This article is about the biological unit. For the musical instrument, see Organ (music). - For other uses, see Organ (disambiguation)
In biology, an organ (Latin: organum, "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 nervous, blood, connective etc. Organ in Katharinenkirche, Frankfurt am Main, Germany The organ is a keyboard instrument played using one or more manuals and a pedalboard. ...
Look up organ in Wiktionary, the free dictionary. ...
For the song by Girls Aloud see Biology (song) Biology studies the variety of life (clockwise from top-left) E. coli, tree fern, gazelle, Goliath beetle Biology (from Greek: βίος, bio, life; and λόγος, logos, speech lit. ...
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. ...
Human blood smear: a - erythrocytes; b - neutrophil; c - eosinophil; d - lymphocyte. ...
Connective tissue is one of the four types of tissue in traditional classifications (the others being epithelial, muscle, and nervous tissue. ...
[edit] Animal organs Common animal (including human) organs include the heart, lungs, brain, eye, stomach, spleen, bones, pancreas, kidneys, liver, intestines, skin (the largest human organ), uterus, and bladder. Animal organs inside the body are often referred to as internal organs. The internal organs collectively are often called viscera, the plural of the rarely-used term viscus. For other uses, see Animal (disambiguation). ...
This article is about modern humans. ...
The heart and lungs, from an older edition of Grays Anatomy. ...
Human respiratory system The lungs flank the heart and great vessels in the chest cavity. ...
The human brain In animals, the brain (enkephalos) (Greek for in the skull), is the control center of the central nervous system, responsible for behavior. ...
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. ...
The kidneys are the organs that filter wastes (such as urea) from the blood and excrete them, along with water, as urine. ...
For the bird, see Liver bird. ...
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. ...
For other uses, see Skin (disambiguation). ...
This article is about female reproductive anatomy. ...
This article is about the urinary bladder. ...
In anatomy, a viscus (plural viscera) is an internal organ of an animal, in particular an internal organ of the thorax or abdomen. ...
[edit] 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 do the vegetative, vital functions, like photosynthesis), while the reproductive are essential in the reproduction. But, if there is asexual vegetative reproduction, the vegetative organs are those which create the new generation of plants; therefore usually creating a clonal colony.Asexual reproduction is usually done by single celled organisms. The leaf is the primary site of photosynthesis in plants. ...
Close-up of an Echinopsis spachiana flower, showing both carpels and stamen, making it a complete flower. ...
It has been suggested that Parthenogenesis be merged into this article or section. ...
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. ...
[edit] Organ systems -
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 the skeletal system and the digestive system. The Human Nervous System. ...
Major endocrine glands. ...
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 biological system of an organism that allows it to move. ...
Skeleton is also a winter sport: see skeleton (sport). ...
what was here was sick and improperly spelled. ...
[edit] List of major human organ systems There are typically considered to be eleven major organ systems of the human body. 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 biological system of an organism 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 Human Nervous System. ...
Major endocrine glands. ...
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. ...
The Respiratory System Among four-legged animals, the respiratory system generally includes tubes, such as the bronchi, used to carry air to the lungs, where gas exchange takes place. ...
The reproductive system is the ensembles and interactions of organs and/or substances within an organism that strictly pertain to reproduction. ...
In zootomy, the integumentary system is the external covering of the body, comprised of the skin, hair, feathers, scales, nails, sweat glands and their products (sweat and mucus). ...
The human lymphatic system 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 is the property of either an open system or a closed system, especially a living organism, which regulates its internal environment so as to maintain a stable, constant condition. ...
An electrolyte is a substance containing free ions that behaves as an electrically conductive medium. ...
[edit] Organs of the human body by region
[edit] Head and neck The human brain In animals, the brain (enkephalos) (Greek for in the skull), is the control center of the central nervous system, responsible for behavior. ...
For other uses, see Face (disambiguation). ...
For an alternative meaning, see ear (botany). ...
In anatomy, the orbit is the cavity or socket of the skull in which the eye and its appendages are situated. ...
For other uses, see Eye (disambiguation). ...
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. ...
A diagram of a thoracic vertebra. ...
The Spinal cord nested in the vertebral column. ...
[edit] 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. ...
For the bird, see Liver bird. ...
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. ...
The kidneys are the organs that filter wastes (such as urea) from the blood and excrete them, along with water, as urine. ...
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. ...
For other uses, see Skin (disambiguation). ...
The gallbladder (or cholecyst) is a pear-shaped organ that stores bile (or gall) until the body needs it for digestion. ...
[edit] 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 external genital organs of the female are collectively known as the vulva (plural vulvae or vulvas)[1]. In common speech, the term vagina is often used improperly to refer to the vulva or female genitals generally, even though, strictly speaking, the vagina is a specific internal structure, whereas the...
The clitoris is a sexual organ that is present in biologically 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. ...
[edit] Upper limbs/Lower limbs For other uses of Muscles, see Muscles (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). ...
In human anatomy, the wrist is the flexible and narrower connection between the forearm and the palm. ...
Elbow redirects here. ...
This article is about the body part. ...
Bones of the Hip In anatomy, the hip is the bony projection of the femur, known as the greater trochanter, and the overlying muscle and fat. ...
For other uses, see Knee (disambiguation). ...
For a review of anatomical terms, see Anatomical position and Anatomical terms of location. ...
[edit] See also |
Feeds |
Contact