Term
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Definition
Selective
Amphipathic
Fluid
Possibly the brain of the cell |
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Term
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Definition
Euchromatin-Loose DNA
Heterochromatin-Dense DNA |
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Term
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Definition
Makes new membrane,hormones, stores ions
makes proteins to be secreted |
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Term
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Definition
-All proteins start on a free ribosome
-Ribosomes do not have a membrane
-They are made in the nucleolus |
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Term
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Definition
| Include: lysosomes, peroxisomes(free radical defense), vacuoles |
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Term
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Definition
| 3 Main varieties: microtubule, intermediate filament, microfilament |
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Term
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Definition
| largest, hollow tube, polymer, originates in MTOC, stabalized by MAPs, has motor proteins |
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Term
| Intermediate Filament(IF) |
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Definition
IF- purely structural, doesn't move
Over 50 types
Cell specific |
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Term
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Definition
smallest
actin arrayed in parallel fashion,
for motility
pinocytosis/phagocytosis
anchoring |
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Term
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Definition
Takes 5 hours
Triggered by bicarbonate in vagina
Increases sperm metabolism/motility |
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Term
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Definition
Corona Radiata- "sticky cells", granulosa cells in hyaluronic acid
Zona Pellucida- composed of glycoproteins
Egg plasma membrane |
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Term
| Capacitated Sperm heads have: |
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Definition
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Term
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Definition
Sperm rxn that happens at egg. Glycoproteins match up with egg.
-Release of enzymes to break through corona radiata |
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Term
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Definition
| Cortical granules release their contents outside the egg. |
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Term
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Definition
4 cell stage- embryonic genome turned on
16 cell stage-Morula |
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Term
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Definition
Outer cells flatten, tight junctions form-->placenta
Inner cells form gap junctions-->fetus |
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Term
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Definition
| Fertilization, cleavage, compaction, implantation(day 7) |
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Term
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Definition
-Depends on compaction
-Allows fluid between inner cells
-Results: Inner Cell Mass, Blastocoel, trophoblast |
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Term
| Week 2 After Fertilization |
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Definition
Trophoblast Splits-forms chorion(placenta)
-Cytotrophoblast-inner layer
-Syncytiotrophoblast- outer layer, buries into
uterus
Inner Cell Mass splits
-epiblast-amnion-->exercise/cushion for fetus
-hypoblast-yolk sac-->blood/gut formation, umbilicus |
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Term
| Week 3 After Fertilization |
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Definition
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Term
| How do cells know to move? |
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Definition
| Due to chemoattraction and chemorepulsion |
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Term
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Definition
Filters between epithelial and CT
Controls cell growth, metabolism and differentiation |
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Term
| 2 Derived components of Basement Membrane |
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Definition
Epithelial-basal lamina
CT-lamina fibroretiularis
Possible 3rd layer- lamina lucida |
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Term
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Definition
Protects, Absorbs, Secretes, Transports, Contracts, Filters, Sensory
Pretty abs seek turkey cubes for sandwiches. |
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Term
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Definition
Increase absorption 30 fold
May be part or product of cell
Enclosed in cytoplasm |
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Term
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Definition
Made of 10 doublets of microtubules w/ 1 in the center
Arise from centriole and basal body
Dynein and ATP used to cause motion
Contained within membrane. |
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Term
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Definition
| Sugar coating used for recognition, adhesion, absorption, and protection |
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Term
| General Epithelial attachments |
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Definition
Lateral-Cadherin based
Basal-Integrin Based
Zonula-Band
Macula- A spot |
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Term
|
Definition
&-Most apical
-Tetraspanins make sealing strands- occludin claudins |
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Term
| Adherens Junctions include |
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Definition
Zonula Adherens, Desmosomes, Hemidesmosomes
3 parts-transmembrane proteins, anchoring proteins, and cytoskeleton. |
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Term
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Definition
Needed for all other junctions to form
Transmembrane cadherins bind to actin |
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Term
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Definition
Also called desmosomes
Anchoring proteins attach to Intermediate filaments. |
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Term
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Definition
Channel called Conexon
Made by 6 connexins. |
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Term
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Definition
Can happen in 4-5 days(gut) or 28 days(skin)
Keratinocytes immediately fill in the gap. |
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Term
| Epithelial Mesenchyme Transitions(EMTs) |
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Definition
Cells diminish E-cadherin expression, protrude out of epithelium and break down cell junctions.
-Then the cell becomes mesenchymal and differentiates.
An example is gastrulation |
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Term
| How to tell the difference between secretory cells: |
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Definition
| It's all about the organelle content and expansion. |
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Term
|
Definition
-Well developed rER.
-Highly Polar: basal rEr and apical secretory granules |
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Term
|
Definition
Well developed basal rEr and supranuclear Golgi
Lots of mucin filled vesicles |
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Term
|
Definition
-Hydrophillic
-GAGs are repeating disaccharides(up to 40)
-100s of GAGs per mucin
-Becomes mucus when full of water
-85% Carb |
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Term
| Lipid(steroid) secreting Cells |
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Definition
-Well developed sEr
-Free lipid vavuoles
-Lots of mitochondria w/tubular cristae |
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Term
| Ion and water transport secretion |
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Definition
-Folded membrane
-Lots of mitochondria at folds
-tight junctions between cells |
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Term
Mucous Secretions
Serous Secretions |
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Definition
Mucous: viscous, slimy, glycosylated. ie goblet cells
Serous: watery, poorly or non glycosylated. ie sweat glands |
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Term
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Definition
-Hemotoxylin & Eosin(H&E)- Most common, nuclei/ribos/rER blue, cytoplasm/proteins pink
-Diff-Quick-Stains blood cells
-Orcein-Resourcein- elastic fibers black, nuclei gray
-Silver Stain-Neurons black
-Supravital-Stains reticulocytes, chromatin dark |
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Term
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Definition
| Two or more different tissues that have a certain function and shape |
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Term
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Definition
Aided by enzyme in trophoblast
Also aided by uterine secretions |
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