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RUSVM- Microanatomy (mine) > Cells, Methods Of Histology > Flashcards

Cells, Methods Of Histology Flashcards

1
Q

Nucleus

A 
Contains genetic information
In eukaryotic separated from cytoplasm
Chromatin is basophilic
Nuclear envelop connected to RER
Nuclear pores allow passage of RNA, proteins into cytoplasm
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2
Q

Nucleolus

A

Dense structure in nucleus

mediates transport between nucleus and cytoplasm

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3
Q

Rough ER

A

segregate proteins not meant for cytoplasm (attached)
glycosylation of glycoprotiens
synthesis of phospholipids
assembly of multichain proteins
contain polyribosomes
modification and folding of proteins synthesized on ribosomes

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4
Q

Smooth ER

A

synthesis of some lipids- lipid biosynthesis
continuous with RER
detoxification
sequestration of calcium ions

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5
Q

microvilli

A

seen on EM
absorptive
form a brush/striated border

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6
Q

tight junction

A

prevents leakage of material

joins two neighboring cells

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7
Q

Chromatin

A

basophilic
packaged in coils
DNA with protiens

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8
Q

Nuclear Envelope

A

separates ad mediates transport between nucleus and cytoplasm

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9
Q

Mitochondria

A 
energy production (ATP)
self replicating circular DNA
double membrane with cristae protruding inward
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10
Q

Cilia (kinocilia)

A

motile projections

come from basal bodies

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11
Q

Gap junction

A

important for communication

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12
Q

Euchromatin

A

active chromatin

pale in microscope

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13
Q

Ribosomes

A

Protein synthesis

form peptide bonds to make polypeptide chains

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14
Q

Golgi Apparatus

A

UPS Center
final assembly and glycosylation of proteins
sorting packaging and delivery

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15
Q

Desmosomes

A

form cell to cell anchoring contacts

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16
Q

Heterochromatin

A

inactive

appears dark on slide

17
Q

Lysosomes

A

contain hydrolytic enzymes
associated with phagocytosis, pinocytosis
involved in intracellular digestion
kill pathogenic organisms and degrades waste products

18
Q

Hemidesmosome

A

basil surface of epithelial cells

19
Q

Plasma Membrane

A

communication- receptors that recognize and respond to signals
intercelluar connection- flexible boundary, protects cellular contents, supports cell structure
physical barrier= phospholipid bilayer
selective permeability- regulates entry and exit of ions, nutrients and waste molecules

20
Q

Proteasomes

A

small enzymatic complexes for intracellular digestion

21
Q

Peroxisomes

A

enzyme catalase which can degrade intracellular hydrogen peroxide

22
Q

Stereocilia

A

nonmotile projections, absorptive

RUSVM- Microanatomy (mine) (4 decks)

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