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60 Cards in this Set
- Front
- Back
- 3rd side (hint)
What’s reception? |
The binding of chemical signal to receptior |
Binding |
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What’s transduction ? |
The conversion of chemical signal to intracellular changes |
Trigger |
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How many types of cellular communication are there? |
Direct contact , synaptic signaling, paracrine signaling and endocrine signaling |
Contacts and signaling |
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Briefly explain direct contact of cells |
Signal on the cell surface recognised by adjacent cell |
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Briefly explain synaptic signalling |
Nerve cells release neurotransmitter which binds to receptors in nearby cell |
Neurons |
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Briefly explain paracrine signalling |
The signal released can affect neighbouring cells |
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Briefly explain endocrine signalling |
Hormones released affect other cells throughout the body |
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How many types of cell junctions are there ? |
4: Desmosome, gap junction, tight junction, adherens junction |
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Explain desmosome |
Present in skin and urinary bladder, have protein fibers extend from cell surface across the cell to hold adjacent cell |
Protein fibers |
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Explain Tight junction |
Impermeable junction , protein molecules on cells fused with adjacent cell, block the flow of in and out of cell |
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Gap junction |
Have channel between the cells to allow the passage of molecules and ions -heart and smooth muscle |
Channel |
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Explain adherens junction |
Cadherin projected from Catenin( attached to actin filament) to attach with adjacent cell -cardiac muscle and smooth muscle |
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Roles of membrane receptors |
Contact signalling(cells recognize one another) , chemical signalling (different cells response to same ligand) |
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Explain what is 2nd msg |
Short lived intracellular signalling molecule Non protein substance |
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What is cyclic AMP |
-Made from ATP by Adenylyl Cyclase -termination of signalling happens when the cAMP is converted to AMP by phosphodiesterase |
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What is cyclic GMP |
-made from GTP by Guanylyl Cyclase -activates cGMP-dependent protein kinase (protein kinase G) |
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What is DAG(diacylglycerol)and IP3(inositol triphosphate) |
The result of hydrolyse PIP2 by Phospholipase C -IP3 will trigger Ca2+ releasing -DAG will activate protein kinase C |
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How Ca2+ enter cell |
Receptor activation: receptor binds with ligand, open Ca2+ channel. And the release of Ca2+ trigger by IP3 Voltage gated Ca2+ channel open |
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Which type of ligand use intracellular receptor and and which type of ligand use extra cellular receptor |
Extracellular receptor: non lipid soluble ligand (hydrophilic) Intracellular receptor: lipid soluble ligand (Hydrophobic) |
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What response does intracellular receptors cause? |
Direct gene activation |
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Does epithelial tissue contain blood vessels? How about nerve? |
Got nerve but no vessels |
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Does epithelial tissue contain blood vessels? How about nerve? |
Got nerve but no vessels |
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What is transition epithelium |
A Type of epithelium that can stretch |
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Pseudostratified columnar epithelium, explain the arrangement what’s |
Looks like multilayer but actually one , as all the cells can touch the basal membrane |
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What’s on the lateral(side) surface of epithelium? |
Adhesion protein and cell junctions |
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Basal surface of epithelium contains |
Basal lamina non cellular sheet of protein + reticular fibers to form basement membrane |
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what’s on the apical surface of an epithelial cells |
Microvilli , cilia and flagellum |
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What is the polarity of a epithelial cells? |
Have two ends: apical and basal |
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List the 3 shapes of epithelial tissue |
Squamous , cuboidal and columnar |
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List the 3 types of thickness of epithelial cells |
Simple, stratified and pseudostratified |
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Function of simple squamous cells and the location |
Filtration and diffusion, alveoli and blood vessels |
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Functions of simple cuboidal cell and the location |
Absorption and secretion, ovary and kidney tubules |
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Function of simple columnar cell and the location |
Absorption, secretion and protection, uterus, stomach and intestine |
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Functions of stratified squamous epithelium cells and the two types of it |
Protection. Non kerotinized (oesophagus) and kerotinized (skin) |
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Stratified cuboidal epithelium , functions |
Protection |
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Stratified columnar epithelium. Functions |
Protection |
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What’s glandular epithelium |
Epithelium that specialised for production and secretion of substances |
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What’s glandular epithelium |
Epithelium that specialised for production and secretion of substances |
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What are the two types of gland that based on different number of secreting cell |
Unicellular and multicellular |
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What are the natures of secretion |
Serous- watery Mucous- slimly Mixed- mix of watery and slimly |
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What are the mechanisms of secretion? |
Merocrine - cell remain intact Apocrine - the top portion of cell is pinched off with the mucus Holocrine - whole cell detached along with mucus |
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What are the shapes of secreting units |
Tubular , acinar and tubular alveolar |
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What are the arrangement of a duct system |
Simple gland , branched gland and compound gland |
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What derm does connective tissue arise from |
Mesoderm |
Starts with M |
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Mesenchyme cells differentiate to form which 4 types of stem cells |
Fibroblast (to fibrocyte), chondroblast (to Chondrocyte), osteoblast (to osteocyte), and hematopoietic stem cells |
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What cells contribute to connective tissue proper, cartilages and bone |
Connective tissue proper = fibrocyte Cartilages = chondrocytes Bone = osteocyte |
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Function of connective tissue ? |
Protection, support, cushion of organs, insulation of heat and food stores, immune function |
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Composition of ground substance |
Interstitial fluid, adhesion protein, proteoglycan |
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3 types of connective tissue fibers |
Elastic (long and thin), collagen (thin and tough), reticular (branched) |
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What derm does connective tissue arise from |
Mesoderm |
Starts with M |
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2 types of bone |
Compact bone and spongy bone |
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Mesenchyme cells differentiate to form which 4 types of stem cells |
Fibroblast (to fibrocyte), chondroblast (to Chondrocyte), osteoblast (to osteocyte), and hematopoietic stem cells |
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What cells contribute to connective tissue proper, cartilages and bone |
Connective tissue proper = fibrocyte Cartilages = chondrocytes Bone = osteocyte |
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Function of connective tissue ? |
Protection, support, cushion of organs, insulation of heat and food stores, immune function |
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Composition of ground substance |
Interstitial fluid, adhesion protein, proteoglycan |
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3 types of connective tissue fibers |
Elastic (long and thin), collagen (thin and tough), reticular (branched) |
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What fibers are present in connective tissue proper :loose, areolar and adipose? |
All 3 types of fibers |
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What are the fibers that present in connective tissue proper: loose, reticular what |
Reticular connective proteins |
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What are the fibers and cell that present in connective tissue proper: dense regular and irregular 3 t |
Collagen (arranged neatly in dense regular but arranged randomly in dense irregular), major cells is fibroblast |
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3 types of cartilage and the order of them in flexibility |
Elastic —> hyaline —> fibro |
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