Their main asset is an abundance of unsaturated fatty acids, so necessary for maintaining the good health of the circulatory system.

Their principal body cavity is the hemocoel of an open circulatory system.

Their ears are thin and the blood vessels are close to the skin, and flapping their ears to increase the airflow over them causes the blood to cool, which reduces their core body temperature when the blood moves through the rest of the circulatory system.

Their circulatory systems are divided into two types: a three-chambered heart, with two atria and one ventricle, or a four-chambered heart, with two atria and two ventricles.

Their average heart rate is 300 to 400 beats per minute, with a respiratory rate of around 100 per minute.

Their photosynthetic electron transport shares the same compartment as the components of respiratory electron transport.

Their plasma membrane contains only components of the respiratory chain, while the thylakoid membrane hosts both respiratory and photosynthetic electron transport.

Their internal nostrils open in the back of their throat, where a special part of the tongue called the " palatal valve " closes off their respiratory system when they are underwater.

Their understanding of an organism's metabolic / respiratory chain is based entirely on blood-flow considerations.

Their initial findings suggested that lesions in the medial pontine tegmentum leads to a disruption of cortical inhibitory effects of medullar respiratory center.

Their use in the first trimester is also associated with a risk of major congenital malformations, particularly affecting the cardiovascular and central nervous systems.

Their operating systems, called MCP ( Master Control Program — the name later borrowed by the screenwriters for Tron ), were programmed in ESPOL ( Executive Systems Programming Oriented Language, a minor extension of ALGOL ), and later in NEWP ( with further extensions to ALGOL ) almost a decade before Unix.

Their applications are seen in more basic economic systems as well.

Their systems used alternating current exclusively and included those comprising both arc and incandescent lamps, along with generators and other equipment.

Their digestive systems allow them to subsist on diets of lower nutritional quality than that necessary for other herbivores.

Their ideas were adopted, and fuzzy systems were used to control accelerating, braking, and stopping when the line opened in 1987.

Their ruminant-like digestive systems have enabled these leaf-eaters to occupy niches that are inaccessible to other primates.

Their built-in operating systems were designed in an era when floppy disk drives were very expensive and not expected to be used by most users, so the standard storage device on most was a tape drive using standard compact cassettes.

Their efforts, particularly as critics of the less technically profound work of the TRUSIX Access Control List ( ACL ) Subcommittee, survive in the IEEE POSIX 1003. 6 " security extensions for portable operating systems environments " specification.

Their TV systems transmitted pictures of the spacecraft footpad and surrounding lunar terrain and surface materials.

Their plans involved moving to become a charitable trust, in charge of the current canal systems in addition to the goal of acquiring other waterways, such as those operated by the Environment Agency.

Their use is becoming increasingly more common as it simplifies the interconnection between newer ISUP / SS7-based host office switches and the many older PSAP systems.

These languages all have a shared characteristic: Their writing systems all completely or partly use Chinese characters — Hànzì in Chinese, kanji in Japanese, hanja in Korean, and Hán tự in Vietnamese.

Their music was, broadly, repetitive minimalism, often of great technical difficulty ( Hobbs's Working Notes ( 1969 ) for four toy pianos ), great dynamic power ( Shrapnel's 4 Toy Pianos ( 1971 )), were used in various combinations with reed organs, and used compositional techniques that were either specific to British experimentalism ( such as systems music, invented by John White ), or borrowed from other disciplines ( such as Alec Hill's use of change ringing systems ).

Their software included operating systems ( Flex, mini-FLEX, FLEX09, and UniFLEX ) and various languages ( several BASIC variants, FORTRAN, Pascal, C, assemblers, etc.

Their skepticism rests on the fact that there are many physical asymmetries between natural, organic systems and artificially constructed ( e. g., computer ) systems, and it seems reasonable to think these differences would be relevant to the generation of conscious states.

Their orientations vary ( though slowly, e. g. due to precession ), and there is an infinity of such coordinate systems possible.

Their business plan called for ultra-reliable systems that never had outages and never lost or corrupted data.

Their earliest systems supported multiple windows, but there was no obvious way to indicate boundaries between them ( such as window borders, title bars, etc.

Their focus of interest in that book was homogeneous systems ( page 1 ), which they termed ' assemblies '.

McCulloch and Pitts showed how neural systems could implement first-order logic: Their classic paper " A Logical Calculus of Ideas Immanent in Nervous Activity " ( 1943 ) is important in this development here.

Their development, diffusion and long range changes are determined by the great river systems.

Their consequences are irrelevant -- or there are no consequences at all.

Defoe then commented, `` If they Could Draw that young Gentleman into Their Measures They would show themselves quickly, for they are not asham'd to Say They want only a head to Make a beginning ''.

Their expressed standards concerning sex roles, desirable age for marriage, characteristics of an ideal mate, number of children desired are congruent with the values and stereotypes of the preceding generation -- minus compulsive rebellion.

Their commitments are, for the most part, couched in a familiar idiom.

Their conclusions concerning the untrustworthiness of the West Saxon annals, the confused chronology of Bede, the unreliability of the early positions of the Anglo-Saxon genealogies and the mythological elements contained in Nennius are now mostly accepted.

Their privations are almost beyond endurance.

Their national leader, Robert Bolivar DePugh of Norborne, Mo., says the Minutemen believe that guerrilla tactics are best suited to defeat the Red onslaught.

Their United States tax returns are due April 16, 1962.

Their locations in all parts of the United States, and their locations in the several kinds of educational and research institutions that are the principal homes of our intellectual and artistic strengths also are factors in the Trustees' minds.

Their friends and ours are welcome to share the pool, but on our terms and at our times.

Their experience is quite in contrast with that of children of upper- and upper-middle-class native-born parents, who are more likely to regard education as good for its own sake and to discount the vocational emphases in the curriculum.

Their effects are only superficially startling.

Their names are Mantle and Maris, their team is the Yankees, and their threat is real.

Their autumn tints are all fairly low keyed compared with the fiery stabs of crimson, gold, purple, bronze, blue and vermilion that flame up in North America.

Their metabolic rate is low and as a result, their food and energy requirements are limited.

Their ribs are usually short and may be fused to the vertebrae.

Their skulls are mostly broad and short and are often incompletely ossified.

Their lungs are functional early but the larvae don't make as much use of them as do tadpoles.

Their gills are never covered by gill sacs and are reabsorbed just before the animals leave the water.

Their leaves are of variable size and alternately arranged, or alternate with the upper leaves becoming nearly opposite.

Their beliefs and behavior are difficult to decipher from physical materials, and their languages remain unknown as they had no known writing system.