Module 5 - Tissues (Histology) Flashcards
Composition of Tissues
Cells and Matrix
Matrix
non-living extracellular material composed of fibrous proteins & ground substance
Ground substance contains what?
WGMNH
contains water, gases, minerals, nutrients, hormones
Types of Tissues
Epithelial, Connective, Muscle, Nervous
Epithelial Tissue: location & characteristics
lines surfaces;
avascular - no blood supply;
Highly mitotic;
cells close together with very little matrix visible
What tissue type covers organ surfaces and form glands
Epithelial Tissue
Basement Membrane
deepest layer of large complex molecules between epithelial and under lying tissue; Helps anchors tissue
Apical Surface
superficial to basement membrane
Functions of Epithelial Tissue
PSEAFS
Protection Secretion Excretion Absorption Filtration Sensation
Cell Classification: Simple
single layer; every cell anchored to basement membrane
Cell Classification: Stratified
2-20 layers; deepest layer anchored to BM, others rest on top
Cell Classification: Pseudostratified Columnar
not all cells reach surface but all cells reach BM; often have goblet cells
Cell Classification: Transitional
vary in shape depending on whether the tissue is compressed
Connective Tissue
Most abundant; Vascular;
composed of matrix (protein fibers & ground substance)
Types of Connective Tissue
FATLCBB
Fibrous tissue, adipose tissue, tendons, ligaments, cartilage, bone, blood
Fibroblasts
produce fibers & ground substance that form matrix
Macrophages
specialized WBC that ingest and get rid of particles
Functions of Connective Tissue
BPSI-METH
Binding of organs Protection Support Immunity Movement Energy Storage Transportation Heat Production
Mast Cells: Location, Secretes ?, Regulates ?
found along blood vessels; secrete hormones; regulate blood flow & Clotting
Leukocytes
WBCs; protection
Plasma cells
specialized WBCs; Immunity
Adipocytes
Fat storing cells