Studied by 10 people
4 Types of Tissue
epithelial -muscle -connective -nervous tissue
Tissue
group of similar cells that together carry out a specific job
Histologist
Study of tissue
Pathologist
studies the diseases of cells and tissues
Cellularity
more cells than matrix
Junctions
Anchor cells together so it can remain in a continuous sheet
Basement Membrane
bottom of epithelial tissue that has glycoproteins and reticular fibers
Microvilli
increases surface area for absorption
Avascular
no blood vessels
Cilia
sweepers and cleaners
Simple Squamous
diffusion, permeability, filtration, slick
Lungs, heart, blood vessel, kidneys
Simple Cuboidal
-one layer -secretes -glands
Endocrine Glands
secretes hormones directly into blood
Exocrine Glands
products are carried by a duct to a hollow organ (digestive enzymes) or out of body (sweat)
Simple Columnar w/ microvilli
absorption of nutrients -intestines
Simple Columnar w/ cilia
sweeps eggs -fallopian (uterine) tube
Pseudostratified Columnar
-secretes mucus, sweeps out debris -upper respiratory tract (trachea, bronchi, bronchioles)
Goblet Cells
Single cell gland that secrete mucus
Stratified Epithelium
-more than one layer, classified by top layer
Stratified Squamous
-takes friction, is a barrier, protects from fluid loss -Esophagus, skin, mouth
Connective Tissue
Type of tissue that stratified squamous sits on top of
Mitotic Cells
Cells in the stratified squamous tissue that regenerate (mitosis)
Melanocytes
make and release melanin
melanin
skin, eye, and hair pigment
Keratin
waterproof protective top layer of skin
Stratified Cuboidal
-layered -secretes -glands
Desquamification
Friction causing top layer of stratified squamous cells to fall off
Transitional Epithelium
-stretch to squamous shape (full) to cuboidal (empty)
urinary bladder
Stratified Columnar
protection
surrounds sphincter muscles, at end of stomach
