FACTOID # 10: The total number of state executions in 2005 was 60: 19 in Texas and 41 elsewhere. The racial split was 19 Black and 41 White.
 
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Encyclopedia > Organ (anatomy)

In biology, an organ (Latin: organum, "instrument, tool", from Greek όργανον - organon, "organ, instrument, tool") is a group of tissues that perform a specific function or group of functions. Usually there is a main tissue and sporadic tissues. The main tissue is the one that is unique for the specific organ. For example, main tissue in the heart is the myocardium, while sporadic are the nerves, blood, connective etc. Old Pipe organ in Église Saint-Thomas, Strasbourg, France. ... Look up organ in Wiktionary, the free dictionary. ... For other uses, see Biology (disambiguation). ... Latin was the language originally spoken in the region around Rome called Latium. ... Biological tissue is a collection of interconnected cells that perform a similar function within an organism. ... The heart and lungs, from an older edition of Grays Anatomy. ... Myocardium is the muscular tissue of the heart. ... The nervous system of an animal coordinates the activity of the muscles, monitors the organs, constructs and processes input from the senses, and initiates actions. ... For other uses, see Blood (disambiguation). ... Connective tissue is one of the four types of tissue in traditional classifications (the others being epithelial, muscle, and nervous tissue. ...

Contents

Animal organs

Animal organs include the heart, lungs, brain, eye, stomach, spleen, bones, pancreas, kidneys, liver, intestines, skin (the largest human organ), urinary bladder, and the sex organs (uterus in female animals, testicles in male). The internal organs collectively are often called viscera, the plural of the rarely-used term viscus. For other uses, see Animal (disambiguation). ... The heart and lungs, from an older edition of Grays Anatomy. ... For the village in Tibet, see Lung, Tibet. ... For other uses, see Brain (disambiguation). ... For other uses, see Eye (disambiguation). ... In anatomy, the stomach is a bean-shaped hollow muscular organ of the gastrointestinal tract involved in the second phase of digestion, following mastication. ... The spleen is an organ located in the abdomen, where it functions in the destruction of old red blood cells and holding a reservoir of blood. ... This article is about the skeletal organs. ... The pancreas is a gland organ in the digestive and endocrine systems of vertebrates. ... Major function-filter blood. ... The liver is the largest internal organ in the human body, and is an organ present in vertebrates and some other animals. ... In anatomy, the intestine is the segment of the alimentary canal extending from the stomach to the anus and, in humans and other mammals, consists of two segments, the small intestine and the large intestine. ... This article is about the organ. ... This article is about the urinary bladder. ... This article is about female reproductive anatomy. ... Look up testes in Wiktionary, the free dictionary. ... In anatomy, a viscus (plural viscera) is an internal organ of an animal, in particular an internal organ of the thorax or abdomen. ...


Plant organs

Plant organs can be divided into vegetative and reproductive. Vegetative plant organs are root, stem and leaf, while reproductive are flower, seed and fruit. For other uses, see Plant (disambiguation). ... For other uses, see Root (disambiguation). ... Stem showing internode and nodes plus leaf petiole and new stem rising from node. ... Look up foliage in Wiktionary, the free dictionary. ... For other uses, see Flower (disambiguation). ... A ripe red jalapeño cut open to show the seeds For other uses, see Seed (disambiguation). ... For other uses, see Fruit (disambiguation). ...


The vegetative organs are essential for maintaining the life of a plant (they preform the vital functions, such as photosynthesis), while the reproductive organs are essential in reproduction. But, if there is asexual vegetative reproduction, the vegetative organs are those which create the new generation of plants (see clonal colony). Photosynthesis splits water to liberate O2 and fixes CO2 into sugar The leaf is the primary site of photosynthesis in plants. ... Close-up of an Echinopsis spachiana flower, showing both carpels (only the styles and stigmas are visible) and stamens, making it a complete flower. ... Asexual reproduction in liverworts: a caducuous phylloid germinating Asexual reproduction is a form of reproduction which does not involve meiosis, ploidy reduction, or fertilization. ... Production of new individuals along a leaf margin of the air plant, Kalanchoë pinnata. ... A clonal colony is a group of plants (or fungi) that have grown in a given location, all originating vegetatively, not sexually, from a given single ancestor. ...


Organ systems

Main article: Biological system

A group of related organs is an organ system. Organs within a system may be related in any number of ways, but relationships of function are most commonly used. For example the urinary system comprises organs that work together to produce, store, and carry urine. An example of a system: The nervous system. ... The urinary system is the organ system that produces, stores, and eliminates urine. ... This article is about the urine of animals generally. ...


The functions of organ systems often share significant overlap. For instance, the nervous and endocrine system both operate via a shared organ, the hypothalamus. For this reason, the two systems are combined and studied as the neuroendocrine system. The same is true for the musculoskeletal system, which involves the relationship between the muscular and the skeletal system. The nervous system is a highly specialized network whose principal components are nerves called neurons. ... The endocrine system is an integrated system of small organs that involve the release of extracellular signaling molecules known as hormones. ... The hypothalamus links the nervous system to the endocrine system via the pituitary gland (hypophysis). ... Neuroendocrinology is the study of the interactions between the nervous system and the endocrine system. ... The musculoskeletal system (also known as the locomotor system) is an organ system that gives animals the ability to physically move using the muscles and skeletal system. ... The muscular system is the anatomical system of a species that allows it to move. ... Skeleton is also a winter sport: see skeleton (sport). ...


List of major human organ systems

There are typically considered to be eleven major organ systems of the human body.

  • Nervous system - Integration and coordination through electrochemical signals
  • Circulatory system - The transporting of needed materials to the cells and the transporting of wastes away from the cells.

what was here was sick and improperly spelled. ... Skeleton is also a winter sport: see skeleton (sport). ... A scanning electron microscope (SEM) image of a single human lymphocyte. ... The muscular system is the anatomical system of a species that allows it to move. ... For other uses, see Heat (disambiguation) In physics, heat, symbolized by Q, is energy transferred from one body or system to another due to a difference in temperature. ... The nervous system is a highly specialized network whose principal components are nerves called neurons. ... The endocrine system is an integrated system of small organs that involve the release of extracellular signaling molecules known as hormones. ... For other uses, see Hormone (disambiguation). ... The circulatory system or cardiovascular system is the organ system which circulates blood around the body of most animals. ... Among quadrupeds, the respiratory system generally includes tubes, such as the bronchi, used to carry air to the lungs, where gas exchange takes place. ... For transport in plants, see Vascular tissue. ... -1... In zootomy, the integumentary system is the external covering of the body, comprising the skin, hair, scales, nails, sweat glands and their products (sweat and mucus). ... The lymphatic system is a complex network of lymphoid organs, lymph nodes, lymph ducts, lymphatic tissues, lymph capillaries and lymph vessels that produce and transport lymph fluid from tissues to the circulatory system. ... A scanning electron microscope image of a single neutrophil (yellow), engulfing anthrax bacteria (orange). ... The urinary system is the organ system that produces, stores, and eliminates urine. ... Homeostasis (from Greek: ὅμος, homos, equal; and ιστημι, histemi, to stand lit. ... An electrolyte is any substance containing free ions that behaves as an electrically conductive medium. ...

Organs of the human body by region

Head and neck

For other uses, see Brain (disambiguation). ... For an alternative meaning, see ear (botany). ... This article refers to the sight organ. ... For other uses, see Mouth (disambiguation). ... For other uses, see Tongue (disambiguation). ... Types of teeth Molars are used for grinding up foods Carnassials are used for slicing food. ... The mouth, also known as the buccal cavity or the oral cavity, is the opening through which an animal or human takes in food. ... For other uses, see Nose (disambiguation). ... The scalp is the anatomical area bordered by the face anteriorly and the neck to the sides and posteriorly. ... The larynx (plural larynges), colloquially known as the voicebox, is an organ in the neck of mammals involved in protection of the trachea and sound production. ... The pharynx (plural: pharynges) is the part of the neck and throat situated immediately posterior to the mouth and nasal cavity, and cranial, or superior, to the esophagus, larynx, and trachea. ... The salivary glands produce saliva, which keeps the mouth and other parts of the digestive system moist. ... The meninges (singular meninx) are the system of membranes that envelop the central nervous system. ... The four human parathyroid glands are adjacent to the thyroid. ... This article is about the organ. ...

Back

A diagram of a thoracic vertebra. ... The Spinal cord nested in the vertebral column. ... This article is about the bones called ribs. ...

Chest

The heart and lungs, from an older edition of Grays Anatomy. ... For the village in Tibet, see Lung, Tibet. ... Thymus, see Thyme. ...

Abdomen

In higher vertebrates, the peritoneum is the serous membrane that forms the lining of the abdominal cavity - it covers most of the intra-abdominal organs. ... In anatomy, the stomach is a bean-shaped hollow muscular organ of the gastrointestinal tract involved in the second phase of digestion, following mastication. ... In anatomy of the digestive system, the duodenum is a hollow jointed tube about 25-30 cm long connecting the stomach to the jejunum. ... In anatomy, the intestine is the segment of the alimentary canal extending from the stomach to the anus and, in humans and other mammals, consists of two segments, the small intestine and the large intestine. ... It has been suggested that this article or section be merged with Large intestine. ... The liver is the largest internal organ in the human body, and is an organ present in vertebrates and some other animals. ... The spleen is an organ located in the abdomen, where it functions in the destruction of old red blood cells and holding a reservoir of blood. ... The pancreas is a gland organ in the digestive and endocrine systems of vertebrates. ... Major function-filter blood. ... In mammals, the adrenal glands (also known as suprarenal glands) are the triangle-shaped endocrine glands that sit on top of the kidneys; their name indicates that position (ad-, near or at + -renes, kidneys). They are chiefly responsible for regulating the stress response through the synthesis of corticosteroids and catecholamines... In human anatomy, the vermiform appendix (or appendix, pl. ... This article is about the organ. ... The gallbladder (or cholecyst) is a pear-shaped organ that stores bile (or gall) until the body needs it for digestion. ... A bladder is a pouch or other flexible enclosure with waterproof or gasproof walls. ...

Pelvis and perineum

The pelvis (pl. ... For the record label, see Sacrum Torch. ... The coccyx is formed of up to five vertebrae. ... Human female internal reproductive anatomy Ovaries are a part of a female organism that produces eggs. ... The Fallopian tubes, also known as oviducts, uterine tubes, and salpinges (singular salpinx) are two very fine tubes leading from the ovaries of female mammals into the uterus. ... This article is about female reproductive anatomy. ... The vulva (from Latin, vulva, plural vulvae or vulvas; see etymology) is the region of the external genital organs of the female, including the labia majora, mons pubis, labia minora, clitoris, bulb of the vestibule, vestibule of the vagina, greater and lesser vestibular glands, and vaginal orifice. ... The clitoris is a sexual organ that is present only in female mammals. ... In human anatomy, the perineum, also called the taint, or gooch, is generally defined as the surface region in both males and females between the pubic symphysis and the coccyx. ... This article is about the urinary bladder. ... Human male anatomy The testicles, known medically as testes (singular testis), are the male generative glands in animals. ... The rectum (from the Latin rectum intestinum, meaning straight intestine) is the final straight portion of the large intestine in some mammals, and the gut in others, terminating in the anus. ... The penis (plural penises, penes) is an external male sexual organ. ...

Upper limbs/Lower limbs

For other uses of Muscle, see Muscle (disambiguation). ... Front view of a skeleton of an adult human Back view of a skeleton of an adult human The human skeleton consists of both fused and individual bones supported and supplemented by ligaments, tendons, muscles and cartilage. ... A nerve is an enclosed, cable-like bundle of nerve fibers or axons, which includes the glia that ensheath the axons in myelin. ... For other uses, see Hand (disambiguation). ... For the municipality in Germany, see Wrist, Germany. ... Elbow redirects here. ... This article is about the body part. ... For other uses of the term, see hip (disambiguation). ... For other uses, see Knee (disambiguation). ... For a review of anatomical terms, see Anatomical position and Anatomical terms of location. ... For other uses, see Foot (disambiguation). ...

See also

Fascia is specialized connective tissue layer which surrounds muscles, bones, and joints, providing support and protection and giving structure to the body. ... Transplant redirects here. ... In cell biology, an organelle is a specialized subunit within a cell that has a specific function, and is separately enclosed within its own lipid membrane. ... Drawing of the structure of cork as it appeared under the microscope to Robert Hooke from Micrographia which is the origin of the word cell being used to describe the smallest unit of a living organism Cells in culture, stained for keratin (red) and DNA (green) The cell is the... List of bones of the human skeleton Human anatomy is primarily the scientific study of the morphology of the adult human body. ... For transport in plants, see Vascular tissue. ... what was here was sick and improperly spelled. ... The endocrine system is an integrated system of small organs that involve the release of extracellular signaling molecules known as hormones. ... A scanning electron microscope image of a single neutrophil (yellow), engulfing anthrax bacteria (orange). ... In zootomy, the integumentary system is the external covering of the body, comprising the skin, hair, scales, nails, sweat glands and their products (sweat and mucus). ... The lymphatic system is a complex network of lymphoid organs, lymph nodes, lymph ducts, lymphatic tissues, lymph capillaries and lymph vessels that produce and transport lymph fluid from tissues to the circulatory system. ... The muscular system is the anatomical system of a species that allows it to move. ... The nervous system is a highly specialized network whose principal components are nerves called neurons. ... -1... Among quadrupeds, the respiratory system generally includes tubes, such as the bronchi, used to carry air to the lungs, where gas exchange takes place. ... Front view of a skeleton of an adult human Back view of a skeleton of an adult human The human skeleton consists of both fused and individual bones supported and supplemented by ligaments, tendons, muscles and cartilage. ... The urinary system is the organ system that produces, stores, and eliminates urine. ... This article is about matter in physics and chemistry. ... Domains and Kingdoms Nanobes Acytota Cytota Bacteria Neomura Archaea Eukaryota Bikonta Apusozoa Rhizaria Excavata Archaeplastida Rhodophyta Glaucophyta Plantae Heterokontophyta Haptophyta Cryptophyta Alveolata Unikonta Amoebozoa Opisthokonta Choanozoa Fungi Animalia An ericoid mycorrhizal fungus Life on Earth redirects here. ... An example of a system: The nervous system. ... Biological tissue is a group of cells that perform a similar function. ... Drawing of the structure of cork as it appeared under the microscope to Robert Hooke from Micrographia which is the origin of the word cell being used to describe the smallest unit of a living organism Cells in culture, stained for keratin (red) and DNA (green) The cell is the... In cell biology, an organelle is a specialized subunit within a cell that has a specific function, and is separately enclosed within its own lipid membrane. ... 3D (left and center) and 2D (right) representations of the terpenoid molecule atisane. ... For other uses, see Atom (disambiguation). ... Helium atom (schematic) Showing two protons (red), two neutrons (green) and two electrons (yellow). ... Elementary particles An elementary particle is a particle with no measurable internal structure, that is, it is not a composite of other particles. ... For the novel, see The Elementary Particles. ...

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Tongue (anatomy) - MSN Encarta (369 words)
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Tongue anatomy, muscular organ in the mouth, the primary organ of taste and important in the formation of speech and in the chewing and swallowing.
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