Vertebrates in Biological Definition
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Vertebrates in Biological Definition
... , and similar mollusks ), and craniates ( vertebrates and their cousins). The brains of arthropods ... brain is protected by the bones of the skull . vertebrates are characterized by increasing complexity in ... as allocortex (Martin, 1996). More complex vertebrates like mammals have developed six-layered ...
... 5.2 How osmoregulation is achieved in vertebrates 6 References Examples of ... cloacas. How osmoregulation is achieved in vertebrates Four processes occur: filtration - fluid ... bladder and exits via the urethra; in other vertebrates the urine mixes with other wastes in the cloaca ...
... Similarly, the traditional Invertebrates are paraphyletic because vertebrates are excluded, although the latter evolved from an Invertebrate. A group ... for classifying earlier sections of the tree - for instance, the early vertebrates that would someday evolve into the family Hominidae can not be placed in ...
... that gave a good field of view despite the rigid lens . In most vertebrates and some mollusks (such as octopuses ) the eye works by projecting ... acuity than humans), and the different forms of eye in, for example, vertebrates and mollusks are often cited as examples of parallel evolution . ...
... It may be broken down into the adaptive immune system (only found in vertebrates [1] ), composed of four lymphoid organs ( thymus , lymph nodes , spleen ... involved in each, despite the clear difference in operation. Higher vertebrates and all mammals have both an innate and an adaptive immune system. ...
... system and interfacing to the circulatory system of air-breathing vertebrates . Its function is to exchange oxygen from air with carbon dioxide from ... outer skin of their bodies. Evolutionary origins The lungs of vertebrates are closely related (i.e. homologous ) to the gas bladders of fish ...
... dissolved in air (or, by animals that breathe water, in water). In vertebrates smells are sensed by the olfactory epithelium located in the nose and ... in emotion and place memory, respectively. To detect pheromones many vertebrates have an auxiliary olfactory sense organ called vomeronasal organ , ...
... agamospermy ), invertebrates (e.g. water fleas , aphids ) and some vertebrates (e.g. lizards , salamanders , some fish , and even turkeys ). ... M. & Bogart, James P. (1989). Evolution and Ecology of Unisexual vertebrates . Albany, New York: New York State Museum. ISBN 1555571794 . ...
... 2 Types of thermoregulation 3 Physiological temperature regulation in vertebrates 3.1 Ectotherms 3.2 Endotherms 3.2.1 Heat production in ... to cool yourself down. Physiological temperature regulation in vertebrates By numerous observations upon men and animals, John Hunter showed that ...
... The former are radially symmetric and exclusively marine, such as sea stars , sea urchins , and sea cucumbers . The latter are dominated by the vertebrates , animals with backbones. These include fish , amphibians , reptiles , birds , and mammals . In addition to these, the deuterostomes also ...
... nerve , which run from the base of the spine to the big toe of each foot. These single-cell fibers may extend a metre or even longer. In vertebrates generally, the axons of many neurons are sheathed in myelin , which is formed by either of two types of glial cells : Schwann cells ensheathing ...
... for respiratory pigment (bright green, blue, or orange). In many invertebrates, these oxygen-carrying proteins are freely soluble in the blood; in vertebrates they are contained in specialized red blood cells , allowing for a higher concentration of respiratory pigments without increasing viscosity or ...
... cell size control are currently being investigated. The size of post-mitotic neurons depends on the size of the cell body, axon and dendrites. In vertebrates , neuron size is often a reflection of the number of synaptic contacts onto the neuron or from a neuron onto other cells. For example, the size of ...
... have been made since Cuvier's statement (though less than 50 in number). It's been argued that the chances of uncovering large, previously unknown vertebrates are very slender when compared to uncovering unknown invertebrates. It is the commitment to spectacular animals (mostly vertebrates) that makes ...
... at the multicellular , cellular , and sub-cellular levels. Digestion usually involves mechanical manipulation and chemical action. In most vertebrates , digestion is a multi-stage process in the digestive system , following ingestion of the raw materials, most often other organisms. The process ...
... cotyledons . Once the embryo begins to germinate — grow out from the seed — it is called a seedling . Animals : The embryo of vertebrates is defined as the stages between the first division of the zygote (a fertilized ovum ) until it becomes a foetus . An embryo is called a ...
... could refer to: In plants , the outermost layer of cells covering the leaves and young parts of a plant is the epidermis . In vertebrates , epidermis is the outermost layer of the skin . In invertebrates , the outermost layer of cells of the organism. Etymology : 17th ...
... is the Greek word herpeton which means "to creep". Herpetology deals with what are called the cold-blooded tetrapods , that is, those land vertebrates which are ectothermic (deriving their body temperature from their environment) rather than endothermic (deriving their body heat from an ...
... genes can lead to the growth of extra, typically non-functional body parts in invertebrates , but usually results in spontaneous abortion in vertebrates . Pit-1 homeobox-containing protein bound to DNA The homeobox genes were first found in the fruit fly Drosophila melanogaster ...
... fish ( Chondrichthyes ) such as sharks and rays , and the jawless fish ( Agnatha ). Since there are as many species of fish as all other vertebrates put together, and they have been evolving for a very long time, there is a bewildering variety; while most species have probably been found and ...
... Kidneys viewed from behind with spine removed The kidneys are bean -shaped excretory organs in vertebrates . Part of the urinary system , the kidneys filter wastes (especially urea ) from the blood and excrete them, along with water , as urine . The ...
... The liver is an organ in vertebrates including humans. It plays a major role in metabolism and has a number of functions in the body including detoxification, glycogen storage and ...
... The former are radially symmetric and exclusively marine, such as sea stars , sea urchins , and sea cucumbers . The latter are dominated by the vertebrates , animals with backbones. These include fish , amphibians , reptiles , birds , and mammals . In addition to these, the deuterostomes also ...
... represents about 1% of their mass. This can be rapidly converted to glucose when more energy is necessary. Nervous control Efferent leg vertebrates move muscles in response to voluntary and autonomic signals from the brain . Deep muscles, superficial muscles, muscles of the face and internal ...
... Neurons (also spelled neurones or called nerve cells ) are the primary cells of the nervous system . In vertebrates , they are found in the brain , the spinal cord and in the nerves and ganglia of the peripheral nervous system . Contents ...
... Many of the older classifications contain paraphyletic groups, especially the traditional 2-6 kingdom systems and the classic division of the vertebrates . For example, the class Reptilia as traditionally defined is paraphyletic because that class does not include two groups of its descendants, ...
... mode of life is the most common on the planet, with representatives from all major taxa , from the simplest unicellular organisms to complex vertebrates . Every free-living species has its own unique species of parasite, so the number of parasitic species greatly exceeds the number of free living ...
... often favors traits that reduce the survival of organisms. Thus, sex is highly inefficient. One possible explanation for the fact that nearly all vertebrates are sexual is that sex increases the rate at which adaptation can occur. This is for two reasons. First, if an advantageous mutation occurs in ...
... Large external skeletal systems support proportionally less weight than endoskeletons of the same size, and thus many larger animals, such as the vertebrates , have internal skeletal systems. Examples of exoskeletons are found in arthropods and shellfish : the skeleton forms a hard shell -like ...
... particularly when one of the subpopulations is small (a scenario that leads to the " founder effect "). This kind of speciation is evident in many vertebrates ' taxa . See also the issue of Ring species . Another proposed mechanism of speciation is sympatry , by which new species emerge alongside the ...
... 5.2 How osmoregulation is achieved in vertebrates 6 References Examples of ... cloacas. How osmoregulation is achieved in vertebrates Four processes occur: filtration - fluid ... bladder and exits via the urethra; in other vertebrates the urine mixes with other wastes in the cloaca ...
... Similarly, the traditional Invertebrates are paraphyletic because vertebrates are excluded, although the latter evolved from an Invertebrate. A group ... for classifying earlier sections of the tree - for instance, the early vertebrates that would someday evolve into the family Hominidae can not be placed in ...
... that gave a good field of view despite the rigid lens . In most vertebrates and some mollusks (such as octopuses ) the eye works by projecting ... acuity than humans), and the different forms of eye in, for example, vertebrates and mollusks are often cited as examples of parallel evolution . ...
... It may be broken down into the adaptive immune system (only found in vertebrates [1] ), composed of four lymphoid organs ( thymus , lymph nodes , spleen ... involved in each, despite the clear difference in operation. Higher vertebrates and all mammals have both an innate and an adaptive immune system. ...
... system and interfacing to the circulatory system of air-breathing vertebrates . Its function is to exchange oxygen from air with carbon dioxide from ... outer skin of their bodies. Evolutionary origins The lungs of vertebrates are closely related (i.e. homologous ) to the gas bladders of fish ...
Major histocompatibility complex
... ( MHC ) is a large genomic region or gene family found in most vertebrates containing many genes with important immune system roles. In humans ... and allelic diversity MHC gene families are found in essentially all vertebrates , though the gene composition and genomic arrangement varies widely. ...... dissolved in air (or, by animals that breathe water, in water). In vertebrates smells are sensed by the olfactory epithelium located in the nose and ... in emotion and place memory, respectively. To detect pheromones many vertebrates have an auxiliary olfactory sense organ called vomeronasal organ , ...
... agamospermy ), invertebrates (e.g. water fleas , aphids ) and some vertebrates (e.g. lizards , salamanders , some fish , and even turkeys ). ... M. & Bogart, James P. (1989). Evolution and Ecology of Unisexual vertebrates . Albany, New York: New York State Museum. ISBN 1555571794 . ...
... 2 Types of thermoregulation 3 Physiological temperature regulation in vertebrates 3.1 Ectotherms 3.2 Endotherms 3.2.1 Heat production in ... to cool yourself down. Physiological temperature regulation in vertebrates By numerous observations upon men and animals, John Hunter showed that ...
... The former are radially symmetric and exclusively marine, such as sea stars , sea urchins , and sea cucumbers . The latter are dominated by the vertebrates , animals with backbones. These include fish , amphibians , reptiles , birds , and mammals . In addition to these, the deuterostomes also ...
... nerve , which run from the base of the spine to the big toe of each foot. These single-cell fibers may extend a metre or even longer. In vertebrates generally, the axons of many neurons are sheathed in myelin , which is formed by either of two types of glial cells : Schwann cells ensheathing ...
... for respiratory pigment (bright green, blue, or orange). In many invertebrates, these oxygen-carrying proteins are freely soluble in the blood; in vertebrates they are contained in specialized red blood cells , allowing for a higher concentration of respiratory pigments without increasing viscosity or ...
... cell size control are currently being investigated. The size of post-mitotic neurons depends on the size of the cell body, axon and dendrites. In vertebrates , neuron size is often a reflection of the number of synaptic contacts onto the neuron or from a neuron onto other cells. For example, the size of ...
... have been made since Cuvier's statement (though less than 50 in number). It's been argued that the chances of uncovering large, previously unknown vertebrates are very slender when compared to uncovering unknown invertebrates. It is the commitment to spectacular animals (mostly vertebrates) that makes ...
... at the multicellular , cellular , and sub-cellular levels. Digestion usually involves mechanical manipulation and chemical action. In most vertebrates , digestion is a multi-stage process in the digestive system , following ingestion of the raw materials, most often other organisms. The process ...
... cotyledons . Once the embryo begins to germinate — grow out from the seed — it is called a seedling . Animals : The embryo of vertebrates is defined as the stages between the first division of the zygote (a fertilized ovum ) until it becomes a foetus . An embryo is called a ...
... could refer to: In plants , the outermost layer of cells covering the leaves and young parts of a plant is the epidermis . In vertebrates , epidermis is the outermost layer of the skin . In invertebrates , the outermost layer of cells of the organism. Etymology : 17th ...
Evolutionary developmental biology
... of the genetic network, as distinct from the functioning of the individual genes in the network The discovery of the homeotic Hox gene family in vertebrates in the 1980s , allowed researchers in developmental biology to empirically assess the relative roles of the above two factors, with respect to ...... is the Greek word herpeton which means "to creep". Herpetology deals with what are called the cold-blooded tetrapods , that is, those land vertebrates which are ectothermic (deriving their body temperature from their environment) rather than endothermic (deriving their body heat from an ...
... genes can lead to the growth of extra, typically non-functional body parts in invertebrates , but usually results in spontaneous abortion in vertebrates . Pit-1 homeobox-containing protein bound to DNA The homeobox genes were first found in the fruit fly Drosophila melanogaster ...
... fish ( Chondrichthyes ) such as sharks and rays , and the jawless fish ( Agnatha ). Since there are as many species of fish as all other vertebrates put together, and they have been evolving for a very long time, there is a bewildering variety; while most species have probably been found and ...
... Kidneys viewed from behind with spine removed The kidneys are bean -shaped excretory organs in vertebrates . Part of the urinary system , the kidneys filter wastes (especially urea ) from the blood and excrete them, along with water , as urine . The ...
... The liver is an organ in vertebrates including humans. It plays a major role in metabolism and has a number of functions in the body including detoxification, glycogen storage and ...
... The former are radially symmetric and exclusively marine, such as sea stars , sea urchins , and sea cucumbers . The latter are dominated by the vertebrates , animals with backbones. These include fish , amphibians , reptiles , birds , and mammals . In addition to these, the deuterostomes also ...
... represents about 1% of their mass. This can be rapidly converted to glucose when more energy is necessary. Nervous control Efferent leg vertebrates move muscles in response to voluntary and autonomic signals from the brain . Deep muscles, superficial muscles, muscles of the face and internal ...
... Neurons (also spelled neurones or called nerve cells ) are the primary cells of the nervous system . In vertebrates , they are found in the brain , the spinal cord and in the nerves and ganglia of the peripheral nervous system . Contents ...
... Many of the older classifications contain paraphyletic groups, especially the traditional 2-6 kingdom systems and the classic division of the vertebrates . For example, the class Reptilia as traditionally defined is paraphyletic because that class does not include two groups of its descendants, ...
... mode of life is the most common on the planet, with representatives from all major taxa , from the simplest unicellular organisms to complex vertebrates . Every free-living species has its own unique species of parasite, so the number of parasitic species greatly exceeds the number of free living ...
... often favors traits that reduce the survival of organisms. Thus, sex is highly inefficient. One possible explanation for the fact that nearly all vertebrates are sexual is that sex increases the rate at which adaptation can occur. This is for two reasons. First, if an advantageous mutation occurs in ...
... Large external skeletal systems support proportionally less weight than endoskeletons of the same size, and thus many larger animals, such as the vertebrates , have internal skeletal systems. Examples of exoskeletons are found in arthropods and shellfish : the skeleton forms a hard shell -like ...
... particularly when one of the subpopulations is small (a scenario that leads to the " founder effect "). This kind of speciation is evident in many vertebrates ' taxa . See also the issue of Ring species . Another proposed mechanism of speciation is sympatry , by which new species emerge alongside the ...
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(Date:11/25/2009)...ss increase blood pressure? This simple question ...ars. New Stress-related gene Modulates High Blood...od pressure? This simple question has been the fo...esearch has for the first time established a link ...ssure response to stress in mice as well as humans...
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