Chapter 4 Flashcards
Epithelial tissue
Covers exposed surfaces
Lines internal passageways and chambers
Produces glandular secretions
Connective tissue
Fills internal spaces
Provides structural support
Stores energy
Transports
Muscle tissue
Contracts to produce movement
Nervous tissue
Propagates electrical impulses.
Carries information.
Epithelial tissue includes
epithelia and glands
What are the 4 functions of epithelial tissue
- Provides physical protection
- Control permeability
- Provide sensation
- Provides specialized secretions
How is the integrity of epithelia maintained?
by intercellular connections, attachment to the basement membrane
and epithelial maintenance and repair.
Regeneration of epithelial tissue is possible by ____
continual division of stem cells
Simple squamous epithelium
Function: Reduces friction; controls vessel permeability; performs absorption and secretion.
Structure: Flat; lines the peritoneal cavity- helps with connective tissue. Works together with it in the alveoli of lungs.
Stratified squamous epithelium
Function: Provides physical protection against abrasion, pathogens, and chemical attack.
Structure: Superficial square, cubes; surface of skin, lining of mouth.
Simple cuboidal epithelium
Function: Limited protection, secretion, absorption
Structure: Works with connective tissue in kidney.
Stratified cuboidal epithelium
Function: protection, secretion, absorption
Structure: Works with connective tissue in sweat glands.
Transistional epithelium
Function: Permits repeated cycles of stretching without damage.
Structure: Blader, ureters, works with connective tissue and smooth muscle layers
Simple columnar epithelium
Functions: Protection, secretion, absorption
Structure: Tall, lining of stomach, intestine, gallbladder, ducts of kidneys.
Pseudostratified ciliated columnar epithelium
Function: Protection, secretion, move mucus and cilia.
Structure: Works w/ loose connective tissue in the trachea, lining of nasal cavity, and portions of male reproductive tract
Stratified columnar epithelium
Function: Protection
Structure: Small areas of the pharynx, epiglottis, anus, mammary glands, salivary gland ducts, and urethra; works w/ loose connective tissue, basement membrane, mix of tall and cubes.
Endocrine glands
release hormones that enter bloodstream, no ducts
exocrine glands
produce exocrine secretions and discharge secretions through ducts onto epithelial surfaces.
Goblet cells are
unicellular exocrine glands
What are the 3 components of connective tissues
- Specialized cells
- Extracellular protein fibers
- Fluid called ground substance
Matrix is made up of
extracellular protein fibers and ground substance.