Tissues Flashcards
What are the 4 major types of tissue?
epithelial, connective, muscle, nervous
What does epithelial tissue cover?
all body surfaces inside & out
What is epithelial tissue connected to?
underlying connective tissue at the basement membrane
How much of your body weight does skin account for?
15%
What are the functions of epithelial tissue?
protection, secretion, absorption, excretion, senses
How is epithelial tissue categorized?
based on the shape of the cells and their layers
What is the meaning of “simple”?
single layer
What is the meaning of “stratified”?
multiple layers
What is the meaning of “squamous”?
flat
What is the meaning of “cuboidal”?
square
What is the meaning of “columnar”?
column (rectangle)
What epithelial tissue is flat, thin, and a single layer?
simple squamous
What is the function of simple squamous tissue?
diffusion of oxygen and carbon dioxide
Where is simple squamous tissue found in the body?
air sacs in lungs
What epithelial tissue is cube shaped and a single layer?
simple cuboidal
What is the function of simple cuboidal tissue?
absorption and secretion
Where is simple cuboidal tissue found in the body?
ovaries, kidneys
What epithelial tissue has long cells and is a single layer?
simple columnar
What is the function of simple columnar tissue?
absorption of nutrients
Where is simple columnar tissue found in the body?
digestive tract (intestines)
What epithelial tissue is multi-layered and has squamous cells?
stratified squamous
What is the function of stratified squamous tissue?
protection
Where is stratified squamous tissue found in the body?
the outer layer of skin
What epithelial tissue appears “stratified” but is actually a single later and has nuclei at various levels?
pseudostratified columnar
What is the function of pseudostratified columnar tissue?
moves air, removes debris
Where is pseudostratified columnar tissue found in the body?
air passages (trachea)
What epithelial tissue is thick and has layered cuboidal cells?
transitional
What is the function of transitional tissue?
stretchable and waterproof
Where is transitional tissue found in the body?
urinary bladder
What is glandular epithelium/tissue?
cells specialized to secrete substances, make up the body’s glands (exocrine and endocrine)