Sea star - Reproduction. Most starfish reproduce in a method similar to the sponge. The starfish gather in a group (using environmental signals to coordinate the timing), metamorphose into juvenile sea stars and can begin living on the ocean floor. Sea stars are developmentally (embryologically) known as deuterostomes. Since echinoderms and chordates share this same embryological pattern, they are thought to be closely related. Nevertheless, as these creatures are invertebrates and not actually fish, most marine biologists are pushing to completely replace the term starfish with sea star. < ...

See also:

Sea star, Sea star - Distribution, Sea star - External Anatomy, Sea star - Internal Anatomy, Sea star - Digestion and excretion, Sea star - Nervous System, Sea star - Circulation and respiration, Sea star - Behaviour, Sea star - Reproduction, Sea star - Locomotion, Sea star - Regeneration, Sea star - Geological history

Read more here: » Sea star: Encyclopedia II - Sea star - Behaviour

See also:

Sea star, Sea star - Distribution, Sea star - External Anatomy, Sea star - Internal Anatomy, Sea star - Digestion and excretion, Sea star - Nervous System, Sea star - Circulation and respiration, Sea star - Behaviour, Sea star - Reproduction, Sea star - Locomotion, Sea star - Regeneration, Sea star - Geological history

Read more here: » Sea star: Encyclopedia II - Sea star - Behaviour

The body cavity also contains the water vascular system that operates the tube feet, and the hemal system. Hemal channels form rings around the mouth (the oral hemal ring), closer to the top of the starfish and around the digestive system (the gastric hemal ring). The axial sinus, a portion of the body cavity, connects the three rings. Each ray also has hemal channels running next to the gonads. < ...

See also:

Sea star, Sea star - Distribution, Sea star - External Anatomy, Sea star - Internal Anatomy, Sea star - Digestion and excretion, Sea star - Nervous System, Sea star - Circulation and respiration, Sea star - Behaviour, Sea star - Reproduction, Sea star - Locomotion, Sea star - Regeneration, Sea star - Geological history

Read more here: » Sea star: Encyclopedia II - Sea star - Internal Anatomy

The word circulation can mean the following: The transport of blood through the circulatory system. Movement of gas or fluid through a physical circuit, such as air through a ventilated building. See also Atmospheric circulation. An imaginary circuit, such as money through the economy. The readership of a periodical. In fluid dynamics, circulation is the line integral of fluid velocity around a closed curve. In Graph theory, the circulation problem is a generalisation of networ

Read more here: » Circulation: Encyclopedia - Circulation

Atmospheric circulation is the large-scale movement of air, and the means (together with the ocean circulation, which is smaller [1]) by which heat is distributed on the surface of the Earth. The large-scale structure of the atmospheric circulation varies from year to year but the basic structure remains fairly constant. However, individual weather systems - midlatitude depressions, or tropical convective cells - occur "randomly", and it is accepted that weather cannot be predicted beyond a fairly short limit: perhaps a month i ...

Including:

Atmospheric circulation - Latitudinal circulation features
Atmospheric circulation - Hadley cell Atmospheric circulation - Polar cell Atmospheric circulation - Ferrel cell
Atmospheric circulation - Longitudinal circulation features
Atmospheric circulation - Walker circulation

Read more here: » Atmospheric circulation: Encyclopedia - Atmospheric circulation

Aquatic respiration refers to the process whereby an aquatic animal obtains oxygen from the surrounding water. The level of oxygen in water is low, and can be very low. Very small organisms can obtain sufficient oxygen through the skin (e.g. flatworms) but larger organisms must have special structures, such as gills, and must have ways of increasing water flow over those structures. Fish have developed gills for respiration which have: large surface area High blood flow small/short diffusio ...

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Ataxic respiration is an abnormal pattern of breathing characterized by complete irregularity of breathing, with irregular pauses and increasing periods of apnea. As the breathing pattern deteriorates, it merges with agonal respirations. It is caused by damage to the medulla oblongata due to strokes or trauma. It generally indicates a poor prognosis, and usually progress to complete apnea. The term is sometimes used interchangeably with Biot's Respirations, but technically, Biot's respirations refers to groups of similar ...

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Biot's respirations, sometimes also called cluster respiration, is an abnormal pattern of breathing characterized by groups of quick, shallow inspirations followed by regular or irregular periods of apnea. It is distinguished from ataxic respiration by having more regularity and similar-sized inspirations, whereas ataxic respirations are characterized by completely irregular breaths and pauses. As the breathing pattern deteriorates, it merges with ataxic respirations. It is caused by damage to the medulla oblongata due to strokes or trauma or by pressure on the medulla due to uncal or tento ...

Read more here: » Biot's respiration: Encyclopedia - Biot's respiration

Cellular respiration is the process in which the chemical bonds of energy-rich molecules such as glucose are converted into energy usable for life processes. Oxidation of organic material—in a bonfire, for example—is an exothermic reaction that releases a large amount of energy rather quickly. The equation for the oxidation of glucose is: C6H12O6 + 6O2 → 6CO2 + 6HIncluding:

Cellular respiration - Aerobic respiration
Cellular respiration - Glycolysis Cellular respiration - Oxidative decarboxylation Cellular respiration - Krebs cycle/Citric Acid cycle Cellular respiration - Oxidative phosphorylation
Cellular respiration - Theoretical yields Cellular respiration - Anaerobic respiration

Read more here: » Cellular respiration: Encyclopedia - Cellular respiration

Agonal respiration is an abnormal pattern of breathing characterized by shallow, slow (3-4 per minute), irregular inspirations followed by irregular pauses. They may also be characterized as gasping, labored breathing, accompanied by strange vocalizations and myoclonus. Agonal breathing is an extremely serious medical sign requiring immediate medical attention, as the condition generally progresses to complete apnea and heralds death. The term is sometimes (inaccurately) used to refer to labored, gasping breathing patterns acco ...

Read more here: » Agonal respiration: Encyclopedia - Agonal respiration

Apneustic respiration is an abnormal pattern of breathing characterized by deep, gasping inspiration with a pause at full inspiration followed by a brief, insufficient release. It is caused by damage to the pons or upper medulla caused by strokes or trauma. It is an ominous sign, with a generally poor prognosis. Accompanying signs and symptoms may include decerebrate or decorticate posturing; fixed, dilated pupils; coma or profound stupor; quadriparesis; absent corneal reflex; absent doll's eye sign; negat ...

Read more here: » Apneustic respirations: Encyclopedia - Apneustic respirations

Control of respiration refers to the physiological mechanisms involved in the control of respiration (physiology). The most important function of breathing is gas exchange (of oxygen and carbon dioxide). Thus the control of respiration is centred primarily on how well this is achieved by the lungs. Control of respiration - Control Unit. The control unit of respiration consists of a processor (the breathing centre in the brain) which integrates inputs (emotional, chemical and physical stimuli) ...

Including:

Control of respiration - Control Unit Control of respiration - Ventilatory Pattern Control of respiration - Determinants of Ventilatory Rate

Read more here: » Control of respiration: Encyclopedia - Control of respiration

Anaerobic respiration refers to the oxidation of molecules in the absence of oxygen to produce energy. These processes require another electron acceptor to replace oxygen. Anaerobic respiration is often used interchangeably with fermentation, especially when the glycolytic pathway exists in the cell. However, certain anaerobic prokaryotes generate all of their ATP using an electron transport system and ATP synthase. Anaerobic respiration - When glycolysis is used. Oxygen is not necessary for glycoly ...

Including:

Anaerobic respiration - When glycolysis is used
Anaerobic respiration - Fermentation in other organisms
Anaerobic respiration - When ATP synthase is used

Read more here: » Anaerobic respiration: Encyclopedia - Anaerobic respiration

Artificial respiration is a technique for providing air for a person who is not breathing on their own but whose heart is still beating. The provider breathes into the other person's lungs, preferably with the assistance of a barrier device. Artificial respiration is part of performing cardiopulmonary resuscitation (CPR) but is also performed separately, especially in near-drowning and similar situation ...

Including:

Artificial respiration - Insufflations Artificial respiration - Oxygen Artificial respiration - History

Read more here: » Artificial respiration: Encyclopedia - Artificial respiration

Cheyne-Stokes respiration is an abnormal pattern of breathing characterized by periods of breathing with gradually increasing and decreasing tidal volume interspersed with periods of apnea. In cases of increasing intracranial pressure, it is often the first abnormal breathing pattern to appear. The condition was named after John Cheyne and William Stokes, the physicians who first classified it. This is caused by the failure of the respiratory center in the brain to compensate quickly f ...

Read more here: » Cheyne-Stokes respiration: Encyclopedia - Cheyne-Stokes respiration

In fluid dynamics, circulation is the path integral around a closed curve of the fluid velocity. Circulation is normally denoted Γ. If is the fluid velocity and the closed curve is denoted C: For a body in an inviscid flow field, lift is equal to the product of the circulation about the body, the air density, and the velocity. Circulation is often used in computational fluid dynamics as an intermediate variable to calculate forces on an airfoil or other body. The circulation around an airfoil can be finite, ...

Read more here: » Circulation fluid dynamics: Encyclopedia - Circulation fluid dynamics

The coronary circulation consists of the blood vessels that supply blood to, and remove blood from, the heart. The vessels that supply blood high in oxygen to the heart are known as coronary arteries. The vessels that remove the deoxygenated blood from the heart are known as cardiac veins. The coronary arteries that run on the surface of the heart are called epicardial coronary arteries. These arteries, when healthy, are capable of autoregulation to maintain coronary blood flow at levels appropriate to the needs of the heart mu ...

Including:

Coronary circulation - Coronary anatomy
Coronary circulation - Left coronary artery Coronary circulation - Right coronary artery Coronary circulation - Coronary artery dominance
Coronary circulation - Blood supply of the papillary muscles Coronary circulation - Coronary flow

Read more here: » Coronary circulation: Encyclopedia - Coronary circulation

A sea is a large expanse of saline water connected with an ocean, or a large, usually saline, lake that lacks a natural outlet such as the Caspian Sea and the Dead Sea. The Sea of Galilee is a small freshwater lake with a natural outlet, but the term was applied to it anyway. The term is used colloquially as synonymous with ocean, as in the tropical sea or down to the sea shore, or even sea water referring to water of the ocean. Large lakes are sometimes referred t ...

Including:

Sea - List of seas divided by ocean
Sea - Pacific Ocean Sea - Atlantic Ocean Sea - Indian Ocean Sea - Arctic Ocean Sea - Southern Ocean Sea - Landlocked seas
Sea - Extraterrestrial seas Sea - Science

Read more here: » Sea: Encyclopedia - Sea

Volcanoes of the Deep Sea (2003) directed by Stephen Low of Montreal, Canada. Low has also directed Titanica, Beavers, Super Speedway and most recently Fighter Pilot: Operation Red Flag starring Captain John Stratton, Major Robert Novotny and Major Sam Morgan, all 3 are US Air Force pilots. Other related archives

Read more here: » Volcanoes of the Deep Sea: Encyclopedia - Volcanoes of the Deep Sea

The Baltic Sea is located in Northern Europe, from 53 deg. to 66 deg. north latitude and from 20 deg. to 26 deg. east longitude. It is bounded by the Scandinavian Peninsula, the mainlands of Northern Europe, Eastern Europe, Central Europe, and the Danish islands. It drains into the Kattegat by way of the Öresund, the Great Belt and the Little Belt. Kattegat then continues in the Skagerrak into the North Sea and the Atlantic Ocean. The Baltic Sea is linked to the White Sea by the White Sea Canal and directly to the North Sea by the Ki ...

Including:

Baltic Sea - Name
Baltic Sea - Etymology Baltic Sea - The name in other languages
Baltic Sea - Geophysical data
Baltic Sea - Dimensions Baltic Sea - Icing in winter Baltic Sea - Hydrography Baltic Sea - Salinity Baltic Sea - Regional emergence
Baltic Sea - Geographic data
Baltic Sea - Subdivisions Baltic Sea - Land use Baltic Sea - Demographics
Baltic Sea - Geologic history Baltic Sea - Prehistory Baltic Sea - History Baltic Sea - Biology Baltic Sea - Economy Baltic Sea - Countries Baltic Sea - Islands and Archipelagoes Baltic Sea - Cities

Read more here: » Baltic Sea: Encyclopedia - Baltic Sea