Annelid
Accounts of the use of leeches for the medically dubious practise of blood-letting have come from China around 30 AD, India around 200 AD, ancient Rome around 50 AD and later throughout Europe. In the 19th century medical demand for leeches was so high that some areas' stocks were exhausted and other regions imposed restrictions or bans on exports, and Hirudo medicinalis is treated as an endangered species by both IUCN and CITES. More recently leeches have been used to assist in microsurgery, and their saliva has provided anti-inflammatory compounds and several important anticoagulants, one of which also prevents tumors from spreading.
Annelid
Earthworms are Oligochaetes that support terrestrial food chains both as prey and in some regions are important in aeration and enriching of soil. The burrowing of marine polychaetes, which may constitute up to a third of all species in near-shore environments, encourages the development of ecosystems by enabling water and oxygen to penetrate the sea floor. In addition to improving soil fertility, annelids serve humans as food and as bait. Scientists observe annelids to monitor the quality of marine and fresh water. Although blood-letting is no longer in favor with doctors, some leech species are regarded as endangered species because they have been over-harvested for this purpose in the last few centuries. Ragworms' jaws are now being studied by engineers as they offer an exceptional combination of lightness and strength.
National debt of the United States
As of July 31, 2018, debt held by the public was $15.6 trillion and intragovernmental holdings were $5.7 trillion, for a total or ``National Debt ''of $21.4 trillion. Debt held by the public was approximately 77% of GDP in 2017, ranked 43rd highest out of 207 countries. The Congressional Budget Office forecast in April 2018 that the ratio will rise to nearly 100% by 2028, perhaps higher if current policies are extended beyond their scheduled expiration date. As of December 2017, $6.3 trillion or approximately 45% of the debt held by the public was owned by foreign investors, the largest being China (about $1.18 trillion) then Japan (about $1.06 trillion).
Finances of The Church of Jesus Christ of Latter-day Saints
By the time Lorenzo Snow became church president in 1898, the church was $2.3 million in debt. Snow reemphasized the payment of tithing (giving 10% of one's income to the church) and by 1907 the church was completely out of debt and since then has not used debt to fund its operations, even for capital projects. An early pioneer venture of the LDS Church was ZCMI which lasted from 1868 to divesting ZCMI Center Mall in 2007.
Debtor-in-possession financing
Debtor-in-possession financing or DIP financing is a special form of financing provided for companies in financial distress, typically during restructuring under corporate bankruptcy law (such as Chapter 11 bankruptcy in the US or CCAA in Canada). Usually, this debt is considered senior to all other debt, equity, and any other securities issued by a company — violating any "absolute priority rule" by placing the new financing ahead of a company's existing debts for payment.
Chordae tendineae
When the ventricles of the heart contract in ventricular systole, the increased blood pressures in both chambers push the AV valves to close simultaneously, preventing backflow of blood into the atria. Since the blood pressure in atria is much lower than that in the ventricles, the flaps attempt to evert to the low pressure regions. The chordae tendineae prevent the eversion, prolapse, by becoming tense thus pulling the flaps, holding them in closed position.
Cardiac cycle
The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the beginning of the next. It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole (die - ASS - toe - lee), followed by a period of robust contraction and pumping of blood, dubbed systole (SIS - toe - lee). After emptying, the heart immediately relaxes and expands to receive another influx of blood returning from the lungs and other systems of the body -- before again contracting to pump blood to the lungs and those systems. A normally performing heart must be fully expanded before it can efficiently pump again. Assuming a healthy heart and a typical rate of 70 to 75 beats per minute, each cardiac cycle, or heartbeat, takes about 0.8 second to complete the cycle.
Christ Cathedral (Garden Grove, California)
Beginning in 2010, creditors of Crystal Cathedral Ministries filed lawsuits to collect money due to them for providing goods, services and broadcasting The Hour of Power weekly TV show. A board member said that the total debt was $55 million.
Leach Railroad Station, Kentucky
Leach Railroad Station, is an unincorporated community located 3 miles south of Catlettsburg in Boyd County, Kentucky. It was first established in approximately 1882 as a freight and passenger loading facility for the Chatteroi railroad (later Chesapeake and Ohio Railway). The former community of Leech Station is now mostly owned by Marathon Oil, which operates one of its seven oil refineries there. Marathon bought the large refinery at Leech Station from Ashland, Inc. in 1999. In 2000, Marathon took over ownership of old U.S. 23 and then purchased the remaining residential property located at Leech Station.
Hemostasis
Hemostasis occurs when blood is present outside of the body or blood vessels. It is the instinctive response for the body to stop bleeding and loss of blood. During hemostasis three steps occur in a rapid sequence. Vascular spasm is the first response as the blood vessels constrict to allow less blood to be lost. In the second step, platelet plug formation, platelets stick together to form a temporary seal to cover the break in the vessel wall. The third and last step is called coagulation or blood clotting. Coagulation reinforces the platelet plug with fibrin threads that act as a ``molecular glue ''. Platelets are a large factor in the hemostatic process. They allow for the creation of the`` platelet plug'' that forms almost directly after a blood vessel has been ruptured. Within seconds of a blood vessel's epithelial wall being disrupted platelets begin to adhere to the sub-endothelium surface. It takes approximately sixty seconds until the first fibrin strands begin to intersperse among the wound. After several minutes the platelet plug is completely formed by fibrin. Hemostasis is maintained in the body via three mechanisms:
Palm Island, Queensland
Palm Island is often termed a classic "tropical paradise" given its natural endowments, but it has had a troubled history since the European settlement of Australia. For much of the twentieth century it was used by the Queensland Government as a settlement for Aboriginals considered guilty of such infractions as being "disruptive", being pregnant to a white man or being born with mixed blood.
Motobdella montezuma
Motobdella montezuma is a species of leech which is only found in Montezuma Well, central Arizona, United States. It is a nocturnal pelagic predator that feeds almost exclusively on the endemic amphipod "Hyalella montezuma", which it detects using passive sonar and swallows whole.
European Central Bank
There is also a widespread view[vague][who?] that giving much more financial support to continuously cover the debt crisis or allow even higher budget deficits or debt levels would discourage the crisis states to implement necessary reforms to regain their competitiveness.[citation needed] There has also been a reluctance[citation needed] of financially stable eurozone states like Germany[citation needed] to further circumvent the no-bailout clause in the EU contracts and to generally take on the burden of financing or guaranteeing the debts of financially unstable or defaulting eurozone countries.[citation needed]
Red blood cell
Adult humans have roughly 20 -- 30 trillion red blood cells at any given time, constituting approximately 70% of all cells by number. Women have about 4 -- 5 million red blood cells per microliter (cubic millimeter) of blood and men about 5 -- 6 million; people living at high altitudes with low oxygen tension will have more. Red blood cells are thus much more common than the other blood particles: there are about 4,000 -- 11,000 white blood cells and about 150,000 -- 400,000 platelets per microliter.
Sumer
Periodically "clean slate" decrees were signed by rulers which cancelled all the rural (but not commercial) debt and allowed bondservants to return to their homes. Customarily rulers did it at the beginning of the first full year of their reign, but they could also be proclaimed at times of military conflict or crop failure. The first known ones were made by Enmetena and Urukagina of Lagash in 2400-2350 BC. According to Hudson, the purpose of these decrees was to prevent debts mounting to a degree that they threatened fighting force which could happen if peasants lost the subsistence land or became bondservants due to the inability to repay the debt.
Whales and Leeches
Whales and Leeches is the third album by the American stoner metal band Red Fang, released in 2013 on Relapse Records.
Reye syndrome
The cause of Reye syndrome is unknown. It usually begins shortly after recovery from a viral infection, such as influenza or chickenpox. About 90% of cases are associated with aspirin (salicylate) use in children. Inborn errors of metabolism are also a risk factor. Changes on blood tests may include a high blood ammonia level, low blood sugar level, and prolonged prothrombin time. Often the liver is enlarged.
Let It Be
``Let It Be ''is a song by the English rock band the Beatles, released in March 1970 as a single, and (in an alternate mix) as the title track of their album Let It Be. At the time, it had the highest debut on the Billboard Hot 100, beginning its chart run at number 6. It was written and sung by Paul McCartney. It was their final single before McCartney announced his departure from the band. Both the Let It Be album and the US single`` The Long and Winding Road'' were released after McCartney's announced departure from and the subsequent break - up of the group.
Let It Be
``Let It Be ''is a song by the English rock band the Beatles, released in March 1970 as a single, and (in an alternate mix) as the title track of their album Let It Be. At the time, it had the highest debut on the Billboard Hot 100, beginning its chart run at number 6. It was written and sung by Paul McCartney. It was their final single before McCartney announced his departure from the band. Both the Let It Be album and the US single`` The Long and Winding Road'' were released after McCartney's announced departure from and the subsequent break - up of the group. The alternate mix on their album Let It Be features an additional guitar solo and some minor differences in the orchestral sections.

Question: How much debt do we have with the country where leeches began being used for blood-letting?
Answer: about $1.18 trillion