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Tissues (Ch.4)
N/A
44
Anatomy
Undergraduate 2
08/31/2011

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Cards

Term
What are the four basic types of tissue?
Definition
epithelium, connective, muscle, and nervous
Term
Define epithelium
Definition
a sheet of cells that cover a body surface or line a body cavity
Term
Provide the synonyms for connective, epithelial, muscular, and nervous tissue
Definition
support, covering, movement, and control
Term
What is the function of epithelial tissue?
Definition
covers body surface and lines hollow organs, body, cavities, ducts; forms glands
Term
What is the function of connective tissue?
Definition
Protects, supports, and binds organs; stores energy as fat; provides immunity
Term
What is the purpose of muscular tissue?
Definition
Movement and body heat
Term
What is the purpose of nervous tissue?
Definition
Detects and responds to changes in and around the body
Term
What are the two basic componenets of all tissues?
Definition
The cellular (living) and extracellular component (non-living)
Term
Define interstitial fluid
Definition
tissue fluid that is derived from blood plasma; found in extracellular component
Term
What are the seven special features of epithelia?
Definition
Cellularity, avascular, nervous innervation, regeneration, polarity, basement membrane, and membrane junctions
Term
Define cellularity
Definition
cells are closely packed and held tightly together; has minimal extracellular matrix
Term
What makes a picture of epithelial tissue easily identifiable?
Definition
Free surface
Term
What two terms are used to describe polarity?
Definition
apical (free) surface and basal surface (adheres to basement membrane)
Term
What are the two components of the basement membrane?
Definition
basal (secreted by epithelial tissue) and reticular lamina (secreted by underlying CT cells)
Term
Define membrane junctions
Definition
contact points in the plasma membrane of adjacent cells
Term
What are the three types of membrane junctions and their purpose?
Definition
desmosomes (prevents cells from being pulled apart), gap junction (let inside cell A to talk to inside cell B), and tight junctions (sealant)
Term
What are the different classifications for epithelia?
Definition
Simple or Stratified; Squamous (flat), Cuboidal (same shape all around), or Columnar
Term
What is the function of each epithelial cell shape?
Definition
Squamous: allow rapid passage of substances
Cuboidal and Columnar: secretion or absorption
Term
Where can you find simple squamous epithelium?
Definition
The lining of the ventral body cavity
Term
What are the two specialized types of simple squamous epithelia and where are they found?
Definition
Endothelium (heart and vessels) and Mesothelium (serous membranes)
Term
What type of cell will NOT be depicted with the ciliated variety?
Definition
simple columnar epithelium
Term
What type of cell will ONLY be depicted with the ciliated variety?
Definition
Pseudostratified columnar epithelium
Term
What type of cell contains keratonized and non-keratonized regions?
Definition
stratified squamous epithelium
Term
What is the purpose of stratification in a cell?
Definition
to protect areas that come in contact with large amounts of friction (keeps tissue from pulling apart)
Term
What lipid is responsible for maintaining the integrity of the plasma membrane?
Definition
cholesterol
Term
What is the purpose of glycolipids in the phospholipid bilayer?
Definition
cellular adhesion, recognition, and growth/development
Term
What are the main components of the plasma membrane?
Definition
lipids and proteins
Term
What are the two layers of serous membrane?
Definition
visceral layer and parietal layer
Term
Where can you find simple columnar epithelium?
Definition
The GI tract
Term
What are the two classifications of glands?
Definition
Endocrine and exocrine
Term
What is the name for a unicellular exocrine gland?
Definition
a goblet cell
Term
What is the largest gland in the body?
Definition
the liver
Term
What are the secretions of endocrine glands?
Definition
hormones
Term
What epithelial type is the goblet cell?
Definition
simple columnar
Term
What is the most diverse and abundant type of tissue?
Definition
Connective Tissue (CT)
Term
What are the four main categories of connective tissue?
Definition
CT Proper, Cartilage, Bone, and Blood
Term
What is the embryonic origin of connective tissue?
Definition
Mesenchyme
Term
What fibers are present in CT and what are their purpose?
Definition
Collagen fibers (strength), Elastic fibers (recoil), and Reticular fibers (support)
Term
Where can you find simple cuboidal epithelium?
Definition
ducts/secretory portions of small glands; kidney tubules
Term
Where can you find stratified cuboidal epithelium?
Definition
Big glands and ducts (salivary)
Term
Where can you find stratified columnar epithelium?
Definition
male urethra
Term
What are the three principal functions of epithelial tissue?
Definition
Selective barrier, secretory surfaces, and protective surfaces
Term
Where can you find non-keratinzed stratified squamous epithelium?
Definition
esophagus, mouth, and vagina
Term
Where can you find pseudostratified columnar epithelium?
Definition
trachea
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