Tissues: Homework Flashcards
Characteristics of Epithelial tissue
- forms outer skin layer
- forms some glands
- not attached to one side
- cells tightly packed
- one side attached to basement membrane
simple columnar
one layer of tall, thin cells
- lines most of digestive tract
- often has cilia and goblet cells
- functions in absorption and secretion
stratified squamous
multiple layers of flat cells
- may be keratinized or unkeratinized
- forms epidermis of skin
transitional
the number of layers varies
- lines urinary bladder
simple squamous
one layer of flat cells
- functions in diffusion and filtration
- lines blood vessels and alveoli of lungs
simple cuboidal
one layer of cells that are equally tall and wide
- forms kidney tubules and parts of some glands
- functions in absorption and secreation
stratified columnar
multiple layers of tall, thin cells
pseudostratified (columnar)
appears to have multiple layers but does not
- lines trachea and upper respiratory tract
- often has cilia and goblet cells
- traps inhaled dust and moves it out of airway
stratified cuboidal
multiple layers of cells that are equally tall and wide
goblet cells are
unicellular glands
the secretion from goblet cells dissolves to form
mucus
glands that release their product into the blood are
endocrine glands
glands that release their product into the ducts are
exocrine glands
Sweat and oil glands are both examples of
exocrine glands
Glands that secrete hormones are
endocrine glands
Epithelium tissue
- avascular
- rapid growth
- little matrix
- secretion
- covers organs
- filtration and diffusion
connective tissue
- vascular
- moderate growth
- lots of matrix
- forms blood cells
- forms skeleton
- binds things together
areolar
- forms packing material between organs
- has both collagen and elastic fibers scattered in gel-like matrix with macrophages and mast cells
adipose
- commonly called “fat tissue”
- insulates and cushions body
reticular
- network of short fibers with cells scattered throughout
- froms the framework of the spleen and liver
dense regular
- gives strength to tendons and ligaments
- collagen fibers all run parallel to each other
dense irregular
- forms dermis of skin and joint capsules
- has collagen fibers that run many directions
elastic
-found in the walls of arteries
cartilage is different from most connective tissue because it
is avascular
lacunae are
spaces occupied by cells
the cells that make cartilage are called
chondrocytes
which type of cartilage is very flexible?
elastic cartilage
Which type of cartilage is most common?
hyaline cartilage
Which type of cartilage is very strong?
fibrocartilage
Bone tissue is different from other connective tissue because it
has a hard matrix
The cells that make bone tissue are called
osteoblasts
blood is different from other connective tissue because it has
a liquid matrix
Swelling
increased capillary permeability
Pain
increased fluid pressure on nerve endings and release of inflammatory chemicals
heat and redness
dilation of capillaries at site of injury
What happens second?
growth of granulation tissue
Replacement of normal tissue with scar tissue is called
regeneration
Which tissue regenerates most rapidly?
epithelium
Which is usually replaced by scar tissue if damaged?
cardiac muscle
