List the 4 types of tissues found in the human body. - epithelial, connective, muscle, nervous
What is histology? - study of tissue
What are tissues made of? - 50 trillion cells of 200 different cell types
List the 3 types of epithelial cells according to their shape. - simple squamous, simple cuboidal, simple
columnar
What are the special features of epithelial tissue? - has a basement membrane, little blood supply and
rapid mitosis
According to the amount of layers, what are the 2 types of epithelial tissue? - simple and stratified
What is the main function(s) of simple squamous epithelial tissue? - permits rapid diffusion or transport
of substances
What is the main function(s) of squamous stratified epithelial tissue? - resists abrasion; retards water
loss through skin; resists penetration by pathogenic organisms
What is the main function(s) of the simple cuboidal epithelial tissue? - absorption and secretion, mucus
production and movement
What is the main function(s) of the stratified cuboidal epithelial tissue? - secretes sweat; sperm
production, and produces ovarian hormones
What is the main function(s) of the simple columnar epithelial tissue? - absorption and secretion; mucus
secretion
, List 2 organs where we find simple squamous epithelial tissue. - alveoli, glomeruli
List 2 organs where we find stratified squamous epithelial tissue. - esophagus-nonkeratinized
skin surface-keratinized
List 2 organs where we find simple cuboidal epithelial tissue. - liver, thyroid
List 2 organs where we find stratified cuboidal epithelial tissue. - sweat gland ducts; ovarian follicles
List 2 organs where we find simple columnar epithelial tissue. - lining of GI tract, uterus
What is transitional epithelial tissue? - multilayered epithelium surface cells that change from round to
flat when stretched
Give one organ where we find transitional epithelial tissue. - ureter and bladder
Regarding epithelial tissue, what is the basement membrane? - layer between an epithelium and the
underlying connective tissue
Is the extracellular matrix of epithelial tissue abundant or scarce? - scarce
What is a gap junction? - Electrical synapse (cardiac muscle)
What is the function of gap junctions? - rapid communication
What is a tight junction? - Water tight connection between 2 adjacent cell membranes
Does epithelial tissue have a lot of blood vessels? - No
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