0318 - Four Primary Tissue Types - EG Flashcards
What is histology?
The study of tissues. Important to understand normal function and disease processes.
What is a tissue?
a group of similar cells, specialised in a particular way for the performance of a common function.
What is a haematoxylin stain?
A blue stain of negatively charged tissue such as the nuclei of cells.
What is an eosin stain?
A pink stain of positively charged tissue, such as cytoplasm of cells and collagen.
What are the four basic tissue types?
epithelium, connective, muscle, and nervous.
List some function of epithelial tissues with an example for each.
barrier, skin; secretion, breast; absorption, small intestines; excretion, kidney; diffusion, lungs; sensation, taste buds.
List the ways in which epithelia are classified.
number of layers (single/simple, multiple/stratified, pseudostratified); shape or morphology (squamous, cuboidal, columnar); special features (cilia, microvilli, goblet cells, cell junctions)
What are tight junctions? Where in the body are tight junctions found?
two closely apposed cytoplasmic membranes without gap. found in colon.
What are desmosomes and where are they found?
Two opposing dense plaques of tonofilament bundles that connect two cytoplasmic membranes. found in cells of the skin.
Which tissue type, epithelia or connective, has greater extracellular substance to cells?
connective
Which tissue type, epithelia or connective, has greater cells to extracellular substance?
epithelia
What are the three types of connective tissue proper?
dense regular, dense irregular, and loose
What type of tissue is cartilage and bone?
connective
What type of tissue is adipose?
connective
What are the three types of muscle tissue?
skeletal, cardiac, and smooth.
