A&P CH#3 PPT

• It is the external environment for most cells. What is this?

  Extracellular environment
• It is a structure with discrete boundaries that performs a specific function. What is this?

  Organ
• ECM is consist of what?

  Proteoglycans, Fibrous Proteins, and water
• ECM can be what?

  Fluid, mineralized, and negligible
• What is the functional type of simple squamous?

  Exchange epithelia
• what is the special featur of Exchange epithelia?

  Leaky in capillaies (few tight junctions)
• What is the functional type of simple cuboidal or columnar, adn Apical microvili (sometimes)?

  Transport epithelia
• what is the structure of exchange epithelia?

  Simple squamous
• what is the structure of transport epithelia?

  Simple cuboidal or columnar, and apical microvilli (cometimes)
• What are the special features of transport epithelia?

  Selective (aided by tight junctions) and Active transport (requires many mitochondria Basolateral membrane)
• What is the funtional type of simple or pseudostratified columnar?

  cilliated epithelia
• what is the structure of cilliated epithelia?

  simple or pseudostratified columnar
• what is the special feature of ciliated epithelia?

  motile cilia
• what is the structure of protective epithelia?

  Stratified squamous
• whjat is the functional type of stratified squamous?

  Protective epithelia
• what is the special feature of protective epithelia?

  may be keratinized
• location of protective epithelia?

  Skin (keratinized)

  Digestive tract and reproductive part “vagina” (nonkeratinized)
• what is the structure of secretory epithelia?

  simple columnar
• what is the functional type of simple columnar?

  transport and secretory epithelia
• special features of secretory epithelia?

  extensive rough ER and Golgi
• It may be unicellular. What functional type of epithelia is this?

  Secretory
• What type of ground substance is present in the matrix?

  Proteoglycans
• what fibers are present in the matrix?

  collagen and elastin
• what are the 3 different types of flexible support and line joints in the CARTILAGE?

  Hyaline, Elastic, and Fibro
• Stem cells, Totipotent is for what?

  Zygote
• Stem cells, Pluripotent is for?

  Embryonic
• Stem cells, Multipotent is for?

  Adult
• Apoptosis is used for what?

  Turn over old or uneeded cells
• “Death of cell”. What is this?

  Necrosis
• It is a goup of tissues that perform related function. What is this?

  Organs
• what is the total weight of the integument (skin)?

  around 10lbs.
• What are the roles of the integument (skin)?

  Protection (barrier, melanin, coordination with immune system)
• What are the roles of the integument (yung iba pa)?

  Excretion, maintenance of body’s temperature

  vitamin D3 synthesis

  lipid storage

  general sensation
• What produces keratin?

  Keratinocytes
• what produces melanin?

  Melanocytes
• what produces keratinocytes?

  Basal stem cells
• where are the melanocytes located?

  stratum basale
• Vesicles travels to where?

  Keratinocytes
• What ere the 2 layers found in the Dermis?

  Papillary and Reticular layer
• What is a Papillary layer?

  superficial areolar tissue supports the epidermis