Tissue with single layer of epithelial cells
Tissue with multiple layers of epithelial cells
Squamous, Cuboidal, Columnar
The 3 shapes of epithelial cells
Flat epithelial cells with flat nucleas
Cubic epithelial cells with spherical nucleus
Tall epithelial cells with elongated nucleus
The top layer of an epithelium or epithelial cell
The bottom layer of an epithelium or epithelial cell
What the top most (apical) layer of epithelial cells face? ( ____ ____ )
Simple Squamous Epithelium
Classify This Tissue: single layer of flattened cells with disc-shape central nuclei and sparse cytoplasm(resemble a tiled floor).
Function: allow passage of materials by diffusion and filtration, secretes lubricant substances in serosae.
Location: Lining of heart, blood vessels, lining of ventral cavity (serosae)
Simple Cuboidal Epithelium
Classify This Tissue: consist of a single layer of cells as tall as they are wide.
Function: Secretion and absorption.
Location: kidney tubules, ovary surface
Simple Columnar Epithelium
Classify This Tissue: Is seen as a single layer of tall , closely packed cells, aligned like a soldiers in a row with round to oval nuclei.
Function: Secretion, and absorption.
Location: urine tubes, gallbladder.
Pseudostratified Columnar Epithelium
Classify This Tissue: Single layer of cells of differering heights, some not reaching the free surface; nucleia seen at different levels.
Function: Secretion, particularly of mucus.
Location:most of the upper respiratory tract.
Stratified Squamous Epithelium
Classify This Tissue: Composed of several layers, it is thick and well suited for its protective role in the body. Its free surface cells are squamous, and cells of the deeper layers are cuboidal or columnar.
Function: Protects underlying tissues in areas subjected to abrasion.
Location: mouth and vagina(..protection)
Classify This Tissue: Cells of its basal layer are cuboidal or columnar.The apical cells vary in apperance, depending on the degree of distention of the organ. (surface cells dome shaped).
Function: Streches readily, and permits distention of urinary organs by contained urine.
Location: urinary bladder and part of the urethra.
Special name for epithelial tissue that lines the interior of the circulatory vessels and the heart
Special name for the epithelial tissue that lines the peritoneal, pleural, and pericardial cavities (i.e. Serosae)
are groups of cells having the same structural characteristics and performing the same functions.
Four basic tissue types found in humans
Epithelial tissue, Connective tissue, Muscle tissue, and Nervous tissue.
6 functions of epithelial tissues
Protection, absorption, filtration, excretion, secretation, and sensory reception.
Consist of one or more cells that marks and secrete (export)a particular product.
Secrete chemicals regulators calles hormones directly into the blood. Are known as "ductless glands"
Secrete their products onto body surfaces (skin) or into body cavities. Are known as "ducted glands"
What type of gland are Goblet cells?
Unicellular exocrine glands. Cells look like a glass witrh a stem.
What do goblet cells produce?
Secretes the glycoprotein mucin, which combines with water to form mucus.
In what tissue type did you see goblet cells today?
Epithelial cell of the digestive tract, where secretes mucus.