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Microanatomy I

mitochondria are self replicating
some cells components that can be identified using the light microscopy nucleolus, cilia, lipid globules
human cells are: eukariotic
all body tissues are derived from cells true
cell membrane is composed of: bilayer of phospholipids and proteins
endoplasmic reticulum may be associated with ribosomes
In an active cell, the nucleolus appears dense and intensely stained
Meiosis results in the formation of three polar bodies and one ovum
Apoptosis part of normal fetal development
Embrionic tissue layers endoderm, mesoderm, ectoderm
process of diferentiation involves cells becoming more specialized in fuction
Mesothelial cells are found: lining the pleural cavity
endothelial cells are found: lining capillaries
Ingestion of foreign bodies is not a fuction of ephitelial cells
Cadherin protein involved and found in cell membranes and associated with cell junctions
Basal lamina structure that separates ephitelial membranes from underlying structures
cilia contain actin filaments attached to cytoskeleton
simple squamous ephitelium presents minimal resistance to passage of nutrients
columnar ephitelial cells are involves in adsoption, may be ciliated, may have a brush border
Goblet cells contain mucopolyssaccharides/glycoprotein complexes
pseudostratified ephitelium is found lining the respiratory tract
stratified squamous ephitelium may be found covering the external os of the uterine cervix
urinary bladder lined by transitional epithelium
diffuse endocrine system contain cells referred as APUD cells
functions of supporting and connective tissue include storage of nutrients, providing a medium for diffusion of nutrients, connection of body parts and organs
fibrillar proteins include collagen,elastin, fibrillin
the parent cell of supporting tissue is mesenchymal cell
endothelial cell is not a supporting cell
describe an active fibroblast spindle shaped, diffuse chromatin, large nucleolus, basophilic cytoplasm
myofibroblast produce type III collagen and reticulin
brown fat is commonly found in embrionic tissues
plasma cells produce immunoglobulins
fenestrations small perforations in elastic tissues
oxytalan and elaunin are immature forms of elastin fibres
loose connective tissue often contain macrophages and mast cells
dense regular connective tissue found in tendons and ligaments
elastic fibres appear yellow in unstained sections
adipocytes have a flattened peripheral nucleous
Mesenchymal tissues contain large amounts of amorphous ground substance
ground substance in umbilical cord is known as Wharton's jelly
fibrocartilage contains large amount of collagen
lamellar bone prduced by osteoblasts
in bone, osteoblast appear as cuboideal cells with large nucleous and basopjilic cytoplasm
skeletal muscle referred sometimes as voluntary muscle
terms "fast twitch" and slow twitch" refer to skeletal muscle fibres
smooth muscle controlled by autonomic nervous system
sarcomere portion of myofibril between adjacent Z bands
skeletal musclecells may be classified as red and white fibres
sarcoplasm contains smooth endoplasmic reticulum and mitochondria
muscle tissue may sustain a state of semicontraction for long periods
in cross section through a cardiac muscle cell nucleous will be centrally located
myoephitelial cells found associated with glands and ducts
Created by: dduque
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