached) True or false?
True
What happens to epithelial tissue damaged from a paper cut?
Healed by regeneration
What muscle tissue is made of striated, multinucleated cells and acts under voluntary movement?
Skeletal muscle
Type of gland that secretes products by releasing entire cells are known as?
Holocrine glands
Blood platelets play a role in which of the following? • fighting infection • blood clotting • making up matrix of blood • transporting gases • none of the above
Blood clotting
Epidermis cells of skin need to be held tightly together to form an impermeable barrier. What junctions do this?
Tight junctions
EMC of connective tissues is made up of what? • protein fibers • ground substance • fixed and wandering cells • lacunae • heparin and keratin
Protein fibers and ground substance
Define histology
Study of tissues
What are the four major tissue types in the human body?
Epithelial Connective Muscle Nervous
Define/describe epithelial tissue
Tightly packed, no visible ECM, cover and line body surfaces/cavities. Specialized epithelia form glands
Define/describe connective tissue
Connect tissues to one another, ECM is prominent for most, cells are scattered They bind, support, and allow transportation
Define/describe muscle tissue
Can generate force by contracting, little ECM between cells. Types are cardiac, smooth, and skeletal
Define/describe nervous tissue
Can generate, send, and receive messages. Cells are within a unique ECM
Define extracellular matrix
ECM Surrounds cells within tissue. Can be gel, liquid, or solid. Made of ground substance and protein fibers. It provides resistance to tensile and compressive forces, directs and holds cells in proper position and place, regulates mitotic activity ,development, and survival of cells within tissue
Define ground substance
Makes up most of the ECM. Is made of water, nutrients, ions, and various types of macromolecules