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BI 455 Week 1
histological technique, the cell, epithelial tissue
95
Histology
Intermediate
04/25/2016

Additional Histology Flashcards

 


 

Cards

Term
Small pieces of tissue are placed in solutions of chemicals that preserve by cross-linking proteins and inactivating degradative enzymes
Definition
Fixation
Term
Tissue is transferred through a series of increasingly concentrated alcohol solutions, ending in 100%, which removes all water
Definition
Dehydration
Term
Alcohol is removed in toluene or other agents in which both alcohol and paraffin are miscible
Definition
Clearing
Term
Tissues is placed in melted paraffin until it becomes completely infiltrated with this substance
Definition
Infiltration
Term
Paraffin-infiltrated tissue is placed in small mold with melted paraffin and allowed to harden
Definition
Embedding
Term
Stain that produces dark blue or purple color, staining DNA in the cell nucleus and other acidic structures (eg. RNA-rich portions of cytoplasm and matrix of cartilage)
Definition
Hematoxylin stain
Term
Stain produces pink color, staining other cytoplasmic components and collagen
Definition
Eosin stain
Term
Stain based on transformation of 1,2-glycol groups present in sugars into aldehyde residues
Definition
PAS stain
Term
Stain that reacts to produce purple or magenta color
Definition
PAS stain
Term
Stain that stains carbohydrates and carbohydrate-rich macromolecules well
Definition
PAS stain
Term
Stain that allows for intense contrast of glycosylated molecules
Definition
PAS stain
Term
Localization of cellular structures using specific enzymatic activity present in those structures
Definition
Enzyme histochemistry
Term
Name and Order: [1] Section put in contact w/ marker that reacts w/ product of enzyme [2] Product color or e- density causes contrast between enzymatically active and inactive areas [3] Enzyme is allowed to act on substrate [4] Tissue sections are immersed in solution with substrate of enzyme to localize
Definition
Enzyme histochemistry: 4, 3, 1, 2
Term
Uses specific rxns btwn antigen and antibody to visualize proteins by labelling w/ visible markers
Definition
Immunohistochemistry
Term
Technique involving fluorescent compounds, peroxidase for light microscopy or gold for TEM
Definition
Immunohistochemistry
Term
TYpes of immunohistochemistry
Definition
[1] Direct immunohistochemistry
[2] Indirect immunohistochemistry
Term
Benefit of indirect immunohistochemistry?
Definition
More than 1 labelled secondary antibody can bind to each primary antibody --> protein is amplified
Term
Microscopic technique: stain preparations are examined as ordinary light passes thru
Definition
Bright field
Term
Microscopic technique: uses differences in refractive index of components to produce an image w/o staining, allowing observation of living cells
Definition
Phase contrast
Term
Microscopic technique: involves scanning specimen at successive focal planes w/ focused light beam (laser), producing a 3D reconstruction from images
Definition
Confocal
Term
Microscopic technique: uses UV light, allowing localization of probes which can be much more specific than routine stains
Definition
Fluorescent
Term
Microscopic technique: Scans e- beam across specimen coated w/ thin layer of heavy metal. Reflected and secondary e-s from specimen are produced into 3D ultrastructural image
Definition
Scanning Electron Microscopy (SEM)
Term
Microscopic technique: sends electromagnetically focused beam of e-s at very high voltage thru ultra-thin sections of tissues. Involves heavy metal ions that associate at different e- densities w/ components, improving contrast
Definition
Transmission Electron Microscopy (TEM)
Term
[image]
Definition
bright field microscopy (H&E stain)
Term
[image]
Definition
Confocal microscopy
Term
[image]
Definition
phase contrast microscopy
Term
[image]
Definition
fluorescent microscopy
Term
[image]
Definition
transmission electron microscopy (TEM)
Term
[image]
Definition
scanning electron microscopy
Term
Functions of nucleus
Definition
house DNA
Term
Functions of nucleolus
Definition
ribosome synthesis
Term
Functions of plasma membrane
Definition
-physical barrier to enclose cell contents
-regulates material in and out of cell
-provides/maintains electrical gradient
-functions in cell communication
Term
Functions of rER
Definition
-modifies, transports, stores proteins produced by its ribosomes
Term
Fate of proteins from rER
Definition
-secreted out of cell
-become part of PM
-become enzymes of lysosomes
Term
Functions of sER
Definition
-synthesizes, transports, stores lipids (eg. steroids)
-metabolizes carbs
-detoxifies
-forms vesicles and peroxisomes
Term
Functions of golgi apparatus
Definition
-modifies, packages, sorts materials arriving from ER in transport vesicles
-forms secretory vesicles and lysosomes
Term
Functions of secretory vesicles
Definition
exocytosis (transport cellular material outside the cell)
Term
Functions of mitochondria
Definition
synthesize most ATP during respiration
Term
Functions of endosomes
Definition
sort proteins delivered to them via endocytotic vesicles and redirects them to different cell components (final destination)
Term
Functions of lysosomes
Definition
digests microbes or materials of cell
Term
Functions of peroxisomes
Definition
-detoxifies specific harmful substances (produced by cell or taken in)
-engages in beta oxidation of fatty acids to acetyl CoA
Term
Functions of cytoskeletal elements
Definition
-maintain intracellular structure, support, and organization
-participates in cell division
-facilitates movement
Term
Functions of ribosomes
Definition
-protein synthesis
-free ribosomes: produce proteins used within cell/cytoplasm
Term
aggregates of stored glucose
Definition
glycogen
Term
lipid accumulation/storage
Definition
lipid droplets
Term
Name the mitotic phase: nucleolus disappears. Chromosomes condense. 2 MTOCs (centrosomes) have moved apart and each is associated w/ microtubules forming mitotic spindle.
Definition
Prophase
Term
Name the mitotic phase: chromosomes attach to mitotic spindle microtubules at kinetochores and begin to be moved
Definition
Prometaphase
Term
Name the mitotic phase: Chromosomes align at equator
Definition
Metaphase
Term
Name the mitotic phase: sister chromatids separate and move toward opposite spindle poles
Definition
Anaphase
Term
Name the mitotic phase: 2 separate sets of daughter chromosomes arrive at spindle poles and start to decondense, nuclear envelope forms
Definition
Telophase
Term
Name the mitotic phase: contractile ring produces cleavage furrow until cytoplasmic division
Definition
Cytokinesis
Term
[image]
Definition
Prophase
Term
[image]
Definition
prometaphase
Term
[image]
Definition
Metaphase
Term
[image]
Definition
Anaphase
Term
[image]
Definition
Telophase
Term
[image]
Definition
Cytokinesis
Term
List events in apoptosis
Definition
DNA fragmentation, decrease of cell volume, membrane blebbing, formation of apoptotic bodies
Term
[image]
Definition
skeletal muscle
Term
[image]
Definition
skeletal muscle
Term
[image]
Definition
skeletal muscle
Term
[image]
Definition
skeletal muscle
Term
[image]
Definition
skeletal muscle
Term
[image]
Definition
skeletal muscle
Term
[image]
Definition
skeletal muscle
Term
[image]
Definition
skeletal muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
cardiac muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle (cs and ls)
Term
[image]
Definition
smooth and skeletal muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
muscle tissues
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle
Term
[image]
Definition
smooth muscle
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