Epithelial Tissue Flashcards
Covers a body surface or lines a body cavity
Epithelial tissue
Forms parts of most glands
Epithelial Tissue
Protection, Secretion, Absorption, Diffusion, Filtration, Sensory reception
Functions of Epithelia
Epithelial are composed almost entirely of cells. These cells are separated by minimal extracellular material
Cellularity
Adjacent epithelial cells joined by the special junction
Specialized contacts
The cell’s region near the apical surface differs from those near the basal surface.
Polarity
space within tube: the space inside any tubular structure in the body such as an intestine, artery, or vein
Lumen
Not associated with or supplied by blood vessels.
Avascular
To supply (an organ or a body part) with nerves.
Innervate
Lost cells are quickly replaced by cell division The tissue with the greatest capacity for regeneration is epithelium
Regeneration
cells are wider than tall (plate-like)
Squamos
cells are as wide as tall, like cubes
Cuboidal
cells are taller than they are wide, like columns
Columnar
single layer; form the thin serous membranes, flat cells with disc-shaped nuclei, What tissue is this
Simple Squamous Epithelium
The function of this tissue is for the Passage of materials by passive diffusion and filtration, Secretes lubricating substances in serosae
Simple Squamous Epithelium
The location of this tissue is the Alveolar sacs of the lungs, Renal corpuscles, and Alveoli of lung, Lining of the heart, blood, and lymphatic vessels, and the Lining of the ventral body cavity (serosae)
Simple Squamous Epithelium
A single layer of cubelike cells with large, spherical central nuclei, what tissue is this
Simple cuboidal Epithelium
The function of this tissue is secretion and absorption
Simple Cuboidal Epithelium
The location of this tissue is the Tubules of the kidney, secretory portions of small glands, ovary surface
Simple Cuboidal Epithelium
A single layer of column-shaped (rectangular) cells with oval nuclei, What tissue is this
Simple Columnar Epithelium
The function of this tissue is Absorption; secretion of mucus, enzymes, and other substances. Ciliated type propels mucus or reproductive cells by ciliary action
Simple Columnar Epithelium
The location of this tissue is the Lining of the stomach, digestive tract, gallbladder, and ducts of some glands and Lines of small bronchi, uterine tubes, and uterus
Simple Columnar Epithelium
May contain goblet cells and bear cilia, Nuclei lie at varying heights within cells, What tissue is this
Pseudostratified Columnar Epithelium
The function of this tissue is secretion of mucus; propulsion of mucus by cilia
Pseudostratified Columnar Epithelium
The location of this tissue is Ducts of male reproductive tubes, Ducts of large glands, Lines of trachea, and most of the upper respiratory tract
Pseudostratified Columnar Epithelium
Many layers of cells are squamous in shape, Deeper layers of cells appear cuboidal or columnar, Thickest epithelial tissue
Stratified Squamous Epithelium
Two types of Stratified Squamous Epithelium
Keratinized and Nonkeratinizied
Tension-resisting protein found in the epidermis, hair, and nails; ________ makes these structures tough and able to resist friction
Keratin
Protects underlying tissues in areas subject to abrasion
Keratinized
Forms epidermis
Keratinized
forms lining of mucous membranes, Esophagus, Mouth, Anus, Vagina, Urethra
Nonkeratinized
Forms moist lining of body openings
Nonkeratinized
Generally two layers of cube-shaped cells, what tissue is this
Stratified Cuboidal Epithelium
The function of this tissue is protection
Stratified Cuboidal Epithelium
The location of this tissue is the Mammary glands, Salivary glands, and Largest sweat glands
Stratified Cuboidal Epithelium
several layers; basal cells usually cuboidal; superficial cells elongated
Stratified Columnar Epithelium
The function of this tissue is protection and secretion
Stratified Columnar Epithelium
The location of this tissue is a Rare tissue type, Found in the male urethra and large ducts of some glands
Stratified Columnar Epithelium
Has characteristics of stratified cuboidal and stratified squamous, Superficial cells dome-shaped when the bladder is relaxed, squamous when full, what tissue is this
Transitional Epithelium
The function of this tissue permits distension of urinary organs when they are filled with urine
Transitional Epithelium
The location of this tissue is the epithelium of the urinary bladder, ureters, proximal urethra
Transitional Epithelium
The function of __________ epithelium is secretion, which is accomplished by glandular cells.
Glandular
the hypothalamus, pituitary, thyroid, parathyroids, adrenals, pineal body, the ovaries, and the testes are all examples of what gland
Endocrine Glands
Mucus-secreting glands, Sweat and oil glands, Salivary glands, Liver, and pancreas are all examples of what gland
Exocrine glands
