Tissues Flashcards
What are the four primary types of tissues?
Epithelial, Connective, Muscle, Nervous
Which one of the four types of primary tissues have the following functions:
- Cover & Line other Tissues
- Protect Underlying Tissues
- May Absorb, Secrete, or Excrete Biochemical Substances
- May Play a Role in Reception of Sensory Input
Epithelial Tissue
What is an example of (location) epithelial tissue?
Skin
What does avascular mean?
Doesn’t have it’s own blood supply
On an epithelial cell, which surface faces the lumen or outside of the organ?
Apical Surface
On an epithelial cell, which surface faces the basal lamina and blood vessels?
Basal Surface
Most epithelial cells are innervated. What does innervated mean?
Provides sensory input to the nervous system
On an epithelial cell, which surfaces are connected to neighboring cells by junctional complexes?
Lateral Surface
Epithelial tissue is classified by which three characteristics?
Number of Layers of Cells, Shape of Cells, Surface Specializations
What are the two groups of the epithelial characteristic “number of layers of cells”?
Simple, Stratified
How many layers of epithelial cells does a “simple” tissue have?
One
How many layers of epithelial cells does a “stratified” tissue have?
Many
Think stadium seats
What are the three groups of the epithelial characteristic “Shape of Cells”?
Squamous, Cuboidal, Columnar
What shape are squamous epithelial cells?
Flat
What shape are cuboidal epithelial cells?
Square/Cubed
What shape are columnar epithelial cells?
Rectangular
What are the three groups of the epithelial characteristic “Surface Specializations”?
Smooth, Microvilli, Cilia, Keratin
Which epithelial surface specialization increases cell surface area for absorption/secretion?
Microvilli
Where can the epithelial surface specialization “microvilli” be found?
GI Tract
Which epithelial surface specialization coordinates beats for propulsion? (hairlike)
Cilia
Where can the epithelial surface specialization “cilia” be found?
Respiratory Tract
Which epithelial surface specialization is used to protect and waterproof?
Keratin
Where can the epithelial surface specialization “keratin” be found?
Skin
`What does “simple squamous epithelium” mean?
Epithelial Tissue with One Layer of Flat Cells