Anatomy and Physiology Chapter 4 Questions with Correct Solutions

tissue - group of cells that usually have a common origin in an embryo and function together to carry out specialized functions histology - science that deals with the study of tissues pathologist - a physician who specializes in the laboratory studies of cells and tissues to help other physicians make accurate diagnosis epithelial tissues connective tissue nervous tissue - what are the three types of body tissues? nervous tissue - the type of tissue that detects changes in conditions inside and outside the body and responds by generating electrical signals that activate muscular contractions and glandular secretions connective tissue - the type of tissue that protects and supports the body and its organs epithelian tissue - the type of tissue that covers body surfaces and lines hollow organs, body cavity, ducts, and form glands. to allow the body to interact with both its internal and external environment - what is the function of epithelial tissue? to protect and support the body and its organs - what is the function of connective tissue? to respond to conditions inside and outside the body - what is the function of nervous tissue? biopsy - the removal of a sample of living tissue for microscopic examination epithelial tissue - nervous tissue - muscular tissue - connective tissue - epithelial tissue cells are tightly packed with no extracellular matrix. connective tissue has large amounts of extracellular matrix. epithelial tissue has no blood vessels most connective tissue have significant networks of blood vessels. epithelial tissues almost always form surface layers. connective tissue is covered by other layers apical free surface, layers, packed, extracellular matrix, blood supply - state the main differences between epithelial and connective tissues epithelial tissues lack blood vessels and form surfaces and they must be able to make the exchanges with blood necessary for the delivery of oxygen and nutrients and the removal of wastes - why are epithelial and connective tissues found adjacent to each other? 1. selective barriers that limit or aid the transfer of substances into and out of the body 2. secretory surfaces that release products produced by the cells onto their free surfaces? 3. protective surfaces that resist the abrasive influences of the environment transfer, secrete, protect - what are the three major functions of epithelial tissues? basal lamina and reticular lamina - the basement membrane consists of what two layers? basal lamina - which of the the basement membrane layers is secreted by the epithelial cells? laminin - what molecule in the basal lamina adheres to integrins in hemidesmosomes? reticular lamina - which of the basement membrane layers is closer to the underlying connective tissue? fibroblasts - collagen producing cells found in the reticular lamina of the basement membrane 1. attaching to and supporting the overlying epithelial tissue 2. form a surface along which cells migrate during growth or wound healing 3. restrict passage of larger molecules between epithelial and connective tissue 4. help filter blood in the kidneys attach, migrate, restrict, kidney filter - what are the four functions of the basement membrane? avascular - without blood vessels a high rate of cell division