Chapter 4: Tissue: The Living Fabric (A)

5 Written Questions

1. finger like extensions of the plasma membrane
2. adjacent to basal surface, noncellular adhesive sheet consisting of glycoprotiens secreted by epithelial cells.
   
   Functions: acts as a selective filter that determines which molecules diffusing from the underlying connective tissue are allowed to enter epithelium
3. fashions the glands of the body
4. 1.Polarity
   2. Specialized Contacts (cell close together/cell sheets)
   3. Supported by connective tissue
   4. Avascular but innervarted
   5. Regeneration
5. the epithelium found in serous membranes lining the ventral body cavity and covering its organs

5 Matching Questions

1. Stratified Cuboidal Epithelium
2. Innervated
3. Stratified Squamous Epithelium
4. Epithelial Tissue
5. Exocrine Glands

1. a
   Description: thick memabrane composed of several cell layers; basal cells are cuboidal or columner and metablically active; in the keratinized type the surface cells are full of keratin and dead; basal cells are active in the mitosis and produce the cells of the more superficial layers
   
   Function: protects underlying tissues in areas subjected to abrasion
   
   Location: Nonkeratinized type forms the moist linings of the esophagus, mouth, and vagina; keratinized variety forms the epidermis of the skin, a dry membrane
2. b a sheet of cells that covers a body surface or lines a body cavity. Functions: protection, absorption, filtration, excretion, secretion, and sensory reception
   
   epithelium (plural: epithelia), (epithe = laid on, covering)
   
   (2 main types: Covering and Lining and Glandular Epithelium
3. c More numerous than endocrine glands, secrete products into ducts and secretion released onto the body surfaces (skin) or into body cavities to reduce friction
   
   ex: mucous, sweat, oil, and salivary glands
4. d
   Quite rare in body, Found in some sweat and mammary glands, Typically two cell layers thick
5. e supplied by nerve fibers

5 Multiple Choice Questions

1. comes to be after Mucin is dissolved; a slimy coating that both protects and lubricates surfaces
   1. Fixed
   2. Mucin
   3. Squamous
   4. Mucus
2. slices
   1. Squamous
   2. Stained
   3. Mucin
   4. Sections
3. 
   cells regions near the apical surface differ from those near the basal surface in both structure and function
   1. Basal Lamina
   2. Apical-Basal Surface
   3. Epithelial Tissue
   4. Reticular Lamina
4. consists of one or more cells that make and secrete (export) a particular product. This product, called secretion, is an aqueous (water based) fluid that usually contains proteins
   
   ex: some glands release a lipid or steroid rich secretion
   1. Stained
   2. Gland
   3. Mucin
   4. Fixed
5. contains no blood vessels
   1. Mucus
   2. Avascular
   3. Tissues
   4. Mucin

5 True/False Questions

1. (2) Cell Types → 1. Squamous
   2. Cuboidal
   3. Columner

   True        False

2. Covering and Lining Epithelium → forms the outer layer of the skin, dips into and lines the open cavities of the cardiovascular, digestive, and respiratory systems, and covers the walls and organs of the closed ventral body cavity

   True        False

3. Artifacts → minor distortions that altered tissues contain

   True        False

4. Simple Cuboidal Epithelium →
   layer may contain mucous-secreting unicellular glands (goblet cells)
   
   Function: absorption; secretion of mucus, enzymes and other substances; ciliated type propels mucus (or reproductive cells) by ciliary action
   
   Location: Nonciliated type lines most of the digestive tract (stomach to anal canal), gallbladder, etc

   True        False

5. Basement Membrane → formed together by Basal and Reticular laminae
   
   Functions: reinforces the epithelial sheet, helping it to resist stretching, and tearing forces

   True        False