ch3 Flashcards
What are the four major families of tissues?
Epithelial tissue, Connective tissue, Muscular tissue, Nervous tissue
What are the types of cell junctions?
Tight junctions, Adherens junctions, Desmosomes, Hemidesmosomes, Gap junctions
What are the general features of epithelial tissue?
Cells arranged in continuous sheets, lateral surfaces, apical surface, basal surface, numerous cell junctions, avascular, high capacity for cell division
What are the two types of epithelial tissue?
Surface epithelium, Glandular epithelium
What are the classifications of surface epithelium based on layers?
Simple epithelium, Pseudostratified epithelium, Stratified epithelium
What are the cell shapes found in epithelial tissue?
Squamous, Cuboidal, Columnar, Transitional
What is simple squamous epithelium?
Single layer of flat cells with centrally located nucleus
What is the primary function of simple squamous epithelium?
Filtration, Diffusion, Secretion
What characterizes simple cuboidal epithelium?
Single layer of cube-shaped cells with round, centrally located nucleus
What is the primary function of simple cuboidal epithelium?
Secretion, Absorption
What defines nonciliated simple columnar epithelium?
Single layer of nonciliated column-like cells with oval nuclei near base
What is the function of nonciliated simple columnar epithelium?
Secretion, Absorption
What is the function of ciliated simple columnar epithelium?
Movement of mucus in respiratory tract, moving oocytes through uterine tubes
What is pseudostratified columnar epithelium?
All cells attached to basement membrane but not all extend to apical surface, appears multilayered
What is the function of ciliated pseudostratified columnar epithelium?
Secretes mucus, cilia sweep away mucus
What are the types of stratified epithelial tissues?
Stratified squamous, Stratified cuboidal, Stratified columnar, Urothelium (Transitional)
What is the function of stratified squamous epithelium?
Protection
What is unique about stratified cuboidal epithelium?
Very uncommon type with apical cells that are cube-shaped
What does urothelium (transitional epithelium) do?
Provides stretch in urinary organs, protection
What are the two types of glands formed by glandular epithelium?
Endocrine glands, Exocrine glands
What is the function of endocrine glands?
Make and secrete hormones that regulate metabolic and physiological activities
What is the function of exocrine glands?
Release secretory products into ducts
What are the structural classifications of exocrine glands?
Simple tubular, Simple branched tubular, Simple coiled tubular, Simple acinar, Simple branched acinar, Compound tubular, Compound acinar, Compound tubuloacinar
What are the functional classifications of multicellular exocrine glands?
Merocrine/eccrine, Apocrine, Holocrine
