Preview 13/14 Flashcards
What makes up connective tissue in general terms?
Cells
Abundant extra-cellular matrix
What is the ECM made of?
Fibers and ground substance
What are the three major classifications of connective tissue?
Embryonic
Connective tissue proper
Special (blood, cartilage, bone)
Describe the two types of embryonic CT and how to recognize them.
Mesenchyme: lots of cells, almost no fibers visible, lots of ground substance, does contain reticular fibers (type III collagen fibrils), euchromatic nuclei, cytoplasmic processes
Mucous: in umbilical chord, called Wharton’s Jelly, fewer cells, dark nuclei, plenty of ground substance, visible fibers
What are the classifications of connective tissues proper?
Loose (areola)
Dense irregular and regular
Reticular
What connective tissue is found in the dermis and capsules of organs and joints?
Dense Irregular connective tissue
What CT is found in tendons?
Dense regular CT
What CT is primarily found beneath epithelium and contains lots of microvasculature to support the epithelium?
Loose (areolar) CT
What kinds of CT have lots of cells?
Mesenchyme
Loose
Reticular
Where is reticular CT found?
liver, spleen, bone marrow, lymph, endocrine glands
any organ with lots of microvasculature
What CT has box-car nuclei?
Dense regular
Which CTs have fewer cells?
Both kinds of dense
Mucous
Which CT has a woven mat look?
Loose
What are the major differences between the two types of dense CT?
scattered nuclei vs box-car
multidirectional vs unidirectional collagen bundles
Describe all the types of adipose tissue.
White: unilocular, large round cells, look white, store fat for energy, found throughout the body
Brown: mostly in infants neck back and shoulders, in adults found around organs, multilocular, smaller cells than white fat, look vacuolated, used for heat generation
