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A+P chapter 4
vocab
63
Other
Not Applicable
10/10/2007

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Term
fibroblast
Definition
young, actively mitotic cell that forms the fibers of connective tissue
Term
chondroblast
Definition
actively mitotic cell of cartilage
Term
osteoblast
Definition
bone-forming cells
Term
transitional epithelium
Definition
A type of epithelial tissue characterized by its ability to expand in size and recoil, giving the organs it lines a feature of elasticity
Term
secretion
Definition
the formation and release of a substance in the body.
Term
gland
Definition
An organ that makes and releases substances to other parts of the body.
Term
Hematopoietic stem cell
Definition
The fourth classification of "blast cells" (undifferentiated cells), it produces blood cells, yet is different from the other blasts in that it doens't make the fluid matrix of the blood tissues
Term
White Blood Cell
Definition
Blood cells that act as the body'e defence to infections, mobile cells that enter matrix through blood stream
Term
avascular
Definition
containing no blood vessels
Term

goblet cell

Definition
individual cells (unicellular glands) that produce mucus
Term
pseudostatified columnar epithelium
Definition
one layer of cells of different shapes and heights; secreation and production of mucus; lines trachea
Term
stratified squamous epithelium
Definition
many layers of squamous cells; protects tissues underneath; lines mouth and esophagus, skin
Term
innervated
Definition
supplied by nerve fibers
Term
Simple Epithelia
Definition
A single cell layer that is typically found wehre absoption and flitration occur. Separated into three basic categories: columnar, squamous, and cubiodal epithelium
Term
Holocrine glands     
Definition
Glands that accumulate their secretions within their cells. The secretions are released when the cell ruptures and dies.
Term
Connective tissue
Definition
A primary tissue whose form and function varies. Some funcitons include support, storage, insulation, transportation and protection. It is the most abundant and widely distributed of the primary tissues. The four main classes of connective tissue are 1)Connective tissue proper 2) Cartilage 3) Bone tissue and 4) Blood. Three common characteristics of connective tissue is its common origin, degrees of vascularity, and the extracellular matrix.
Term
Endothelium
Definition
sigle layer of simple squamous cells that line the walls of the heart, blood vessels, and lymphatic vessels
Term
Mesothelium
Definition
The epithelium found in serous membranes lining the ventral body cavity and covering its organs
Term
Simple Squamous Epithelium
Definition
Single layer of squished cells - functions in diffusion - located in air sacs of lungs and capillaries
Term
Areolar Connective Tissue
Definition
Loose Connective Tissue
Term
Edema
Definition
Causes Swelling
Term
stratified epithelia
Definition
contain two or more cell layers
Term
squamous cells
Definition
are flattened and scalelike
Term

Basement Membrane

Definition

 Reinforces epithelial sheet, helping to resist strethching and tearing, defines epithelial boundary. Made up of the basal and recticular laminas.

Term
Reticular Lamina
Definition
a layer of extracellular material containing a fine network of collagen protein fibers that 'belongs to' the underlying connective tissue
Term
Mast Cells
Definition
Immune cells that function to detect foreign substances in the tissue spaces and initiate local inflammatory responses against them; typically found clustered deep to an epithelium or along blood vessels.
Term
Plasma Cells
Definition
Members of a B cell clone; specialized to produce and release antibodies.
Term
collagen fibers
Definition
the most abundant of the three fibers found in the matrix of the connective tissue; it is white, and because of it’s cross linking, very strong
Term
ground substance
Definition

the gel-like, unstructured material that fills the space between cells. It also contains fibers, holds fluid, and allows nutrients, adhesion proteins, and other substances to flow through it.

Term
extracellular matrix
Definition

the non-living material in connective tissue consisting of ground substance and fibers that separates the living cells; this is what makes connective tissue very strong

Term
apical surface
Definition
The outer surface of an epithelial cell microvilli and cilia on the outside to help protect the cell.
Term
basal surface
Definition
The outer surface of an epithelial cell that attaches to basil lamina, which is a sticky sheet of glycoprotein that helps to filter molecules from the body.
Term
Hyaline Cartilage
Definition
The most abundant cartilage type in the body; provides firm support with some pilability
Term
Chondrocytes
Definition
Mature cell of cartilage
Term
Dense Irregular Connective Tissue
Definition
Bundels of collagen fibers that are thick and arranged irregularly (running in more than one plane) and found in the skin as leathery dermis. Also, forms fibrous joint capsules and fibrous covering that surround the kidneys, nerves, bones, cartilage, and muscles.
Term
Cartilage
Definition
White, semiopaque connective tissue
Term
Cardiac Muscle
Definition

A specialized muscle of the heart.

Term
Intercalated Disks
Definition

Specialized connections between myocardial cells containing gap junctions and desmosomes.

Term
Smooth Muscle
Definition

Spindle-shaped cells with one centrally located nucleus and no externally visible striations (bands). Found mainly in the walls of hollow organs.

Term
Tubuloalveolar
Definition
gland that has both tubular and alveolar types of secretory units
Term
Acinar
Definition
synonym for alveolar; gland with secretory cells that from small, flasklike sacs
Term
Merocrine glands
Definition
type of glandular tissue which is a multicellular exocrine gland that secretes products by exocytosis as they are produced
Term
tubular
Definition
secretory cells that form tubes
Term
alveolar
Definition
secretory cells that form small, flasklike sacs
Term
Loose Connective Tissue
Definition
used to link epithelia to other parts of the organ wall,well vascularized and supplies the nutrients and controlling factors for the surrounding cells.
Term
Dense Connective Tissue
Definition
collagen fibers as its main matrix element. It is mainly composed of collagent type I. Crowded between the collagen fibers are rows of fibroblasts, fiber-forming cells, that manufacture the fibers. Tissue forms strong, rope-like structures such as tendons and ligaments.
Term
stratified cubodial epithelium
Definition
many layered epithelium tissue with cube-like cells, found in the ducts of larger glands (sweat & mammary glands), usually with 2 layers of cubodial cells
Term
stratified columnar epithelium
Definition
a many layered epithelium tissue with column-like cells, found in the man's urethra, the pharynx, and glandular ducts, and also in transition areas or junctions between two layers of epithelium, only the atypical layer is columnar
Term

Endocrine Glands

Definition
Ductless glands that empty their hormonal products directly into the blood
Term

Exocrine Glands

Definition
Glands that have ducts through which their secretions are carried to a particular site
Term

Unicellular Gland

Definition
A single secretory cell
Term
microvilli
Definition
tiny projections on the free surfaces of some epithelial cells, increase surface area
Term
cilia
Definition
tiny, hairlike projections on cell surfaces that move in a windlike manner
Term
basal lamina
Definition
non-cellular adhesive supportive sheet consisting largely of glycoproteins secreted by epithelial cells
Term
brown adipose tissue
Definition

brown fat adipose cell contining abundant mitochodria which uses the lipid fuels to heat the bloodstream to warm the body rather than produce ATP molecules

Term
white adipose tissue
Definition
stores nutrients
Term
mucin
Definition
a complex glycoprotein that dssolve in water when secreted
Term
mucus
Definition
a slimy coating that both protects and lubricates surfaces
Term

reticular connective tissue

Definition

resembles areolar connective tissue

only fibers in martix are reticular fibers, widely distruted in the body... forms a labrynth-like stroma (bed/matress) supports many free blood cells

found in: lymphnodes, spleen, and bone marrow

Term
Stroma
Definition

The basic internal structural framework of an organ.(forms a bed/matress, cushion)

Term
Dense Regular Connective Tissue
Definition

A variety of densne connective tissue, all of which have fibers as their predominent element. Often referred to as fibrous connective tissue.

flexible structures, great resistance to tension

poorly vascularized

forms tendons, fascia, and ligaments

Term
fibrous connective tissue
Definition
(Dense regular connective tissue) fibers = predominent element
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