Epithelial Flashcards
Compound Duct
Multiple tubes together
Simple duct
One singular duct
Endocrine Gland
- Lacks ducts
- Produces hormones which pass into surrounding tissues and blood
Exocrine Gland
- Has Ducts
- Secretes via body cavities or body surfaces
Two features used to classify epithelial tissue
- Number of cell layers
- Shape of cell
4 Primary tissue types
- Muscle
- Nervous
- Epithelial
- Connective
Nervous tissue Ex. and functions
- Brain, Spinal chord, Nerves
- Communication
Epithelial tissue Ex. and function
- Lining of GI tract, Hollow organs, Skin Surface
- Coverings, controlling movement across surface
Muscle tissue Ex. and functions
- Cardiac, Smooth, Skeletal
- Allows body to move
Connective tissue Ex. and functions
- Fat and other soft tissue, Bone, Tendon
- Binds body parts together, provides support and protection
Levels of structure
subatomic particles, atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms and biosphere
What kinds of cell junctions connect epithelial cells?
adherens junction
Do you see the apical or basal layer of skin?
Apical
Simple Squamous Function and Location
- Diffusion, lubricate organs
- Kidney, lining of heart, blood vessels
Simple cuboidal Function and Location
- Secretion and absorption
- kidney tubules, ducts, ovary surface
Simple columnar Function and Location
- absorption and secretion of mucus
- Digestive tract, uterine tubes, uterus
Pseudostratified columnar Function and Location
- Secrete mucus
- Trachea, sperm ducts, large glands and ducts
Stratified squamous Function and Location
- Protects tissues from trauma
- non-keratinized linings, mouth, vagina, esophagus
Stratified cuboidal Function and Location
- Protection
- Sweat glands, mammary glands, salivary glands
Stratified columnar Function and Location
- protection, secretion
- male urethra
Transitional cell Function and Location
- Stretches!
- lines ureters, bladder, and urethra
What does avascular mean?
- Lack of blood cells
How does Epithelial tissue regenerate although avascular?
- The number of cell divisions (created) within a tissue compensates for the number of cells lost