ASL STEM

Villus Sign Video

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Definition

A small fingerlike process on the wall of the small intestine that increases the surface area for absorption of digested nutrients. Also one of the branching, vascular processes on the embryonic portion of the placenta.

Source: Hickman, C.P., et al. 2011. Integrated Principles of Zoology. Fifteenth Edition. McGraw-Hill Higher Education.

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> Villus

+ Character Displacement

+ Hybridization *

+ Exponential Growth

+ Directional Selection

+ Transcription

+ Genetic Code *

+ Primary Structure

+ Polymorphism *

+ Semelparity *

+ Sexual Selection

+ Survivorship *

+ Asymmetric Competition

+ Chemoautotroph

+ Dominance Hierarchy

+ Density Independent

+ Evolutionary Stable Strategy

+ Limiting Resource

+ Iteroparity *

+ Inclusive Fitness

+ Photosynthesis

+ Parthenogenesis *

+ Photoautotroph *

+ Preadaptation *

+ Thermocline *

+ Activation Energy

+ Covalent Bond

+ Incomplete Dominance

+ Barrier Reef *

+ Chloroplast *

+ Biogeochemical Cycle

+ Intertidal Zone *

+ Plate Tectonics *

+ Phylogenetic Tree

+ Trophic Level

+ Nitrogen Fixation

+ Primary Producer

+ Fermentation *

+ Messenger Rna (M Rna)

+ Recombinant Dna

+ Metamorphosis

+ Cyanobacteria

+ Mitochondrion

+ Hypertrophy *

+ Acetylcholinesterase *

+ Appendicular *

+ Endocytosis *

+ Hypothalamus *

+ Pericardium *

+ Phagocytosis *

+ Tropomyosin *

+ Vocal Cords *

+ Accessory (Coreceptor) Molecule *

+ Abyssal Plain *

+ Acanthodians *

+ Accessory (Branchial) Heart *

+ Accessory Organ *

+ Acclimatization *

+ Definitive Host *

+ Delayed Type Hypersensitivity *

+ Osmoregulation *

+ Anthracosaurs *

+ Aboral Sense Organ

+ Amniotic Egg *

+ Amphiblastula *

+ Amphiphilic *

+ Anisogametes *

+ Actinotroch *

+ Actomyosin System *

+ Acrocentric *

+ Action Potential

+ Acetyl Coenzyme A *

+ Adaptive Zone

+ Adaptive Radiation

+ Active Transport

+ Adenosine Phosphate *

+ Adhesive Sac *

+ Age Structure

+ Agonistic Behavior

+ Alcoholic Fermentation *

+ Aldosterone *

+ Alimentary Canal *

+ Allelic Frequency *

+ Antennal Gland *

+ Alternative Pathway *

+ Altruistic Behavior *

+ Ameboid Movement *

+ Ameiotic Parthenogenesis *

+ Anaphylaxis *

+ Anastomosis *

+ Androgenic Gland *

+ Angiotensin *

+ Antigenic Determinant *

+ Antigen Presenting Cell *

+ Antimicrobial Peptides *

+ Apical Complex *

+ Archaeocytes *

+ Archenteron *

+ Archinephros *

+ Arginine Phosphate *

+ Aristotle's Latern *

+ Atherosclerosis *

+ Auricularia *

+ Autotrophic Nutrition *

+ Avicularium *

+ Basis, Basipodite *

+ Batesian Mimicry *

+ Bathypelagic *

+ Behavioral Syndrome *

+ Behavioral Ecology *

+ Biological Species Concept *

+ Binary Fission

+ Bohr Effect *

+ Brachiation *

+ Brachiolaria *

+ Brown Bodies *

+ Calciferous Glands *

+ Catadromous *

+ Catastrophic Species Selection *

+ Catch Collagen *

+ Cell Mediated Immune Response *

+ Center Of Origin *

+ Centrolecithal *

+ Cephalization *

+ Cephalothorax *

+ Chlorocruorin *

+ Chlorogogen Cells *

+ Choanoblast *

+ Choanoflagellate *

+ Cholinergic *

+ Chorioallantoic Membrane *

+ Chorioallantoic Placenta *

+ Coelenteron *

+ Chorionic Villi *

+ Choriovitelline Placenta *

+ Chromatophore

+ Intercellular *

+ Coelomocyte *

+ Coelomoduct *

+ Coenecium, Coenoecium *

+ Coenenchyme *

+ Cohesion Species Concept *

+ Collar Cells *

+ Collar Bodies *

+ Collenchyme *

+ Common Descent *

+ Comparative Biochemistry *

+ Comparative Cytology *

+ Comparative Morphology *

+ Comparative Psychology *

+ Conditional Specification *

+ Conspecific *

+ Continental Margin *

+ Coxa, Coxopodite *

+ Complementary *

+ Contractile Vacuole *

+ Complementary Dna (C Dna)

+ Competition *

+ Competitive Exclusion *

+ Conus Arteriosus *

+ Cooperative Behavior *

+ Coralline Algae *

+ Corpora Allata *

+ Corpora Cardiaca *

+ Cosmopolitan *

+ Creatine Phosphate *

+ Cretaceous Extinction *

+ Ctenoid Scales *

+ Cutaneous Respiration *

+ Cuvierian Tubules *

+ Cycloid Scales *

+ Cydippid Larva *

+ Cysticercoid *

+ Cytokinesis *

+ Cytopharynx *

+ Cytoplasmic Specification *

+ Cytotoxic T Cells *

+ Dactylozooid *

+ Dendritic Cell *

+ Density Dependent *

+ Deoxyribose *

+ Depolarization *

+ Derived Character State *

+ Dermal Ostia *

+ Deposit Feeders

+ Deuterostomia *

+ Disaccharides *

+ Discoidal Cleavage *

+ Disruptive Selection *

+ Digitigrade *

+ Diphycercal *

+ Diploblastic *

+ Direct Development *

+ Disjunct Distribution *

+ Dna Barcoding

+ Dual Gland Adhesive Organs *

+ Down Syndrome

+ Ecdysiotropin *

+ Ecdysozoan Protostome *

+ Ecological Community *

+ Ecological Pyramid *

+ Ectognathous *

+ Ectolecithal *

+ Ectoparasite *

+ Effect Macroevolution *

+ Elephantiasis *

+ Eltonian Pyramid *

+ Embryogenesis *

+ Endochondral *

+ Endognathous *

+ Endolecithal *

+ Endometrium *

+ Endoparasite *

+ Endopod, Endopodite *

+ Endopterygote *

+ Endothelium *

+ Energy Budget *

+ Endosymbiosis

+ Endoplasmic Reticulum (Er)

+ Epigenetics *

+ Epipod, Epipodite *

+ Erythroblastosis Fetalis *

+ Erythrocyte *

+ Spongioblast *

+ Estrous Cycle *

+ Euchromatin *

+ Euryphagous *

+ Evagination *

+ Evolutionary Duration *

+ Evolutionary Sciences *

+ Exopterygote *

+ Evolutionary Species Concept *

+ Evolutionary Taxonomy *

+ Evolvability *

+ Excision Repair *

+ Exopod, Exopodite *

+ Experimental Method *

+ Experimental Sciences *

+ Exteroceptor *

+ Extrinsic Factor *

+ Female Defense Polygyny *

+ Filter Feeding *

+ Food Vacuole *

+ Foraminiferan *

+ Free Living *

+ Fringing Reef *

+ Frontal Plane *

+ Fundamental Niche *

+ Gametic Meiosis *

+ Ganoid Scales *

+ Gap Junction *

+ Gastroderrnis *

+ Gastrovascular Cavity *

+ Gastrozooid *

+ Gastrulation *

+ Gated Channels *

+ General Area Cladogram *

+ Genetic Drift *

+ Growth Rate *

+ Geographic Range *

+ Germinal Vesicle *

+ Germinative Zone *

+ Germovitellarium *

+ Golgi Complex *

+ Hyperparasitism *

+ Isolecithal *

+ Gluconeogenesis

+ Gnathostomes *

+ Gross Productivity *

+ Ground Substance *

+ Group Selection *

+ Gynandromorph *

+ Granular Glands *

+ Granulocytes *

+ Green Gland *

+ Gynecophoric Canal *

+ Habitat Fragmentation *

+ Habituation *

+ Haplodiploidy *

+ Hectocotylus *

+ Hemal System *

+ Hemerythrin *

+ Hemidesmosome *

+ Hemimetabolous *

+ Hermaphrodite *

+ Heterocercal *

+ Heterochromatin *

+ Heterochrony *

+ Heterolobosea *

+ Heterostracans *

+ Hierarchical System *

+ High Heat Of Vaporization *

+ High Specific Heat Capacity *

+ High Surface Tension *

+ Histogenesis *

+ Holoblastic Cleavage *

+ Holometabolous *

+ Holophytic Nutrition *

+ Holozoic Nutrition *

+ Hydatid Cyst *

+ Hydrocaulus *

+ Hydrocorals *

+ Homeothermic *

+ Homolog, Homologue *

+ Hyperpolarization *

+ Humoral Immune Response *

+ Hydrogenosome *

+ Hydrostatic Pressure *

+ Hydrostatic Skeleton *

+ Hydrothermal Vent *

+ Hyomandibular *

+ Hyperosmotic *

+ Hypoosmotic *

+ Hypothetico Deductive Method *

+ Ichthyosaur *

+ Immediate Hypersensitivity *

+ Immunoglobulin *

+ Interbreeding Population *

+ Indeterminate Cleavage *

+ Indirect Development *

+ Infraciliature *

+ Infundibulum *

+ Inheritance Of Acq Character *

+ Interferons *

+ Intermediate Filaments *

+ Interleukin *

+ Interleukin 1 *

+ Interleukin 2 *

+ Intermediary Meiosis *

+ Intermediate Host *

+ Internal Nostrils *

+ Interstitial *

+ Intracellular *

+ Invagination *

+ Intrinsic Growth Rate *

+ Keystone Species *

+ Kinetochore *

+ Kinetodesma *

+ Kinetoplast *

+ Kin Selection *

+ Jacobson's Organ *

+ Juxtaglomerular Apparatus *

+ Kelp Forest *

+ Kupffer Cells *

+ Kwashiorkor *

+ Labyrinthodont *

+ Lachrymal Glands *

+ Lacunar System *

+ Lateral Line System

+ Law Of Independent Assortment *

+ Microgamete *

+ Law Of Segregation *

+ Lecithotrophy *

+ Leishmaniasis *

+ Lepidosaurs *

+ Lepospondyls *

+ Leptocephalus *

+ Linkage, Linked *

+ Lipid, Lipoid *

+ Lissamphibia *

+ Lithosphere *

+ Lophotrochozoan Protostome *

+ Low Viscosity *

+ Microevolution *

+ Macroevolution *

+ Male Dominance Polygyny *

+ Melanophore *

+ Membranelle *

+ Membrane Potential *

+ Mesopelagic *

+ Metacentric *

+ Metacercaria *

+ Macrogamete *

+ Macronucleus *

+ Madreporite *

+ Malpighian Tubules *

+ Mangrove Community *

+ Mass Extinction *

+ Mehlis' Gland *

+ Memory Cells *

+ Menstruation *

+ Meroblastic *

+ Mesolecithal *

+ Mesonephros *

+ Metanephridium *

+ Metanephros *

+ Metapopulation Dynamics *

+ Microglial Cells *

+ Microfilament *

+ Microfilariae *

+ Mineralocorticoids *

+ Micronucleus *

+ Microsporidian *

+ Mixed Temperate Forest *

+ Monohybrid Cross *

+ Multiple Fission *

+ Mononuclear Phagocyte System *

+ Monosaccharide *

+ Monosomy, Monosomic *

+ Morphogenesis *

+ Morphogenetic Determinant *

+ Mosaic Development *

+ Mullerian Mimicry *

+ Mulller's Larva *

+ Multiplication Of Species *

+ Mushroom Bodies *

+ Nephrostome *

+ Natural Killer Cells *

+ Neo Darwinism *

+ Neoplastic Growth *

+ Neopterygian *

+ Nephridiopore *

+ Nested Hierarchy *

+ Neural Crest *

+ Neural Spine *

+ Neuropodium *

+ Neurosecretory Cell *

+ Niche Overlap *

+ Nictitating Membrane *

+ Nitrogenous Base *

+ Net Productivity *

+ Nondisjunction *

+ Nucleoplasm *

+ Plasmalemma *

+ Nuptial Flight *

+ Nucleic Acid *

+ Nucleoprotein *

+ Nurse Cells *

+ Odontophore *

+ Olfactory Epithelium *

+ Oncomiracidium *

+ Opisthaptor *

+ Opisthokont *

+ Opisthonephros *

+ Opisthosoma *

+ Opsonization *

+ Orthogenesis *

+ Osteostracans *

+ Ostracoderm *

+ Outgroup Comparison *

+ Osmotic Pressure *

+ Ovoviviparity *

+ Oxidative (Aerobic) Metabolism *

+ Oxidative Phosphorylation *

+ P53 Protein *

+ Paedomorphosis *

+ Parabasal Bodies *

+ Parabasalid *

+ Parabronchi *

+ Paramylon Granules *

+ Parapatric Speciation *

+ Pedal Laceration *

+ Parasympathetic *

+ Parenchymula *

+ Particulate Inheritance *

+ Pedicellaria *

+ Pentamerous Symmetry *

+ Peptide Bond *

+ Perennibranchiate *

+ Periostracum *

+ Pentadactyl *

+ Perissodactyl *

+ Peristomium *

+ Permian Extinction *

+ Perpetual Change *

+ P H (Potential Of Hydrogen) *

+ Phenetic Taxonomy *

+ Phyllopodium *

+ Phenotypic Gradualism *

+ Phosphate Group *

+ Phototrophs *

+ Phyletic Gradualism *

+ Phylogenetic Species Concept *

+ Phosphorylation *

+ Polyphyletic *

+ Phytoflagellates *

+ Phytophagous *

+ Pinocytosis *

+ Placentotrophy *

+ Placoid Scale *

+ Plantigrade *

+ Plasma Cell *

+ Plasma Membrane *

+ Pleiotropy, Pleiotropic *

+ Plesiomorphic *

+ Pneumatophore *

+ Pneumostome *

+ Polarization *

+ Polian Vesicles *

+ Polyembryony *

+ Polymerase Chain Reaction

+ Polygenic Inheritance *

+ Poikilothermic *

+ Polymerization *

+ Polynucleotide *

+ Polypeptide *

+ Polyphyodont *

+ Polysaccharide *

+ Polysome (Polyribosome) *

+ Polytene Chromosomes *

+ Populational Gradualism *

+ Portal System *

+ Positive Assortative Mating *

+ Preformation *

+ Premunition *

+ Primary Bilateral Symmetry *

+ Primary Heterotroph *

+ Prebiotic Synthesis *

+ Predaceous, Predacious *

+ Primary Organizer *

+ Primary Radial Symmetry *

+ Progesterone *

+ Proprioceptor *

+ Prostaglandins *

+ Protein Polymorphism *

+ Prothoracic Glands *

+ Protandrous *

+ Pseudocoelom *

+ Pseudocoelomate *

+ Pseudopodium *

+ Punctuated Equilibrium *

+ Quaternary Structure *

+ Radial Canals *

+ Proventriculus *

+ Radial Cleavage *

+ Radial Symmetry *

+ Radiolarian *

+ Prothoracicotropic Hormone *

+ Prothrombin *

+ Protocooperation *

+ Protonephridium *

+ Protopod, Protopodite *

+ Protostomia *

+ Reciprocal Altruism *

+ Regulative Development *

+ Reproductive Barrier *

+ Restriction Endonuclease *

+ Rheoreceptor *

+ Ras Protein *

+ Realized Niche *

+ Receptor Mediated Endocytosis *

+ Relative Fitness *

+ Reproductive Community *

+ Repugnatorial Glands *

+ Resource Defense Polygyny *

+ Rete Mirabile *

+ Reticuloendothelial System *

+ Reticulopodia *

+ Retortamonad *

+ Ribosomal Rna (R Rna) *

+ Ritualization *

+ Rna Polymerase *

+ Rhipidistian *

+ Rhynchocoel *

+ Ribonucleic Acid (Rna) *

+ Rotational Cleavage *

+ Round Dance *

+ Saprophagous *

+ Saprozoic Nutrition *

+ Saturated Fatty Acid *

+ Sauropterygians *

+ Scleroblast *

+ Sclerotization *

+ Scyphistoma *

+ Siphonoglyph *

+ Schistosomiasis *

+ Schizocoelous Mesoderm Formation *

+ Scientific Revolution *

+ Sea Grass Bed *

+ Secondary Induction *

+ Secondary Structure *

+ Segment Polarity Genes *

+ Selectively Permeable *

+ Seminiferous Tubules *

+ Semipermeable *

+ Sensitization *

+ Septal Filament *

+ Sequential Hermaphrodite *

+ Set (Of Chromosomes) *

+ Sociobiology *

+ Sibling Species *

+ Sickle Cell Anemia *

+ Sign Stimulus *

+ Sinoatrial Node (Sa) *

+ Sister Group *

+ Smallest Distinct Groupings *

+ Socially Coordinated Behavior *

+ Somatoplasm *

+ Southern Evergreen Forests *

+ Source Deme *

+ Species Diversity *

+ Species Epithet *

+ Species Selection *

+ Spemann Organizer *

+ Spermatheca *

+ Spermatocyte *

+ Spermatogenesis *

+ Spermatogonium *

+ Spermatophore *

+ Spiral Cleavage *

+ Spiral Valve *

+ Superficial Cleavage *

+ Squamous Epithelium *

+ Stabilizing Selection *

+ Stenohaline *

+ Stenophagous *

+ Stereogastrula *

+ Stereotyped Behavior *

+ Stramenopile *

+ Strobilation *

+ Structural Gene *

+ Suspension Feeder *

+ Swim Bladder *

+ Sympatric Speciation *

+ Symplesiomorphy *

+ Zoecium, Zooecium *

+ Synapomorphy *

+ Synaptonemal Complex *

+ Syncytial Specification *

+ Systematics *

+ Systematization *

+ Taxonomic Rank *

+ T Cell Receptors *

+ Tectorial Membrane *

+ Telencephalon *

+ Telocentric *

+ Tagmatization *

+ Telolecithal *

+ Temnospondyls *

+ Temporary Land Bridge *

+ Tentaculocyst *

+ Tertiary Structure *

+ Tiedemann's Bodies *

+ Tight Junction *

+ Trophoblast *

+ Toll Like Receptors (Tl Rs) *

+ Xanthophore *

+ Tympanic Membrance *

+ Trabecular Reticulum *

+ Tracheal System *

+ Transcription Factor *

+ Trans Regulatory *

+ Trophallaxis *

+ Tumor Necrosis Factor *

+ Type Specimen *

+ Transformational Theory *

+ Transporter *

+ Transverse Plane *

+ Trichinosis *

+ Triglyceride *

+ Triploblastic *

+ Ultimate Cause *

+ Trochophore *

+ Trophozoite *

+ Tube Feet (Podia) *

+ Tumor Suppressor Gene *

+ Undulating Membrane *

+ Uniformitarianism *

+ Variational Theory Of Evolution *

+ Typological Species Concept *

+ Unique Density Behavior *

+ Unsaturated Fatty Acid *

+ Vegetal Pole *

+ Vitelline Membrane *

+ Waggle Dance *

+ Vicariance Biogeography *

+ Vicariant Speciation *

+ Water Vascular System *

+ Zooflagellates *

+ Zooxanthella *

+ Amphipathic *

+ Recapitulation *

+ Biogenetic Law *

+ Blepharoplast *

+ Caecum, Cecum *

+ Zygotic Meiosis *

+ Facilitated Diffusion *

+ Facilitated Transport *

+ Proximate Cause *

+ Immediate Cause *

+ Intermediate Inheritance *

+ Major Histocompatibility Complex *

+ Microvillus *

+ Morphological Species Concept *

+ Juvenile Hormone *

+ Phylogenetic Systematics *

+ Proto Oncogene *

+ Quantitative Inheritance *

+ Vitelline Gland *

+ Sex Chromosomes

+ 3' End (Three Prime End)

+ Carrying Capacity

+ Chromosomal Theory

+ Biradial Symmetry

+ Bilateral Cleavage

+ Determinate Cleavage

+ Adhesion Junction

+ Crossing Over

+ Binomial Nomenclature

+ Average Effect

+ Climax Community

+ Double Circulation

+ Eukaryote, Eukaryotic

+ Prokaryote, Prokaryotic

+ Allopatric Speciation

+ Disulfide Bond

+ Cis Regulation

+ Condensation Reaction

+ Deoxyribonucleic Acid (Dna)

+ Homeotic Genes *

+ 1,25 Dihydroxyvitamin D3

+ Carbohydrates

+ Transfer Rna (T Rna)

+ Hardy Weinberg Equilibrium

+ Hydrogen Bond

+ Vegetal Plate *

+ Irritability *

+ Commensalism *

+ Synchronous Hermaphrodite *

* video needed

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