sgu vet histo 1 set 3

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what are the types of cytoplasmic inclusions (5)
- glycogen
- lipid
- melanin
- hemosiderin
- lipofuscin
what is stored food or stored material called in a cell

cytoplasmic inclusions
glycogen, lipid, melanin, hemosiderin, and lipofuscin make up what in the cell

cytoplasmic inclusions: stored food/material
what is in liver and muscle cells tha can be demonstrated by PAS reaction

glycogen
what cells is glycogen found in (2)
- liver cells
- muscle cells
how can glycogen be demonstrated

PAS reaction
what is in adipose cells that can be demonstrated with osmic acid fixation

lipid
what cells are lipids found

adipose cells
what do use to demonstrate lipids

osmic acid fixation
where is melanin found (2)
- skin
- pigment epithelium of the retina
what cytoplasmic inclusion is found in skin and pigment epithelium of the retina

melanin
what is a result of hemoglobin degradation

hemosiderin
what is hemosiderin a result of

hemoglobin degradation
what is the indigestible residue of phagocytosis, commonly found in cardiac muslce, liver and nerve cells

lipofuscin
what pigment increases with age

lipofucin
where is lipofuscin commonly found (3)
- cardiac muscle
- liver
- nerve cells
what is the indigestible part of phagocytosis

lipofucin
what is lipofucin composed of

the indigestible part after phagocytosis
what are the different types of intercellular junctions (3 main, 3 sub)
- tight junction
- adhering (anchoring) junctions
- ->zonula adherens
- ->desmosomes or macula adherens
- ->hemidesmosomes
- communication (gap) junction
where are tight junctions found

inbetween epithelial cells
what type of junction is found inbetween epithelial cells

tight junctions
what is the structure of tight junctions
- irregularly anastamosing ridges of transmembrane protein
- (anastamosing = vein like network)
what has an anstamosing ridge of transmembrane protein struture

tight junctions
what is the function of tight junctions

a barrier to prevent passage of water soluble molecules from the lumen to intercellular space and vice versa and can sometimes be selectively permeable
what has the function of being a barrier to prevent passage of water soluble moeclues fromt he lumen to the intercellular space and vice bersa

tight junctions
what seals neighbouring cells together in a beltlike fashion

tight junctions
what cells and organ do you see tight junctions (2)
- epithelial cells
- GI tract
what can be found in between epithelial cells in the GI tract

tight junctions
what are the irregularly anastamosing ridges made of in tight junctions

transmembrane protein
what is made with transmembrane protein that's irregularly anastamosing ridges between cells

tight junctions
what are the 3 types of adhering or anchoring junctions (3)
- zonula adherens
- desmosomes or macula adherens
- hemidesmosomes
what holds together cells by a transmembrane protein linker and a bundle of actin filaments running parallel to the junctional cell membrane

zonula adherens
what type of adherens are prominent in the lining cells of the intestine

zonula adherens
how do zonula adherens hold cells together

by transmembrane protein linker and a bundle of actin filaments run parallel to the junctional cell membrane
where are zonula adherens prominent in

the lining cells of the intestine
what is a transmembrane protein linker plus intercellular electron-dense plaque called

desmosomes or macula adherens
what do intermediate filaments attach to to form a hairpin loop on a intercellular electron-dense plaque

desmosomes or macula adherens
what is a macula adherens

another name for desmosomes
what are the components of zonula adherens (2)
- transmembrane protein
- actin filaments
what are the components of macula or desmosomes adherens (3)
- transmembrane protein
- electron-dense plaque
- intermediate filaments
hemidesmosomes connect what to what (2)
- cells
- basement membrane
what type adherance connect a cell to the basement membrane

hemidesmosomes
what permit the direct passage of inorganic ions and other water-soluble molecules from cell to cell

gap junctions (communicating junction)
what is a gap junctions function in a cell

permits the direct passage of inorganic ions and other water-soluble molecules from cell to cell
what has the intercellular space bridged by interlocking transmembrane proteins from cell to cell

gap junctions
what is the structure of gap junctions

interlocking transmembrane proteins between cells
what has considerable functional importance

gap junctions
what are the key differences between a desmosome and a hemidesmosomes (2)
- desmosome connects cell to cell and have 2 electron dense plaque
- hemidesmosome connects cell to basement membrane and has only 1 electron dense plaque
what are the 2 layers of the basement membrane that a hemidesmosome connects to (2)
- basal lamina
- reticular lamina
- both together make up the basement membrane
what are the 4 types of specializations of the free cell surface (4)
- cilia
- flagellum
- microvilli
- stereocilia
where are cilia found (2)
- respiratory
- male/female repro systems (movement of mucus or spermatozoa or oocytes)
what type of specialized free cell surface does the respiratory system have

cilia
what is surrounded by plasma membrane and is composed of 9 doublet microtubules around 2 central microtubules

cilia
what is the components of a cilia (2)
- surrounded by plasma membrane
- 9 doublet microtubules around 2 central ones.
where is the basal body located in a ciliated cell

at the base resembling centrioles
what are the key differences between cilia/flagellum and microvilli/stereocilia (2)
- cilia/flagellum are motile and microvilli/stereocilia are not
- cilia/flagellum have microtubules while microvilli/stereocilia do not
what is a flagellum

a single long cilium
what is a single long cilium

flagellum
where is an example of a flagellum

spermatozoon
a sperm's tail is an example of what

flagellum
what are cytoplasmic evaginations to increase the free surface for absorption

microvilli
what is the structure of microvilli

cytoplasmic evagination
what is the function of microvilli

increase the free surface area for absorption
where can you find microvilli

small intestine
what is another name for microvilli

brush border
what is a brush border

microvilli
what type of specialized free cell surface feature is found in the small intestine

microvilli
what are long rigid microvilli

stereocilia
what is the structure of stereocilia

long rigid version of microvilli
where are stereocilia found

hair cells of the spiral organ (corti) of the inner ear
what specialized free cell surface are found in the inner ear

stereocilia

Author

onaktan

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Card Set

sgu vet histo 1 set 3

Description

cytoplasmic inclusions, intercellular junctions, specializations of free cell surface

Updated

2010-02-07T23:19:02Z

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